The Fox Customer Technology Center

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2 The Fox Customer Technology Center Your Resource for Custom Crystal and Oscillator Development At Fox, we pride ourselves on offering the world's broadest range of standard, stocked, off-the-shelf crystals and oscillators. We also pride ourselves on knowing what the market needs. And we understand that, more and more, your applications may require a frequency control device with characteristics or capabilities that are not met by our standard offerings. That's why we've developed the Fox Customer Technology Center (CTC) as a resource for your special needs. Our new CTC is designed specifically to deliver cost-effective, fast-turn solutions to highly application-specific requirements for crystals, oscillators, TCXOs, VCXOs and OCXOs. Application Specific Crystals, Oscillators, TCXOs, VCXOs and OCXOs Cost-Effective Development with Rapid Turnaround Engineered Solutions from Minor Modifications to Full Custom Dedicated Engineering Support Team for Your Application Advanced Control Expertise from the World Leader tell you that, too and perhaps suggest another solution to the problem. Our application engineers are skilled at creating just the right solutions. If your application warrants it, we'll send a FOX FAE to your site to discuss the situation with you in person. The Fox CTC has already proven to be a tremendous success: several innovative products have already been developed by the CTC, including a 77 MHz TCXO, which was designed, developed, produced, tested and shipped in a matter of days rather than the four months quoted by our competitors!! From tweaks to full custom Engineered solutions for your application Your custom frequency control need may be for a slight modification to anexisting product a significant variation of a current product or an entirely new concept never before offered, but just what you need for your unique application. Whatever it takes, the FOX CTC is prepared to tackle it. We'll evaluate your need and provide a candid response on what it will take to meet that need. And, if we simply can't do it, we'll At the heart of the Fox CTC is a powerful, focused engineering capability, representing an integration and expansion of our design engineering and customer support resources, and a significantly expanded Field Application Engineering staff. The CTC specializes in the development of TCXOs, VCXOs and OCXOs over a wide range of frequencies and output structures not previously addressed. The CTC also employs patented technology for oscillator and RF applications up to.4 GHz, opening up new possibilities for highly engineered telecom and fiber optic products. The CTC is supported by a newly formed Design Central, comprising the Fox's DEN (Design Engineering Network) and the Fox Customer Application Team (CAT). The latter is a dedicated, multi-discipline team consisting of the primary customer service person, technical supervisor, design engineer and marketing person serving that particular customer. On the production side, the CTC has extensive manufacturing tools at its disposal, including an expanded range of thick and thin film, laser, pick and place, wire bonding and wafer handling processes. Our CTC is your resource! No matter how unique your frequency control need may be, chances are high that it can be met at the Fox Customer Technology Center. Call us with your problem or visit our CTC website at foxonline.com/ctc and we'll provide the solution!

3 MISSION STATEMENT Fox Electronics' mission is to provide a broad line of frequency control products to worldwide electronics markets. Combining the disciplines of engineering, manufacturing, quality assurance, operations, information systems and marketing, Fox strives to provide its customers with superior quality, excellent service, leading edge products and knowledgeable application support. FOX QUALITY PHILOSOPHY Customer satisfaction begins with superior product quality and excellent service. In order to satisfy our customers, our quality philosophy is built on the foundation of continuous improvement in all facets of our business. Our quality assurance program is based on quality and engineering planning, employee training, supplier relationships, and statistical process controls. We strive towards zero defects by prevention methods instead of detection methods. Regular updates and New Product Announcements are made on our web site. Visit Fox Electronics has a staff of application specialists ready to help you. Contact our hotline foxonline.com

4 CATALOG CONTENTS The FOX Mission... Contents... - FOX SERVICES Distributor Briefing... 4 Standard Microprocessor Crystals... 5 Standard Watch Crystals... 6 Standard Oscillators... 7 Standard TCXOs and VCXOs... 8 JITO- & FASTFOX Product Lines... 9 QUARTZ CRYSTALS Quartz Crystal Selection Guide...0 FX6B... x.6mm Ceramic SMD... FX5B.... x.5mm Ceramic SMD... FX5 Series... 5 x.mm Ceramic SMD... FQA... 6 x.5mm Ceramic Resin Sealed SMD...4 FMB... 6 x.5mm Ceramic Seam Sealed SMD...5 FE x 5mm Ceramic Resin Sealed SMD...6 FD x 5mm Ceramic Seam Sealed SMD...7 FC....8 x 5.5mm Ceramic Resin Sealed SMD...8 FPX....9 x 5mm Plastic Encased SMD...9 HC49SD.... x 4.8mm Resistance Weld SMD...0 HC49S.... x 4.6mm Resistance Weld Thru-Hole... HC80U x 8.mm Resistance Weld Thru-Hole... HC49U... x.5mm Resistance Weld Thru-Hole... WATCH CRYSTALS FSX... 7 x.5mm SMD Tuning Fork...4 FSR x.7mm SMD Tuning Fork (Standard)...5 NC Series....5 x 5mm / x 6mm / x 8mm Thru-Hole Tuning Fork...6 Crystal Part Description Guide...7 SMD Crystals Tape And Reel Specifications...8 CLOCK OSCILLATORS Clock Oscillator Selection Guide...9 Clock Oscillator General Characteristics...0 Radio Crystal Oscillators (rfxos)...- Just-In-Time Oscillators (JITO -) F0 Series....V x.5mm HCMOS Ceramic SMD with Standby... F50L Series....8V 5 x.mm HCMOS Ceramic SMD with Standby...4 F5L Series....5V 5 x.mm HCMOS Ceramic SMD with Standby...4 F50L Series....V 5 x.mm HCMOS Ceramic SMD with Standby...4 F400 Series....V 6 x.5mm HCMOS Ceramic SMD with Standby...44 F4500 Series....8V 7.5 x 5mm HCMOS Ceramic SMD with Standby...45 F40 Series....5V 7.5 x 5mm HCMOS Ceramic SMD with Standby...46 Continuted on page...

5 CLOCK OSCILLATORS (Continued...) F400 Series...85V 7.5 x 5mm HCMOS Ceramic SMD with Standby...47 F0 Series...V 7.5 x 5mm HCMOS Ceramic SMD with Standby F45 Series...5.0V 7.5 x 5mm HCMOS/TTL Ceramic SMD with Tri-State E/D...50 F4600 Series....V 7.5 x 5mm LV-PECL Ceramic SMD with Comp. Output...5 RFX00....V 7.5 x 5mm LV-PECL rfxo Ceramic SMD with Comp. Output...5 FSO Series....V/5.0V 4 x 9.8mm HCMOS/TTL Plastic SMD withtri-state E/D...5 KFO Series....V/5.0V.8 x 9.8mm HCMOS/TTL Plastic SMD withtri-state E/D...54 F5C-E / H5C-E....V 4-Pin/8-Pin DIP HCMOS/TTL Thru-Hole w/ Tri-State E/D...55 F5C-E / H5C-E V 4-Pin/8-Pin DIP HCMOS Thru-Hole with Tri-State E/D...56 F00E V 4-Pin DIP TTL Thru-Hole...57 F5L-4G V 4-Pin DIP PECL Thru-Hole...58 Oscillator Part Description Guide...59 Oscillator Tape and Reel Specifications...60 VOLTAGE CONTROLLED CRYSTAL OSCILLATORS (VCXO) VCXO, TCXO, and OCXO Selection Guide...6 FVS5AXT....V 5.0 x.mm HCMOS Ceramic SMD...6 VCS5AXT....V 7.5 x 5mm HCMOS Ceramic SMD (Standard)...6 VCSAXT Series....V 7.5 x 5mm HCMOS Ceramic SMD...64 RFV00....V 7.5 x 5mm LV-PECL RF-VCXO Ceramic SMD with Comp. Output...65 VCXO-D....V 4-Pin DIP HCMOS Thru-Hole...66 VCXO-C V 4-Pin DIP HCMOS Thru-Hole...67 TEMPERATURE COMPENSATED CRYSTAL OSCILLATORS (TCXO) FOX94 Series....0V 5 x.mm Clipped-Sine Ceramic SMD...68 FOX07H....0V 7.5 x 5mm Clipped-Sine Ceramic SMD...69 FOXBE....0V 7.5 x 5mm Clipped-Sine Ceramic SMD...70 FOX80BE....0V.4 x 9.6mm Clipped-Sine FR-4 SMD...7 FOX80 Series....0V/5.0V.4 x 9.6mm Clipped-Sine FR-4 SMD...7 FOX78B V 4-Pin DIP Clipped-Sine Thru-Hole...7 FOX V 4-Pin DIP HCMOS Thru-Hole...74 OVEN CONTROLLED CRYSTAL OSCILLATORS (OCXO) OCXO General Characteristics...75 FTS50AH V 4-Pin DIP HCMOS Thru-Hole...76 FTS0AH....V 4-Pin DIP HCMOS Thru-Hole...77 VCXO and TCXO Part Description Guide...78 VCXO, TCXO, and OCXO Tape and Reel Specifications...79 CRYSTAL FILTERS Monolithic Crystal Filters...80 Standard Monolithic Crystal Filters...8 Filters Part Description Guide...8 TECHNICAL DATA Quartz Crystal Theory of Operation...8 Quartz Crystal Design Notes Oscillator Theory of Operation Frequently Asked Questions

6 DISTRIBUTOR BRIEFING The Fox Distribution Program includes all of the Fox Part Numbers identified as DISTRIBUTOR STOCKING STANDARDS plus all of our JITO- product line. Fox franchised distributors maintain inventory of the STANDARDS to assure a constant supply to customers who design these items into their products. Of course, JITO- products are not maintained in inventory as they are 'built to order and schedule' for JIT delivery. This STANDARDS PROGRAM is formalized in our distributor relationship and in our Contract Manufacturing relationships, providing maximum global flexibility to our OEM customers. Design engineers can be confident that a STANDARD oscillator or crystal will be available for future manufacturing needs. A check with the Fox website will reveal current address and phone number information for all of the authorized distributors in your area. The feature "StockCheck" on Fox's home page ( may be used to confirm distributor inventory. Fox global distributors may have regional marketing centers in certain areas of the world, easily located through the distributors' website. Global Distribution North American Distribution European Distribution Eurosource MEV Elektronik Singapore Distribution Seamax sales@seamax.com.sg Australian Distribution Clarke & Severn 4

7 STANDARD CRYSTALS Inventory Support FOX STANDARD SPECIFICATIONS PARAMETER 5 C Stability HC49U* ±0PPM HC49S/49SD ±0PPM Operating Temperature Range-0 C ~ +70 C -0 C ~ +70 C *Optional third lead, vinyl sleeves (HC49U only), and mylar spacer. ** Measurements are displayed in Millimeters. FPX -0 C ~ +70 C FE -0 C ~ +60 C All specifications subject to change without notice.. Standard Packages Lowest Pricing Fox Quality Technical Support FREQ (MHz) CL pf 0pF 0pF pf 8pF SERIES 0pF SERIES 0pF 0pF pf 0pF SERIES 0pF 0pF SERIES 0pF 0pF 0pF SERIES 0pF SERIES 0pF SERIES 0pF SERIES SERIES 0pF SERIES 0pF SERIES 0pF 0pF SERIES 0pF 0pF 0pF 0pF 0pF SERIES 0pF SERIES 0pF SERIES 0pF SERIES 0pF 0pF 0pF 0pF 0pF 0pF 0pF 0pF 0pF 8pF 0pF 0pF HC49U FOX08S FOX00S FOX0S FOX04S FOX06S FOX068S FOX068-0 FOX0A FOX0 FOX FOX04 FOX044 FOX049 FOX049-0 FOX05A FOX060 FOX060-0 FOX06 FOX06-0 FOX07 FOX07-0 FOX080 FOX080-0 FOX08 FOX08-0 FOX09 FOX098 FOX098-0 FOX00 FOX00-0 FOX FOX-0 FOX5-0 FOX0 FOX0-0 FOX8-0 FOX4-0 FOX47-0 FOX60 FOX60-0 FOX84 FOX84-0 FOX96 FOX96-0 FOX00 FOX00-0 FOX-0 FOXF-0 FOX45F-0 FOX50F-0 FOX0-0 * FOX480-0 * FOX500-0 * FOX600-0 * FOX6-0 * ESR W MAX HC49S FOXS/06S FOXS/068S FOXS/068-0 FOXS/0A FOXS/0 FOXS/ FOXS/04 FOXS/044 FOXS/049 FOXS/049-0 FOXS/07 FOXS/07-0 FOXS/080 FOXS/080-0 FOXS/08-0 FOXS/098 FOXS/098-0 FOXS/00 FOXS/00-0 FOXS/-0 FOXS/5-0 FOXS/0 FOXS/0-0 FOXS/8-0 FOXS/4-0 FOXS/47-0 FOXS/60 FOXS/60-0 FOXS/84-0 FOXS/96-0 FOXS/00 FOXS/00-0 FOXS/-0 FOXS/F-0 FOXS/45F-0 FOXS/50F-0 ESR W ESR W MAX Please Refer To Specification Sheets For Details HC49SD FOXSD/06S FOXSD/068-0 FOXSD/0 FOXSD/04 FOXSD/044 FOXSD/049-0 FOXSD/05A FOXSD/060-0 FOXSD/07-0 FOXSD/080-0 FOXSD/08-0 FOXSD/098-0 FOXSD/00-0 FOXSD/-0 FOXSD/5-0 FOXSD/0-0 FOXSD/8-0 FOXSD/4-0 FOXSD/47-0 FOXSD/60-0 FOXSD/84-0 FOXSD/96-0 FOXSD/00-0 FOXSD/-0 FOXSD/F-0 FOXSD/45F-0 FOXSD/50F-0 FOXSD/70F-0 FOXSD/0-0 * FOXSD/480-0 * FOXSD/500-0 * FOXSD/564-8 * FOXSD/600-0 * FOXSD/6-0 * ESR W MAX FPX FPX06S FPX068S FPX068-0 FPX0A FPX0 FPX049 FPX049-0 FPX07 FPX07-0 FPX080 FPX080-0 FPX08-0 FPX098-0 FPX00 FPX00-0 FPX-0 FPX5-0 FPX0 FPX0-0 FPX8-0 FPX4-0 FPX47-0 FPX60 FPX60-0 FPX84-0 FPX96-0 FPX00 FPX00-0 FPX-0 FPXF-0 FPX45F-0 FPX50F-0 FPX0-0 * FPX480-0 * FPX500-0 * FPX600-0 * FPX6-0 * ESR W MAX FE ESR W MAX FE FE FE FE FE FE FE FE00-0 FE-0 FEF-0 FE45F-0 FE50F-0 * rd Overtone. "F" suffix denotes fundamental Rev. 0/0/0 5

8 STANDARD WATCH CRYSTALS FOX STANDARD SPECIFICATIONS PARAMETER Tolerance Stability Operating Temperature Range Load Capacitance Drive Level FSR7.768 khz ±0PPM PPM/( ºC) - C ~ +85 C.5 pf.0 µw FOX STANDARD SPECIFICATIONS PARAMETER Tolerance Stability Operating Temperature Range Load Capacitance Drive Level NC6.768 khz ±0PPM PPM/( ºC) -0 C ~ +60 C.5 pf.0 µw FOX STANDARD SPECIFICATIONS PARAMETER Tolerance Stability Operating Temperature Range Load Capacitance Drive Level Rev. 05/0/0 NC8.768 khz ±0PPM PPM/( ºC) -0 C ~ +60 C.5 pf.0 µw 6

9 STANDARD OSCILLATORS DISTRIBUTOR STOCKING ITEMS Inventory Support Standard Packages Lowest Pricing Fox Quality Technical Support F00E / F5C-E H5C-E F45/F0/F5/F6 FOX STANDARD SPECIFICATIONS PARAMETER F00E Voltage 5V Stability Operating Temperature Range 0ºC ~ +70ºC Output TTL F5C-E 5V 0ºC ~ +70ºC HCMOS H5C-E 5V 0ºC ~ +70ºC HCMOS F45 5V -0ºC ~ +70ºC HCMOS F0.V -0ºC ~ +70ºC HCMOS F5/F6.V ±50 / ±5PPM -0ºC ~ +70ºC HCMOS FREQUENCY (MHz) Rev. 07/8/0 F00E F00E-00 F00E-08 F00E-00 F00E-04 F00E-068 F00E-0 F00E-060 F00E-07 F00E-080 F00E-00 F00E-5 F00E-0 F00E-4 F00E-47 F00E-60 F00E-84 F00E-00 F00E- F00E-50 F00E-0 F00E-0 F00E-480 F00E-500 F00E-6 F00E-800 F00E-000 F5C-E F5CE-080 F5CE-00 F5CE-0 F5CE-60 F5CE-00 F5CE- F5CE-50 F5CE-0 F5CE-0 H5C-E F45 F0 H5CE-00 H5CE-068 H5CE-080 H5CE-60 H5CE-00 H5CE-50 H5CE-0 H5CE-0 H5CE-500 H5CE-6 F45-08 F F45-0 F45-4 F45-60 F45-00 F45- F45-50 F45-0 F45-0 F F F45-6 F0-08 F0-068 F0-0 F0-00 F0-4 F0-60 F0-84 F0-00 F0-50 F0-0 F0- F0-0 F0-480 F0-500 F0-600 F0-666 F0-06 F5 /F6 F5-4 F5-00 F5-50 F5-0 F5-0 F6-4 F5-500 F5-666 F5-000 F5-06 F5-50 JITO- JITO- JITO- JITO- JITO- JITO- JITO- JITO- JITO- JITO- JITO- JITO- JITO- JITO- JITO- JITO- JITO- JITO- JITO- JITO- JITO- JITO- JITO- JITO- JITO- JITO- JITO- JITO- JITO- JITO- JITO- JITO- 7

10 STANDARD VCXOs & TCXOs DISTRIBUTOR STOCKING ITEMS FOX STANDARD SPECIFICATIONS PARAMETER VCS5AXT Supply Voltage.V Stability Pullability Operating Temperature Range -0 C ~ +70 C FOX80BE.0V ±.5PPM ±.0PPM -0ºC ~ +75ºC VCS5AXT (VCXO) (MHz) Part Number VCS5AXT-0496 VCS5AXT-08 VCS5AXT-8 VCS5AXT-6 VCS5AXT-70 VCS5AXT-5 VCS5AXT-447 Other voltages, stabilities, and pullabilities available on custom order. Rev. 0/0/0 FOX80BE (VCTCXO) (MHz) Part Number FOX80BE-00 FOX80BE-8 FOX80BE-44 FOX80BE-60 FOX80BE-9 FOX80BE-00 The voltage control may be disabled by applying.50 volts to pin. Trimmerless and non-vc parts available on custom order. 8

11 PRODUCT LINE FAST DELIVERY SUPERIOR QUALITY CRYSTALS AND OSCILLATORS Let FASTFOX help you with all your "Rush" Requirements -888-GET--FOX Delivery: 5 to 0 working days Quartz Crystals HC49U ~ 7 MHz fundamental 0 ~ 60 MHz rd overtone HC49SD.579 ~ 64MHz Look for the Logo Oscillators F00E 4 ~ 5 MHz F5C-E.000 ~ 50 MHz H5C-E.000 ~ 50 MHz JITO- 0. ~ 00 MHz for Fast Delivery Quotes: Call -888-GET--FOX for price and delivery confirmation. 9

12 QUARTZ CRYSTAL SELECTION GUIDE SURFACE MOUNT CRYSTALS PRODUCT FX6B FX5B FX5 Series FQA FMB Range Tolerance Stability Temperature Range Key Features Catalog Pages ~ MHz ±50 PPM ~ ± 0 PPM ±50 PPM ~ ± 0 PPM -0 C ~ +60 C to -0ºC ~ +80ºC x.6mm 0.55mm Height Max Ultra Low Profile Page ~ MHz ±50 PPM ~ ±0 PPM ±50 PPM ~ ±0 PPM -0 C ~ +60 C to -ºC ~ +85ºC. x.5mm.0mm Height Max to 50 MHz Resin Sealed or Seam Sealed Page ~ MHz ±50 PPM ~ ±0 PPM ±50 PPM ~ ±0 PPM -0 C ~ +60 C to -ºC ~ +85ºC 5 x.mm.0mm Height Max to 67 MHz Resin Sealed or Seam Sealed Page ~ MHz ~ MHz ±50 PPM ~ ±0 PPM ±50 PPM ~ ±5 PPM ±00 PPM ~ ±0 PPM ±00 PPM ~ ± PPM -0 C ~ +60 C to -0 C ~ +60 C to -ºC ~ +85ºC -ºC ~ +85ºC 6 x.5mm 6 x.5mm.4mm Height Max.mm Height Max Low Cost - Resin Sealed to 67 MHz to MHz Seam Sealed Page 4 Page 5 PRODUCT FE FD FC FPX HC49SD Range Tolerance Stability Temperature Range Key Features Stocking Std ~ MHz ±50 PPM ~ ±0 PPM ±50 PPM ~ ±5 PPM -0 C ~ +60 C to -ºC ~ +85ºC 7.5 x 5mm.7mm Height Max Low Cost - Resin Sealed to 50 MHz Additional Footprints (FH, FL) ~ MHz ±50 PPM ~ ±5 PPM ±50 PPM ~ ± PPM -0 C ~ +60 C to -ºC ~ +85ºC 7.5 x 5mm.mm Height Max to 50 MHz Seam Sealed.00 ~ 7.00 MHz ±50 PPM ~ ±0 PPM ±50 PPM ~ ±5 PPM -0 C ~ +60 C to -ºC ~ +85ºC.8 x 5.5mm.mm Height Max Low Cost - Resin Sealed Stocking Std ~ MHz ±50 PPM ~ ±0 PPM ±00 PPM ~ ±0 PPM -0 C ~ +60 C to -ºC ~ +85ºC Low Cost Plastic Encapsulated Stocking Std..00 ~ MHz ±50 PPM ~ ±0 PPM ±50 PPM ~ ±5 PPM -0 C ~ +60 C to -ºC ~ +85ºC Low Cost to 50 MHz Catalog Pages Page 6 Page 7 Page 8 Page 9 Page 0 THRU-HOLE CRYSTALS / WATCH CRYSTALS PRODUCT HC49S HC80U HC49U WATCH CRYSTALS Stocking Std. Stocking Std. Range Tolerance Stability Temperature Range Key Features.00 ~ MHz ±50 PPM ~ ±0 PPM ~ ±5 PPM -0 C ~ +70 C to -ºC ~ +85ºC.6mm Profile Low Cost Resistance Weld to 50 MHz ~ MHz ±0 PPM ~ ±5 PPM ±50 PPM ~ ± PPM -0 C ~ +70 C to -ºC ~ +70ºC High Range to 50 MHz.84 ~ MHz ±0 PPM ~ ±5 PPM ±50 PPM ~ ± PPM -0 C ~ +70 C to -ºC ~ +85ºC Low Cost to MHz.768 khz ±0PPM -0.04PPM / ( C) -0 C ~ +60 C / -ºC ~ +85ºC Miniature Pkgs. Long Term Stability Catalog Pages Page Page FASTFOX is a quick delivery service. Check with Fox Customer Service for available frequencies. Page Pages 4-6 IMPORTANT When ordering any non-standard crystals, please specify series or parallel resonance. If parallel, the load capacitance (CL) needs to be specified in picofarads pf. 0

13 CERAMIC SMD CRYSTAL FX6B Ultra Low Profile Pb Free OPTIONS Tolerances < ± 0 PPM Stabilities < ± 0 PPM Temp Range to -0ºC ~ +80ºC STANDARD SPECIFICATIONS Range 5ºC Stability, 5ºC Over Operating Temp Range Temperature Range Operating (TOPR) Equivalent Series Resistance Shunt Capacitance (Co) Load Capacitance (CL) Drive Level Aging per year ~ MHz ±50 PPM ±50 PPM -0ºC ~ +60ºC 50 Ω 00 Ω 7.0 pf 0 pf ~ Series (Customer Specified) 50 µw ±5 PPM Other tolerances, stabilities & operating temperature ranges available. Consult Fox Customer Service for specific requirements. All specifications subject to change without notice. Rev. 0/0/0 See page 8 for tape and reel specifications.

14 CERAMIC SMD CRYSTAL FX5B Low Cost to 50 MHz Tape and Reel (,000 pcs. STD) Pb Free OPTIONS Tolerances to < 0 PPM Stabilities to < 0 PPM Temperatures to -ºC ~ +85ºC 0.8mm Height Max STANDARD SPECIFICATIONS Range 5ºC Stability, 5ºC Over Operating Temp Range Temperature Range Operating (TOPR) Storage (TSTG) Equivalent Series Resistance Shunt Capacitance (Co) Load Capacitance (CL) Drive Level Aging per year MAX (unless otherwise noted) ~ MHz ±50 PPM ±50 PPM -0ºC ~ +60ºC -ºC ~ +85ºC 90 Ω 7.0 pf 0 pf ~ Series (Customer Specified) 0. mw ±5 PPM Other tolerances, stabilities & operating temperature ranges available. Consult Fox Customer Service for specific requirements. All specifications subject to change without notice. Rev. 0/0/0 See page 8 for tape and reel specifications.

15 CERAMIC SMD CRYSTALS FX5 SERIES Low Cost to 67 MHz Resin Sealed (A & C Version) Seam Sealed (B Version) Tape and Reel (,000 pcs. STD) Pb Free OPTIONS Tolerances to < 0 PPM (B Version) Stabilities to < 0 PPM (B Version) Temperatures to -ºC ~ +85ºC STANDARD SPECIFICATIONS Range Tolerance, Ta=5ºC ~.000 MHz.000+ ~ MHz Stability ~.000 MHz 5ºC).000+ ~ MHz Temperature Range Operating (TOPR) Storage (TSTG) Shunt Capacitance (Co) Load Capacitance (CL) Drive Level Aging per year MAX (unless otherwise noted) ~ MHz See Stability ±50 PPM ±00 PPM -0ºC ~ +60ºC -0ºC ~ +85ºC 7.0 pf 0 pf ~ Series (Customer Specified) 0. mw ±5 PPM Other tolerances, stabilities & operating temperature ranges available. Consult Fox Customer Service for specific requirements. Inclusive of tolerance at 5ºC All specifications subject to change without notice. Rev. 07/9/0 Range (MHz) ~ ~ ~ Operating Mode Max ESR W See page 8 for tape and reel specifications.

16 CERAMIC RESIN SEALED SMD CRYSTAL FQA Low Cost to MHz Resin Sealed Tape and Reel (,000 pcs. STD) Pb Free OPTIONS Tolerances to < 0 PPM Stabilities to < 0 PPM Temperatures to -ºC ~ +85ºC STANDARD SPECIFICATIONS Range Stability Over Operating Temp Range Temperature Range Operating (TOPR) Storage (TSTG) Shunt Capacitance (Co) Load Capacitance (CL) Drive Level Aging per year MAX (unless otherwise noted) ~ MHz ±00 PPM -0ºC ~ +60ºC -ºC ~ +85ºC 7.0 pf 0 pf ~ Series (Customer Specified) 0. mw ±5 PPM Other stabilities & operating temperature ranges available. Consult Fox Customer Service for specific requirements. Inclusive of tolerance at 5ºC. All specifications subject to change without notice. Rev. 0/0/0 Range (MHz) ~ ~ ~ ~ Operating Mode rd OT Max ESR W See page 8 for tape and reel specifications.

17 CERAMIC SEAM SEALED SMD CRYSTAL FMB to MHz Seam Sealed Tape and Reel (,000 pcs. STD) Pb Free OPTIONS Tolerances to < 5 PPM Stabilities to < PPM Temperatures to -ºC ~ +85ºC STANDARD SPECIFICATIONS Range Stability Over Operating Temp Range Temperature Range Operating (TOPR) Storage (TSTG) Shunt Capacitance (Co) Load Capacitance (CL) Drive Level Aging per year MAX (unless otherwise noted) ~ MHz ±00 PPM -0ºC ~ +60ºC -ºC ~ +85ºC 7.0 pf 0 pf ~ Series (Customer Specified) 0. mw ±5 PPM Other tolerances, stabilities & operating temperature ranges available. Consult Fox Customer Service for specific requirements. Inclusive of tolerance at 5ºC. All specifications subject to change without notice. Rev. 0/0/0 Range (MHz) ~ ~ ~ ~ Operating Mode rd OT Max ESR W See page 8 for tape and reel specifications. 5

18 CERAMIC RESIN SEALED SMD CRYSTAL FE Low Cost High Range to 50 MHz (BT Cut) Resin Sealed Tape and Reel (,000 pcs. STD) Pb Free OPTIONS Tolerances to < 0 PPM Stabilities to < 5 PPM Temperatures to -ºC ~ +85ºC.4mm Height Max Additional Footprints (FH, FL) STANDARD SPECIFICATIONS Range 5ºC Stability, 5ºC Over Operating Temp Range Temperature Range Operating (TOPR) Storage (TSTG) Shunt Capacitance (Co) Load Capacitance (CL) Drive Level Aging per year MAX (unless otherwise noted) ~ MHz ±50 PPM -0ºC ~ +60ºC -ºC ~ +85ºC 7.0 pf 0 pf ~ Series (Customer Specified) 0.5 mw ±5 PPM Other stabilities & operating temperature ranges available. Consult Fox Customer Service for specific requirements. All specifications subject to change without notice. Rev. 0/0/0 Range (MHz) ~ ~ ~ ~ ~ Operating Mode rd OT 5th OT Max ESR W See page 8 for tape and reel specifications.

19 CERAMIC SEAM SEALED SMD CRYSTAL FD High Range to 50 MHz (BT Cut) Seam Sealed Tape and Reel (,000 pcs. STD) Pb Free OPTIONS Tolerances to < 5 PPM Stabilities to < PPM Temperatures to -ºC ~ +85ºC STANDARD SPECIFICATIONS Range 5ºC Stability, 5ºC Over Operating Temp Range Temperature Range Operating (TOPR) Storage (TSTG) Shunt Capacitance (Co) Load Capacitance (CL) Drive Level Aging per year MAX (unless otherwise noted) ~ MHz ±50 PPM ±50 PPM -0ºC ~ +60ºC -ºC ~ +85ºC 7.0 pf 0 pf ~ Series (Customer Specified) 0.5 mw ±5 PPM Other tolerances, stabilities & operating temperature ranges available. Consult Fox Customer Service for specific requirements. All specifications subject to change without notice. Rev. 0/0/0 Range (MHz) ~ ~ ~ ~ Operating Mode rd OT 5th OT Max ESR W See page 8 for tape and reel specifications. 7

20 CERAMIC RESIN SEALED SMD CRYSTAL FC Low Cost Resin Sealed Tape and Reel (,000 pcs. STD) Pb Free OPTIONS Tolerances to < 0 PPM Stabilities to < 5 PPM Temperatures to -ºC ~ +85ºC STANDARD SPECIFICATIONS Range 5ºC Stability, 5ºC Over Operating Temp Range Temperature Range Operating (TOPR) Storage (TSTG) Shunt Capacitance (Co) Load Capacitance (CL) Drive Level Aging per year All specifications subject to change without notice. Rev. 0/0/0 MAX (unless otherwise noted).00 ~ 7.00 MHz ±50 PPM ±50 PPM -0ºC ~ +60ºC -ºC ~ +85ºC 7.0 pf 0 pf ~ Series (Customer Specified) 0. mw ±5 PPM Range (MHz).00 ~ ~ ~ ~ ~ ~ ~ 7.00 Operating Mode Max ESR W See page 8 for tape and reel specifications8

21 PLASTIC ENCASED SMD CRYSTAL FPX Low Cost Stocking Standard Plastic Encapsulated Tape and Reel (,000 pcs. STD) OPTIONS Tolerances to < 0 PPM Stabilities to < 0 PPM Temperatures to -ºC ~ +85ºC Alternate Metal Can Package (HC49SPX) STANDARD SPECIFICATIONS Range 5ºC Stability, 5ºC Over Operating Temp Range Temperature Range Operating (TOPR) Storage (TSTG) Shunt Capacitance (Co) Load Capacitance (CL) Drive Level Aging per year MAX (unless otherwise noted) ~ MHz ±50 PPM ±00 PPM -0ºC ~ +70ºC -55ºC ~ +5ºC 7.0 pf 0 pf ~ Series (Customer Specified) 0. mw ±5 PPM Other tolerances, stabilities & operating temperature ranges available. Consult Fox Customer Service for specific requirements. All specifications subject to change without notice. Rev. 0/0/0 Range (MHz).579 ~ ~ ~ ~ ~ ~ ~ ~ ~ Operating Mode rd OT Max ESR W See page 8 for tape and reel specifications. 9

22 RESISTANCE WELD SMD CRYSTAL HC49SD Low Cost Stock Standard to 50 MHz (BT Cut) Tape and Reel (,000 pcs. STD) OPTIONS Tolerances to < 0 PPM Stabilities to < 5 PPM Temperatures to -ºC ~ +85ºC 4 Pad HC49SPX (Alternate to FPX).mm Height Max (HC49SSD) STANDARD SPECIFICATIONS Range 5ºC Stability, 5ºC Over Operating Temp Range Temperature Range Operating (TOPR) Storage (TSTG) Shunt Capacitance (Co) Load Capacitance (CL) Drive Level 5ºC; per year MAX (unless otherwise noted).00 ~ MHz ±50 PPM ±50 PPM -0ºC ~ +70ºC -ºC ~ +85ºC 7.0 pf 0 pf ~ Series (Customer Specified) 0.5 mw ±5 PPM Other tolerances, stabilities & operating temperature ranges available. Consult Fox Customer Service for specific requirements. All specifications subject to change without notice. Rev. 0/0/0 Range (MHz).00 ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ Operating Mode rd OT Max ESR W See page 8 for tape and reel specifications.

23 RESISTANCE WELD THRU-HOLE CRYSTAL HC49S Low Cost Stocking Standard to 50 MHz (BT Cut) Resistance Weld OPTIONS Tolerances to < 0 PPM Stabilities to < 5 PPM Temperatures to -ºC ~ +85ºC.5mm Height Max (HC49SS) STANDARD SPECIFICATIONS Range 5ºC Stability, 5ºC Over Operating Temp Range Temperature Range Operating (TOPR) Storage (TSTG) Shunt Capacitance (Co) Load Capacitance (CL) Drive Level Aging per year MAX (unless otherwise noted).00 ~ MHz ±50 PPM ±50 PPM -0ºC ~ +70ºC -ºC ~ +85ºC 7.0 pf 0 pf ~ Series (Customer Specified) 0.5 mw ±5 PPM Other tolerances, stabilities & operating temperature ranges available. Consult Fox Customer Service for specific requirements. All specifications subject to change without notice. Rev. 0/0/0 Range (MHz).00 ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ Operating Mode rd OT Max ESR W

24 RESISTANCE WELD THRU-HOLE CRYSTAL HC80U High Range to 50 MHz Resistance Weld OPTIONS Tolerances to < 5 PPM Stabilities to < PPM Temperatures to -ºC ~ -85ºC SMD Gullwing (HC80UW) STANDARD SPECIFICATIONS Range 5ºC Stability, 5ºC Over Operating Temp Range Temperature Range Operating (TOPR) Storage (TSTG) Shunt Capacitance (Co) Load Capacitance (CL) Drive Level Aging per year MAX (unless otherwise noted) ~ MHz ±0 PPM ±50 PPM -0ºC ~ +70ºC -ºC ~ +85ºC 7.0 pf 0 pf ~ Series (Customer Specified).0 mw ± PPM Other tolerances, stabilities & operating temperature ranges available. Consult Fox Customer Service for specific requirements. All specifications subject to change without notice. Rev. 0/0/0 Range (MHz) ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ Operating Mode rd OT 5th OT 7th OT Max ESR W

25 RESISTANCE WELD THRU-HOLE CRYSTAL HC49U Low Cost Stocking Standard High Range to MHz Resistance Weld OPTIONS Tolerances to < 5 PPM Stabilities to < PPM Temperatures to -ºC ~ -85ºC Mylar Spacer Vinyl Sleeve Third Lead SMD Gullwing (HC49UW) STANDARD SPECIFICATIONS Range 5ºC Stability, 5ºC Over Operating Temp Range Temperature Range Operating (TOPR) Storage (TSTG) Shunt Capacitance (Co) Load Capacitance (CL) Drive Level.84 ~.000 MHz.000+ ~ MHz Aging per year MAX (unless otherwise noted).84 ~ MHz ±0 PPM ±50 PPM -0ºC ~ +70ºC -ºC ~ +85ºC 7.0 pf 0 pf ~ Series (Customer Specified) mw.0 mw ±5 PPM Other tolerances, stabilities & operating temperature ranges available. Consult Fox Customer Service for specific requirements. All specifications subject to change without notice. Rev. 0/0/0 Range (MHz).84 ~ ~.0.0+ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ Operating Mode rd OT 5th OT 7th OT Max ESR W

26 SMD TUNING FORK FSX Extremely Small Size Low Cost.4mm Height Max Tape and Reel (,000 pcs. STD) STANDARD SPECIFICATIONS Range 5ºC Stability, 5ºC Temperature Range Operating (TOPR) Storage (TSTG) Equivalent Series Resistance Load Capacitance (CL) Insulation 00VDC Drive Level Aging All specifications subject to change without notice. Rev. 0/0/0 MAX (unless otherwise noted).768 khz ±0 PPM -0.04PPM/( ºC) -ºC ~ +85ºC -ºC ~ +85ºC 65 kω 7 pf,.5pf 500 MΩ 0. µw ± PPM 4 See page 8 for tape and reel specifications.

27 SMD TUNING FORK FSR7 Miniature Package.5mm Height Long Term Stability Tape and Reel (,000 pcs. STD) STANDARD SPECIFICATIONS 5ºC Stability Temperature Coefficient Temperature Range Turnover (TO) Operating (TOPR) Storage (TSTG) Equivalent Series Resistance (RS) Load Capacitance (CL) Insulation 00VDC Drive Level Aging per year All specifications subject to change without notice. Rev. 0/0/0 MAX (unless otherwise noted).768 khz ±0 PPM PPM / ( ºC) +0ºC ~ +0ºC -ºC ~ +85ºC -55ºC ~ +5ºC 50 kω.5 pf (Standard) 6 pf (Optional) 500 MΩ.0 µw ± PPM See page 8 for tape and reel specifications. 5

28 THRU-HOLE TUNING FORK NC5/NC6/NC8 Miniature Packages Low Cost Cold Weld Design Long Term Stability Tight Tolerance STANDARD SPECIFICATIONS 5ºC Stability Temperature Coefficient Temperature Range Turnover (TO) Operating (TOPR) Storage (TSTG) Equivalent Series Resistance (RS) NC5 / NC6 NC8 Load Capacitance (CL) Insulation 00VDC Drive Level Aging per year All specifications subject to change without notice. Rev. 0/0/0 MAX (unless otherwise noted).768 khz ± 0 PPM PPM / ( ºC) +0ºC ~ +0ºC -0ºC ~ +60ºC -0ºC ~ +70ºC 50 kω 5 kω.5 pf (Standard) 6 pf (Optional) 500 MΩ.0 µw ± PPM 6

29 Fox Electronics Part Description Guide for Crystals Make Selection from Product Family in Fox Catalog or Foxonline.com For Example: HC49SD Fox Production SMD Reel Quantities FX6B K FX5B K FX5 Series K FQA K FMB K FE K FD K FC K FPX K HC49SD K FSX K FSR7 K (####.######) MHz Customer Fills In Section A A ± 00ppm B ± 50 ppm C ± 0ppm D ± 5ppm E ± 0ppm F ± 5ppm G ± ppm H ± 0ppm J ± 7.5ppm K ± 7ppm L ± 5ppm M ± 4ppm N ± ppm P ±.5ppm R ± ppm S ±.5ppm T ± ppm U ± 0.5ppm V ± 00ppm W ± 70ppm X ± 00ppm OVERALL Y ± 000ppm Z ± Other Tolerance Pick from Section A 4 Stability Pick from Section A Operating Temp. Range A = 0º to +50ºC C = 0º to +70ºC B = -0º to +50ºC D = -0º to +60ºC E = -0º to +70ºC F = -0º to +70ºC Z = -0º to +75ºC G = -0º to +70ºC H = -0º to +75ºC J = -0º to +80ºC K = -0º to +85ºC L = -5º to +80ºC V = -5º to +85ºC M = -º to +85ºC N = -º to +90ºC P = -º to +05ºC U = -55º to +85ºC R = -55º to +00ºC S = -55º to +05ºC T = -55º to +5ºC W = Other 5 Operating Temp Circuit Condition 000 = Series 060 = 6pF 070 = 7pF 075 = 7.5pF 080 = 8pF 00 = 0pF 05 = 0.5pF 0 = pf 5 =.5pF 0 = pf 50 = 5pF 60 = 6pF 80 = 8pF 00 = 0pF 0 = pf = 4pF 70 = 7pF 00 = 0pF 0 = pf 0 = pf 500 = 50pF 999 = Other 6 Circuit Condition Notes: Fox unique part numbers for non-standards are randomly generated based on the elements of the part description in a format: ### - - Random # ( is Fox unique part number). All combinations are not possible. * 0 = Tape/Reel assumes that no quantity per reel was specified: therefore, the Fox Production SMD Reel Quantities list applies. For any other quantities specified a broken reel charge will apply. 7 Oscillation Mode Oscillation Mode SMD Packaging 0 = Tape/Reel* = 50 = 50 = rd Overtone 500 = = 5th Overtone 000 = = 7th Overtone Tape Only = Tape Only 9 = 9th Overtone 0 = BT Cut Value Added 8 SMD Packaging 9 Fox Use 0/ Value Added Custom A = rd LEAD Soldered B = rd LEAD Welded C = rd Base Lead D = Sleeve E = Flat Spacer F = Ribbed Spacer L = Formed Leads M = Special Marking N = Cut Base P = Cut Top S = Bulk T = Trays V = Radial Tape/Straight W = Radial Tape/Crimp Y = Filter Box Z = SMD Tape Z8 = SMD 8mm Tape (FPX Only) Z - SMD mm Tape (FPX and FPX Rev. C) Custom C = Custom Please attach drawing and/or additional electrical specs for our engineering department. 7

30 SURFACE MOUNT CRYSTALS TAPE AND REEL SPECIFICATIONS TAPE SPECIFICATIONS (millimeters) MODEL FX5B FX5 Series FQA FMB FE FD FC FPX HC49SD FSX FSR Standard reel quantity. A B C D E F STD QTY,000,000,000,000,000,000,000,000,000,000,000 REEL SPECIFICATIONS (millimeters) MODEL FX5B FX5 Series FQA FMB FE FD FC FPX HC49SD FSX FSR G H I J /00 K L M. 8

31 CLOCK OSCILLATOR SELECTION GUIDE JITO - AND SURFACE MOUNT OSCILLATORS PRODUCT JITO - F0 Series F50L/F5L Series F50L Series F400 Series Range Stability Temperature Range Key Features Full Size 4 PIN DIP Half Size 8 PIN DIP MIN-6 JITO-P Plastic Surface Mount 0.44 ~ MHz,, ±0PPM, ±5PPM, ±0PPM -0 C ~ +70 C and -ºC ~ +85ºC Custom and Standard Frequencies. or 5 Volts, HCMOS or PECL SMD and Thru-Hole packages Delivery in 0 days or less!.800 ~ MHz,, ±5PPM, ±0PPM -0 C ~ +70 C - C ~ +85 C (Option). x.5mm.v HCMOS Low Current Standby Function (0µA MAX).800 ~ MHz ±00, ±50, ±5, ±0 PPM -0ºC ~ +70ºC - C ~ +85 C (Option) 5 x.mm.8v /.5V Operation HCMOS Low Current Standby Function (0µA MAX).544 ~ MHz ±00, ±50, ±5, ±0 PPM -0ºC ~ +70ºC - C ~ +85 C (Option) 5 x.mm.v Operation HCMOS Low Current Standby Function (0µA MAX).544 ~ MHz ±00, ±50, ±5, ±0 PPM -0ºC ~ +70ºC - C ~ +85 C (Option) 6 x.5mm.v Operation HCMOS Low Current Standby Function (0µA MAX) Catalog Pages Pages 4-9 Pages Pages 4 & 4 Page 4 Page 44 SURFACE MOUNT OSCILLATORS PRODUCT F4500/F40 Series F400 Series F0 Series F45 Series F4600 Series Range Stability Temperature Range Key Features Catalog Pages.800 ~ MHz ±00, ±50, ±5, ±0 PPM -0ºC ~ +70ºC - C ~ +85 C (Option) 7.5 x 5mm.8V /.5V Operation HCMOS Low Current Standby Function (0µA MAX) Pages 45 & ~ MHz ±00, ±50, ±5, ±0 PPM -0ºC ~ +70ºC - C ~ +85 C (Option) 7.5 x 5mm.85V Operation HCMOS Low Current Standby Function (0µA MAX) Page 47 Stocking Std. 0.0 ~ MHz ±00, ±50, ±5, ±0 PPM ±5 PPM, ±0 PPM -0ºC ~ +70ºC - C ~ +85 C (Option) 7.5 x 5mm.V Operation HCMOS Low Current Standby Function (0µA MAX) Page 48 & ~ MHz ±00, ±50, ±5, ±0 PPM -0ºC ~ +70ºC - C ~ +85 C (Option) 7.5 x 5mm 5.0V Operation HCMOS/TTL Tri-State E/D Page 50 Stocking Std ~ MHz ±00, ±50, ±5, ±0 PPM -0ºC ~ +70ºC - C ~ +85 C (Option) 7.5 x 5mm.V Operation LV-PECL E/D Function Page 5 SURFACE MOUNT AND THRU-HOLE OSCILLATORS PRODUCT RFX00 FSO Series KFO Series F5C-E / H5C-E F5C-E / H5C-E F00E Range 6~700MHz,.44~.5GHz Stability ±00, ±50, ±5, ±0 PPM Temperature Range -0ºC ~ +70ºC -ºC ~ +85ºC (Option) Key Features 7.5 x 5mm.V LV-PECL XO Complementary Output.000 ~ MHz ±00, ±00, ±50 PPM -0ºC ~ +70ºC - C ~ +85 C (±00 PPM Option) 4 x 9.8mm 5.0V /.V HCMOS/TTL Tri-State E/D.500 ~ MHz ±00, ±50 PPM -0ºC ~ +70ºC -ºC ~ +85ºC (Option).8 x 9.8mm 5.0V /.V HCMOS/TTL Tri-State E/D.000 ~ MHz.000 ~ MHz ±00, ±50, ±5, ±0 PPM ±00, ±50, ±5, ±0 PPM 0ºC ~ +70ºC 0ºC ~ +70ºC -ºC ~ +85ºC (Option) -ºC ~ +85ºC (Option) 4-Pin / 8-Pin DIP 5.0V /.V HCMOS/TTL Tri-State E/D Stocking Std. 4-Pin / 8-Pin DIP 5.0V TTL Stocking Std. Catalog Pages Page 5 Pages 5 Page 54 Page Page 57 9

32 CLOCK OSCILLATOR GENERAL CHARACTERISTICS MECHANICAL SPECIFICATIONS Gross Leak Test Hermetically Sealed Package Seal Strength (Thru-Hole) Bend Test (Pin Material) Solvent Resistance Marking Ink Solderability Maximum Soldering Temp. All units 00% leak tested. Mass spectrometer leak rate less than x 0-8 Atm. CC/sec. of helium..7kg max. force perpendicular to top and bottom. Will withstand maximum bend of 90, referenced to base, for bends. (Iron and Nickel - Nickel coated, solder dipped.) Isopropyl Alcohol, Trichloroethane Note - Ultrasonic cleaning not to be used. Note - Unit can be cleaned in only one solvent listed. Epoxy, heat cured or UV cured (ceramic SMD) The terminals are considered solderable and acceptable for electrical connection if 95% of the cooled solder surface is uniform and free from breaks and pinholes. The other 5% of the cooled solder surface may show only pinholes, voids, or rough spots that are not concentrated in one area. 70 C for 0 seconds on leads. Reliability Tests: Shock, Vibration, Aging (Burn-in), Temperature Cycle. All specifications subject to change without notice. Rev. 05/0/00 0

33 Radio Crystal Oscillators The rfxo Family of Oscillators was developed by Fox Electronics Inc. for SONET/SDH/ATM/WAN applications. By combining a proprietary ASIC architechture with our advantaced quartz technologies, these rfxos are able to generate very clean output frequencies. This exclusive combination of radio frequency control technologies enable these rfxos to deliver the optimum cost-to-performance ratio in the industry for rfxo applications. rfxo Features: Available as a standard Oscillator (XO) or Voltage Controlled Crystal Oscillator (VCXO) Frequencies from 600MHz to.5ghz Industry standard SMT package (7.5x5x.5mm Max) LV-PECL complementary outputs.v and.5v versions Output Enable/Disable function Low jitter and phase Noise Tight stabilities and extended temperature ranges available rfv00 rfxo Applications: PLL circuits for clock smoothing or frequency translation SONET/SDH, ATM WAN, OC- up through OC-768 including FEC rates, Gb Ethernet and Fiber Channel Timing Reference for Optical and Data Communications system rfx00 rfxo Description: The rfxo family of Oscillators is an ASIC-driven crystal-based line of frequency control products. These rfxos are available as standard Crystal Oscillators (XOs) or Voltage Controlled Crystal Oscillators (VCXOs) with frequencies from 600MHz to.5ghz. The rfxo family of products generates an output at the frequency of operation (fo) with low jitter and phase noise in the frequency domain. Low clock jitter is essential to achieve a low bit error rate in optical data communications and also allows for full use of the allotted bandwidth. This makes the rfxo ideally suited for the next generation of low jitter clocks and data streams for SONET/SDH applications.

34 .V LV-PECL XO RFX00.V Operation High Performance Complementary Output Pb Free Applications include SONET / SDH / ATM / WAN / Gb Ethernet PRELIMINARY MODEL NUMBER SELECTION Model Number RFX00 RFX00R RFX05 RFX05R RFX06 RFX06R RFX08 Available s Storage Temperature Range Supply Voltage (VDD) Supply Current Rise Time (0% ~ 80% Vp-p) Fall Time (80% ~ 0% Vp-p) Symmetry (50% Vp-p) Output Voltage (VOL) (VOH) Stability ±5PPM ±5PPM ±0PPM ELECTRICAL CHARACTERISTICS Start-up Time (TS) PECL Skew (50% Vp-p) Jitter Integrated khz to 0MHz RMS Cycle-to-Cycle Operating Temperature (ºC) -0 ~ ~ ~ ~ ~ 700 MHz,.44 ~.5GHz -55ºC ~ +5ºC.V ± 0% 60mA 0.5nS 0.5nS 45/55.05V ~.65 V.55 ~.5 V 0mS 5pS <0.5pS ps 0 ps Inclusive of 5ºC tolerance, operating temperature range, input voltage change, load change, aging, shock, and vibration. All specifications subject to change without notice. Rev. 0/0/0 RFX00 Series Recommended Circuit LV-PECL OUT LV-PECL OUT See page 60 for tape and reel specifications.

35 .V LV-PECL VCXO RFV00.V Operation High Performance Complementary Output Pb Free Applications include SONET / SDH / ATM / WAN PRELIMINARY MODEL NUMBER SELECTION Model Number RFV50 RFV50R RFV5 RFV5R RFV0 Stability ±5PPM ±5PPM ±0PPM Pullability Operating Temperature (ºC) -0 ~ ~ ~ +70 ELECTRICAL CHARACTERISTICS Available s Storage Temperature Range Supply Voltage (VDD) Supply Current Rise Time (0% ~ 80% Vp-p) Fall Time (80% ~ 0% Vp-p) Symmetry (50% Vp-p) Output Voltage (VOL) (VOH) Start-up Time (TS) Linearity Modulation Bandwidth PECL Skew (50% Vp-p) Jitter Integrated khz to 0MHz RMS Cycle-to-Cycle 6 ~ 700 MHz,.44 ~.5GHz -55ºC ~ +5ºC.V ± 0% 60mA 0.5nS 0.5nS 45/55.05V ~.65 V.55 ~.5 V 0mS ± 0% >0kHz 5pS <0.5pS ps 0 ps Inclusive of 5ºC tolerance, operating temperature range, input voltage change, load change, aging, shock, and vibration. All specifications subject to change without notice. Rev. 0/0/0 RFV00 Series Recommended Circuit LV-PECL OUT LV-PECL OUT See page 79 for tape and reel specifications.

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42 .V HCMOS SMD OSCILLATOR WITH STANDBY F0 SERIES.V Operation HCMOS Output Standby Function Tape and Reel (,000 pcs. STD) Pb Free OPTIONS.mm Max Height MODEL NUMBER SELECTION Model Number F0 F0R F5 F5R F6 F8 Stability ±5PPM ±0PPM Operating Temperature (ºC) Range (MHz).800 ~ ~ ~ ~ ~ ~ ELECTRICAL CHARACTERISTICS Range (FO) Storage Temperature Range Supply Voltage (VDD) Input Current (IDD).800 ~ 00 MHz 00+ ~ MHz (TSTG) MAX (unless otherwise noted).800 ~ MHz -55ºC ~ +5ºC.V ± 0% 0mA 5mA Output Symmetry (50% VDD).800 ~ MHz 45% ~ 55% Rise Time (0% ~ 90% VDD) (TR) Fall Time (90% ~ 0% VDD) (TF) Output Voltage (VOL) Output Current (VOH) (IOL) (IOH) Output Load (HCMOS) Standby Current (VIL 0.99V) Start-up Time (TS) Output Disable Time Output Enable Time See page 60 for tape and reel specifications. 6nS 6nS 0% VDD 90% VDD Min ma Min -ma Min 5pF 0µA 5mS 50nS 5mS Inclusive of 5ºC tolerance, operating temperature range, input voltage change, load change, aging, shock, and vibration. An internal pullup resistor from pin to pin 4 allows active output if pin is left open. See page 0 for mechanical specifications, test circuits, and output waveform. Note: A 0.0µF bypass capacitor should be placed between VDD (Pin 4) and GND (Pin ) to minimize power supply line noise. All specifications subject to change without notice. Rev. 0/0/0 ENABLE / DISABLE FUNCTION INH (Pin ) OUTPUT (Pin ) OPEN ACTIVE '' Level VIH 70% VDD ACTIVE '0' Level VIL 0% VDD High Z

43 .8V HCMOS CERAMIC SMD OSCILLATOR WITH STANDBY F50L SERIES.8V Operation HCMOS Output Low Power Consumption Standby Function Tape and Reel (,000 pcs. STD) Pb Free MODEL NUMBER SELECTION Model Number F50L F50LR F55L F55LR F56L F56LR F58L Stability ±5PPM ±5PPM ±0PPM Operating Temperature (ºC) Range (MHz).800 ~ ~ ~ ~ ~ ~ ~ ELECTRICAL CHARACTERISTICS Range (FO) Storage Temperature Range Supply Voltage (VDD) Input Current (IDD).800 ~.00 MHz.00+ ~ MHz Output Symmetry (50% VDD) Rise Time (0% ~ 80% VDD) (TR).800 ~.00 MHz.00+ ~ MHz Fall Time (80% ~ 0% VDD) (TF).800 ~.00 MHz.00+ ~ MHz Output Voltage (VOL) Output Current (VOH) (IOL) (IOH) Output Load (HCMOS) Standby Current Start-up Time (TS) Output Disable Time Output Enable Time (TSTG) MAX (unless otherwise noted).800 ~ MHz -55ºC ~ +5ºC.8V ± 5% 7mA 5mA % ~ 60% 5nS.5nS 5nS.5nS 0% VDD 80% VDD Min ma Min ma Min 5pF 0µA 0mS 00nS 0mS Inclusive of 5ºC tolerance, operating temperature range, input voltage change, load change, aging, shock, and vibration. An internal pullup resistor from pin to pin 4 allows active output if pin is left open. See page 0 for mechanical specifications, test circuits, and output waveform. All specifications subject to change without notice. Rev. 0/0/0 ENABLE / DISABLE FUNCTION INH (Pin ) OUTPUT (Pin ) OPEN ACTIVE '' Level VIH 70% VDD ACTIVE '0' Level VIL 0% VDD High Z See page 60 for tape and reel specifications. 4

44 .5V HCMOS CERAMIC SMD OSCILLATOR WITH STANDBY F5L SERIES.5V Operation HCMOS Output Low Power Consumption Standby Function Tape and Reel (,000 pcs. STD) Pb Free MODEL NUMBER SELECTION Model Number F5L F5LR F545L F545LR F546L F546LR F548L Stability ±5PPM ±5PPM ±0PPM Operating Temperature (ºC) Range (MHz).800 ~ ~ ~ ~ ~ ~ ~ ELECTRICAL CHARACTERISTICS Range (FO) Storage Temperature Range Supply Voltage (VDD) Input Current (IDD) (TSTG) MAX (unless otherwise noted).800 ~ MHz -55ºC ~ +5ºC.5V ± 5%.800 ~.00 MHz 0mA.00+ ~ MHz ma Output Symmetry (50% VDD) 45% ~ 55% Rise Time (0% ~ 90% VDD) (TR) 5nS Fall Time (90% ~ 0% VDD) (TF) 5nS Output Voltage (VOL) 0% VDD (VOH) 90% VDD Min Output Current (IOL) 4mA Min (IOH) 4mA Min Output Load (HCMOS) 5pF Standby Current 0µA Start-up Time (TS) 0mS Output Disable Time 50nS Output Enable Time 0mS Inclusive of 5ºC tolerance, operating temperature range, input voltage change, load change, aging, shock, and vibration. An internal pullup resistor from pin to pin 4 allows active output if pin is left open. See page 0 for mechanical specifications, test circuits, and output waveform. All specifications subject to change without notice. Rev. 0/0/0 ENABLE / DISABLE FUNCTION INH (Pin ) OUTPUT (Pin ) OPEN ACTIVE '' Level VIH 70% VDD ACTIVE '0' Level VIL 0% VDD High Z 4 See page 60 for tape and reel specifications.

45 .V HCMOS CERAMIC SMD OSCILLATOR WITH STANDBY F50L SERIES.V Operation HCMOS Output Standby Function Tape and Reel (,000 pcs. STD) Pb Free OPTIONS 5.0V (F550L) Version Available MODEL NUMBER SELECTION Model Number F50L F50LR F55L F55LR F56L F56LR F58L Stability ±5PPM ±5PPM ±0PPM Operating Temperature (ºC) Range (MHz).544 ~ ~ ~ ~ ~ ~ ~ ELECTRICAL CHARACTERISTICS Range (FO) Storage Temperature Range Supply Voltage (VDD) Input Current (IDD).544 ~ 00 MHz 00+ ~ MHz ~ MHz ~ MHz Output Symmetry (50% VDD) Rise Time (0% ~ 90% VDD) (TR) Fall Time (90% ~ 0% VDD) (TF) Output Voltage (VOL) Output Current (VOH) (IOL) (IOH) Output Load HCMOS Standby Current Start-up Time (TS) Output Disable Time Output Enable Time (TSTG) MAX (unless otherwise noted).544 ~ MHz -ºC ~ +85ºC.V ± 0% 5mA 0mA 5mA ma % ~ 60% 7nS 7nS 0% VDD 90% VDD Min ma Min -ma Min 5pF 0µA 0mS 50nS 0mS Inclusive of 5ºC tolerance, operating temperature range, input voltage change, load change, aging, shock, and vibration. An internal pullup resistor from pin to pin 4 allows active output if pin is left open. See page 0 for mechanical specifications, test circuits, and output waveform. All specifications subject to change without notice. Rev. 06/7/0 ENABLE / DISABLE FUNCTION INH (Pin ) OUTPUT (Pin ) OPEN ACTIVE '' Level VIH 70% VDD ACTIVE '0' Level VIL 0% VDD High Z See page 60 for tape and reel specifications. 4

46 .V HCMOS CERAMIC SMD OSCILLATOR WITH STANDBY F400 SERIES.V Operation HCMOS Output Standby Function Tape and Reel (,000 pcs. STD) Pb Free OPTIONS 5.0V (F0) Version Available MODEL NUMBER SELECTION Model Number F400 F400R F405 F405R F406 F406R F408 Stability ±5PPM ±5PPM ±0PPM Operating Temperature (ºC) Range (MHz).544 ~ ~ ~ ~ ~ ~ ~ ELECTRICAL CHARACTERISTICS Range (FO) Storage Temperature Range Supply Voltage (VDD) Input Current (IDD) Output Symmetry (50% VDD) Rise Time (0% ~ 90% VDD) (TR) Fall Time (90% ~ 0% VDD) (TF) Output Voltage (VOL) Output Current (VOH) (IOL) (IOH) Output Load Standby Current Start-up Time Output Disable Time Output Enable Time (HCMOS) (TS) (TSTG) MAX (unless otherwise noted).544 ~ MHz -ºC ~ +85ºC.V ± 0% 0mA % ~ 60% 6nS 6nS 0% VDD 90% VDD Min ma Min -ma Min 5pF 0µA 0mS 50nS 0nS Inclusive of 5ºC tolerance, operating temperature range, input voltage change, load change, aging, shock, and vibration. An internal pullup resistor from pin to pin 4 allows active output if pin is left open. See page 0 for mechanical specifications, test circuits, and output waveform. All specifications subject to change without notice. Rev. 0/0/0 44 ENABLE / DISABLE FUNCTION INH (Pin ) OUTPUT (Pin ) OPEN ACTIVE '' Level VIH 70% VDD ACTIVE '0' Level VIL 0% VDD High Z See page 60 for tape and reel specifications.

47 .8V HCMOS SMD OSCILLATOR WITH STANDBY F4500 SERIES.8V Operation HCMOS Output Low Power Consumption Standby Function Tape and Reel (,000 pcs. STD) Pb Free MODEL NUMBER SELECTION Model Number F4500 F4500R F4505 F4505R F4506 F4506R F4508 Stability ±5PPM ±5PPM ±0PPM Operating Temperature (ºC) Range (MHz).800 ~ ~ ~ ~ ~ ~ ~ ELECTRICAL CHARACTERISTICS Range (FO) Storage Temperature Range Supply Voltage (VDD) Input Current (IDD).000 ~.00 MHz.00+ ~ MHz Output Symmetry (50% VDD) Rise Time (0% ~ 80% VDD) (TR).800 ~.00 MHz.00+ ~ MHz Fall Time (80% ~ 0% VDD) (TF).800 ~.00 MHz.00+ ~ MHz Output Voltage (VOL) Output Current (VOH) (IOL) (IOH) Output Load Standby Current Start-up Time Output Disable Time Output Enable Time (HCMOS) (TS) (TSTG) MAX (unless otherwise noted).800 ~ MHz -55ºC ~ +5ºC.8V ± 5% 7mA 5mA % ~ 60% 5nS.5nS 5nS.5nS 0% VDD 80% VDD Min ma Min ma Min 5pF 0µA 0mS 00nS 0mS Inclusive of 5ºC tolerance, operating temperature range, input voltage change, load change, aging, shock, and vibration. An internal pullup resistor from pin to pin 4 allows active output if pin is left open. See page 0 for mechanical specifications, test circuits, and output waveform. Note: A 0.0µF bypass capacitor should be placed between VDD (Pin 4) and GND (Pin ) to minimize power supply line noise. All specifications subject to change without notice. Rev. 07/9/0 ENABLE / DISABLE FUNCTION INH (Pin ) OUTPUT (Pin ) OPEN ACTIVE '' Level VIH 70% VDD ACTIVE '0' Level VIL 0% VDD High Z See page 60 for tape and reel specifications. 45

48 .5V HCMOS SMD OSCILLATOR WITH STANDBY F40 SERIES.5V Operation HCMOS Output Low Power Consumption Standby Function Tape and Reel (,000 pcs. STD) Pb Free MODEL NUMBER SELECTION Model Number F40 F40R F45 F45R F46 F46R F48 Stability ±5PPM ±5PPM ±0PPM Operating Temperature (ºC) Range (MHz).800 ~ ~ ~ ~ ~ ~ ~ ELECTRICAL CHARACTERISTICS Range (FO) Storage Temperature Range Supply Voltage (VDD) Input Current (IDD) (TSTG) MAX (unless otherwise noted).800 ~ MHz -55ºC ~ +5ºC.5V ± 5%.800 ~.00 MHz 0mA.00+ ~ MHz ma Output Symmetry (50% VDD) 45% ~ 55% Rise Time (0% ~ 90% VDD) (TR) 5nS Fall Time (90% ~ 0% VDD) (TF) 5nS Output Voltage (VOL) 0% VDD (VOH) 90% VDD Min Output Current (IOL) 4mA Min (IOH) 4mA Min Output Load (HCMOS) 5pF Standby Current 0µA Start-up Time (TS) 0mS Output Disable Time 50nS Output Enable Time 0mS Inclusive of 5ºC tolerance, operating temperature range, input voltage change, load change, aging, shock, and vibration. An internal pullup resistor from pin to pin 4 allows active output if pin is left open. See page 0 for mechanical specifications, test circuits, and output waveform. Note: A 0.0µF bypass capacitor should be placed between VDD (Pin 4) and GND (Pin ) to minimize power supply line noise. All specifications subject to change without notice. Rev. 07/9/0 46 ENABLE / DISABLE FUNCTION INH (Pin ) OUTPUT (Pin ) OPEN ACTIVE '' Level VIH 70% VDD ACTIVE '0' Level VIL 0% VDD High Z See page 60 for tape and reel specifications.

49 .85V HCMOS SMD OSCILLATOR WITH STANDBY F400 SERIES.85V Operation HCMOS Output Standby Function Tape and Reel (,000 pcs. STD) Pb Free OPTIONS.05mm Height Max MODEL NUMBER SELECTION Model Number F400 F400R F405 F405R F406 F406R F408 Stability ±5PPM ±5PPM ±0PPM Operating Temperature (ºC) Range (MHz).544 ~ ~ ~ ~ ~ ~ ~ ELECTRICAL CHARACTERISTICS Range (FO) Temperature Range (TSTG) Supply Voltage (VDD) Input Current (IDD).544 ~ 00 MHz 00+ ~ MHz ~ MHz ~ MHz Output Symmetry (50% VDD) Rise Time (0% ~ 90% VDD) (TR).544 ~ MHz ~ MHz Fall Time (90% ~ 0% VDD) (TF).544 ~ MHz ~ MHz Output Voltage (IOL = ma) (VOL) (IOH = ma) (VOH) Output Current (VOL = 0% VDD) (IOL) (VOH = 90% VDD) (IOH) Output Load (HCMOS) Standby Current (VIL 0%VDD) Start-up Time (TS) Output Disable Time Output Enable Time MAX (unless otherwise noted).544 ~ MHz -55ºC ~ +5ºC.85V ± 5% 5mA 0mA 5mA 0mA 45% ~ 55% 6nS 4nS 6nS 4nS 0% VDD 90% VDD Min ma -ma 5pF 0µA 0mS 50nS 0mS Inclusive of 5ºC tolerance, operating temperature range, input voltage change, load change, aging, shock, and vibration. An internal pullup resistor from pin to pin 4 allows active output if pin is left open. See page 0 for mechanical specifications, test circuits, and output waveform. Note: A 0.0µF bypass capacitor should be placed between VDD (Pin 4) and GND (Pin ) to minimize power supply line noise. All specifications subject to change without notice. Rev. 07/9/0 ENABLE / DISABLE FUNCTION INH (Pin ) OUTPUT (Pin ) OPEN ACTIVE '' Level VIH 70% VDD ACTIVE '0' Level VIL 0% VDD High Z See page 60 for tape and reel specifications. 47

50 48.V HCMOS SMD OSCILLATOR WITH STANDBY F0 SERIES.V Operation HCMOS Output Standby Function Tape and Reel (,000 pcs. STD) Pb Free Stability ±5PPM ±5PPM ±0PPM OPTIONS.05mm Height Max MODEL NUMBER SELECTION Model Number F0 F0R F5 F5R F6 F6R F8 Range (FO) Storage Temperature Range Supply Voltage (VDD) Input Current (IDD) 0.0 ~ 0.0 MHz 0.0+ ~.500 MHz.500+ ~ 00 MHz 00+ ~ MHz ~ MHz ~ MHz Output Symmetry (50% VDD) 0.0 ~ MHz ~ MHz Rise Time (0% ~ 90% VDD) (TR) 0.0 ~ MHz ~ MHz ~ MHz Fall Time (90% ~ 0% VDD) (TF) 0.0 ~ MHz ~ MHz ~ MHz Output Voltage (VOL) (TSTG) Operating Temperature (ºC) ELECTRICAL CHARACTERISTICS Output Current (VOH) (IOL) (IOH) Output Load Standby Current Start-up Time 0.0 ~ 00 MHz 00+ ~ MHz Output Disable Time Output Enable Time 0.0 ~ 00 MHz 00+ ~ MHz (HCMOS) (VIL 0.99V) (TS) Range (MHz) 0.0 ~ ~ ~ ~ ~ ~ ~ 00 MAX (unless otherwise noted) 0.0 ~ MHz -55ºC ~ +5ºC.V ± 0% ma 6mA 5mA 0mA 5mA ma 45% ~ 55% % ~ 60% 6nS 4nS ns 6nS 4nS ns 0% VDD 90% VDD Min ma Min -ma Min 5pF 0µA 5mS 0mS 50nS 5mS 0mS Inclusive of 5ºC tolerance, operating temperature range, input voltage change, load change, aging, shock, and vibration. An internal pullup resistor from pin to pin 4 allows active output if pin is left open. See page 0 for mechanical specifications, test circuits, and output waveform. Note: A 0.0µF bypass capacitor should be placed between VDD (Pin 4) and GND (Pin ) to minimize power supply line noise. All specifications subject to change without notice. Rev. 07/8/0 ENABLE / DISABLE FUNCTION INH (Pin ) OUTPUT (Pin ) OPEN ACTIVE '' Level VIH 70% VDD ACTIVE '0' Level VIL 0% VDD High Z See page 60 for tape and reel specifications.

51 .V TIGHT STABILITY HCMOS SMD OSCILLATOR WITH STANDBY F0 SERIES Tight Stability.V Operation HCMOS Output Standby Function Tape and Reel (,000 pcs. STD) Pb Free MODEL NUMBER SELECTION Model Number F8R F7 F7R F9 Stability ±0PPM ±5PPM ±5PPM ±0PPM Operating Temperature (ºC) Range (MHz).800 ~ ~ ~ ~ ELECTRICAL CHARACTERISTICS Range (FO) Storage Temperature Range Supply Voltage (VDD) Input Current (IDD) Output Symmetry (50% VDD) Rise Time (0% ~ 90% VDD) (TR) Fall Time (90% ~ 0% VDD) (TF) Output Voltage (VOL) Output Current (VOH) (IOL) (IOH) Output Load (HCMOS) Standby Current Start-up Time (TS) Output Disable Time Output Enable Time (TSTG) MAX (unless otherwise noted).800 ~ MHz -55ºC ~ +5ºC.V ± 5% ma 45% ~ 55% 5nS 5nS 0% VDD 90% VDD Min 8mA Min 4mA Min 5pF 50µA 5mS 50nS 5mS Inclusive of 5ºC tolerance, operating temperature range, input voltage change, load change, aging, shock, and vibration. An internal pullup resistor from pin to pin 4 allows active output if pin is left open. See page 0 for mechanical specifications, test circuits, and output waveform. Note: A 0.0µF bypass capacitor should be placed between VDD (Pin 4) and GND (Pin ) to minimize power supply line noise. All specifications subject to change without notice. Rev. 0/0/0 ENABLE / DISABLE FUNCTION INH (Pin ) OUTPUT (Pin ) OPEN ACTIVE '' Level VIH 70% VDD ACTIVE '0' Level VIL 0% VDD High Z See page 60 for tape and reel specifications. 49

52 5.0V HCMOS SMD OSCILLATOR F45 SERIES 5.0V Operation HCMOS/TTL Output Tri-State Enable/Disable Tape and Reel (,000 pcs. STD) Pb Free OPTIONS.05mm Height Max Standby Function (F) MODEL NUMBER SELECTION Model Number F45 F45R F FR F46 F46R F48 Stability ±5PPM ±5PPM ±0PPM Operating Temperature (ºC) Range (MHz).000 ~ ~ ~ ~ ~ ~ ~ ELECTRICAL CHARACTERISTICS Range (FO) Storage Temperature Range Supply Voltage (VDD) Input Current (IDD).000 ~ MHz ~ MHz ~ MHz ~ MHz Output Symmetry (50% VDD) Rise Time (0% ~ 90% VDD) (TR) Fall Time (90% ~ 0% VDD) (TF) Output Voltage (VOL) Output Current Output Load TTL HCMOS Start-up Time (VOH) (IOL) (IOH) (TS) Enable/Disable Time (TSTG) MAX (unless otherwise noted).000 ~ MHz -55ºC ~ +5ºC 5.0V ± 0% 5mA ma 60mA 7mA 45% ~ 55% 5nS 5nS 0% VDD 90% VDD Min 6mA Min -6mA Min 0TTL 50pF 0mS 00nS Inclusive of 5ºC tolerance, operating temperature range, input voltage change, load change, aging, shock, and vibration. An internal pullup resistor from pin to pin 4 allows active output if pin is left open. See page 0 for mechanical specifications, test circuits, and output waveform. Note: A 0.0µF bypass capacitor should be placed between VDD (Pin 4) and GND (Pin ) to minimize power supply line noise. All specifications subject to change without notice. Rev. 07/8/0 50 ENABLE / DISABLE FUNCTION INH (Pin ) OUTPUT (Pin ) OPEN ACTIVE '' Level VIH. V ACTIVE '0' Level VIL 0.8 V High Z See page 60 for tape and reel specifications.

53 .V LV-PECL OSCILLATOR WITH STANDBY F4600 SERIES.V Operation LV-PECL Output Complementary Outputs Standby Function Tape and Reel (,000 pcs. STD) Pb Free MODEL NUMBER SELECTION Model Number F4600 F4600R F4605 F4605R F4606 F4606R F4608 Stability ±5PPM ±5PPM ±0PPM Operating Temperature (ºC) Range (MHz) ~ ~ ~ ~ ~ ~ ~ ELECTRICAL CHARACTERISTICS Range (FO) Storage Temperature Range (TSTG) Supply Voltage (VDD) Input Current (IDD) Output Symmetry (50% Vp-p Level) Rise Time (0% ~ 80% Vp-p) (TR) Fall Time (80% ~ 0% Vp-p) (TF) Output Voltage Output Load Standby Current Start-up Time (VOL) (VOH) (TS) Output Disable Time Output Enable Time MAX (unless otherwise noted) ~ MHz -55ºC ~ +5ºC.V ± 5% 60mA % ~ 60% ns ns.7v.v Min 50Ω 0µA 0mS 00nS 0mS Inclusive of 5ºC tolerance, operating temperature range, input voltage change, load change, aging, shock, and vibration. An internal pullup resistor from pin to pin 4 allows active output if pin is left open. See page 0 for mechanical specifications, test circuits, and output waveform. Note: A 0.0µF bypass capacitor should be placed between VDD (Pin 6) and GND (Pin ) to minimize power supply line noise. All specifications subject to change without notice. Rev. 0/0/0 ENABLE / DISABLE FUNCTION INH (Pin ) OPEN '' Level VIH 70% VDD '0' Level VIL 0% VDD OUTPUT (Pin 4) ACTIVE ACTIVE High Z OUTPUT (Pin 5) ACTIVE ACTIVE High Z See page 60 for tape and reel specifications. 5

54 .V LV-PECL XO RFX00.V Operation High Performance Complementary Output Pb Free Applications include SONET / SDH / ATM / WAN / Gb Ethernet PRELIMINARY MODEL NUMBER SELECTION Model Number RFX00 RFX00R RFX05 RFX05R RFX06 RFX06R RFX08 Available s Storage Temperature Range Supply Voltage (VDD) Supply Current Rise Time (0% ~ 80% Vp-p) Fall Time (80% ~ 0% Vp-p) Symmetry (50% Vp-p) Output Voltage (VOL) (VOH) Stability ±5PPM ±5PPM ±0PPM ELECTRICAL CHARACTERISTICS Start-up Time (TS) PECL Skew (50% Vp-p) Jitter Integrated khz to 0MHz RMS Cycle-to-Cycle Operating Temperature (ºC) -0 ~ ~ ~ ~ ~ 700 MHz,.44 ~.5GHz -55ºC ~ +5ºC.V ± 0% 60mA 0.5nS 0.5nS 45/55.05V ~.65 V.55 ~.5 V 0mS 5pS <0.5pS ps 0 ps Inclusive of 5ºC tolerance, operating temperature range, input voltage change, load change, aging, shock, and vibration. All specifications subject to change without notice. Rev. 0/0/0 RFX00 Series Recommended Circuit LV-PECL OUT LV-PECL OUT 5 See page 60 for tape and reel specifications.

55 5.0V/.V PLASTIC HCMOS SMD CLOCK OSCILLATOR FSO SERIES 5.0V /.V Operation HCMOS/TTL Output Tri-State Enable/Disable Extended Temperature Range Tape and Reel (,000 pcs. STD) MODEL NUMBER SELECTION Model Number FSO- FSO-R FSO-5 FSO- FSO-R FSO-5 VDD (V) 5.0 ± 0.5. ± 0. Stability Operating Temperature (ºC) -0 ~ ~ ~ ~ +70 Range (MHz).000 ~ ~ ~ ~ ~ ~ ELECTRICAL CHARACTERISTICS Range (FO) Input Current (IDD).000 ~ MHz ~ MHz Output Symmetry (50% VDD) Rise Time (0% ~ 80% VDD) (TR).000 ~ MHz ~ MHz Fall Time (80% ~ 0% VDD) (TF).000 ~ MHz ~ MHz Output Voltage (VOL) Output Current Output Load (VOH) (IOL) (IOH) (TTL) (HCMOS) (TS) Start-up Time.000 ~ MHz ~ MHz FSO- Series FSO- Series MAX (unless otherwise noted).000 ~ MHz ma 5mA 8nS 7nS 8nS 7nS 0.4V 4.6V Min 6mA Min -6mA Min 0TTL 50pF 9mA 0mA % ~ 60% 4mS 0mS 6nS 6nS 6nS 6nS 0.4V.9V Min 4mA Min -4mA Min 0pF Enable/Disable Time 00nS Inclusive of 5ºC tolerance, operating temperature range, input voltage change, and load change. An internal pullup resistor from pin to pin 4 allows active output if pin is left open. The FSO- and FSO- models will also operate over -ºC ~ +85ºC, but with a stability of ±00 PPM. See page 0 for mechanical specifications, test circuits, and output waveform. Note: A 0.0µF bypass capacitor should be placed between VDD (Pin 4) and GND (Pin ) to minimize power supply line noise. All specifications subject to change without notice. Rev. 0/0/0 See page 60 for tape and reel specifications. ENABLE / DISABLE FUNCTION INH (Pin ) OUTPUT (Pin ) OPEN ACTIVE '' Level VIH.4 V ACTIVE '0' Level VIL 0.6 V High Z 5

56 5.0V PLASTIC HCMOS/TTL SMD OSCILLATOR KFO SERIES 5.0V Operation HCMOS/TTL Output Tri-State Enable/Disable Tape and Reel (,000 pcs. STD) OPTIONS.V Operation (KFO0AT) MODEL NUMBER SELECTION Model Number KFO90AT KFO90FT KFO95AT Stability Operating Temperature (ºC) Range (MHz).500 ~ ~ ~ ELECTRICAL CHARACTERISTICS Range (FO) Storage Temperature Range Supply Voltage (VDD) Input Current (IDD).500 ~ 00 MHz 00+ ~ MHz ~ MHz Output Symmetry (50% VDD).500 ~ MHz ~ MHz Rise Time (0% ~ 90% VDD) (TR) Fall Time (90% ~ 0% VDD) (TF) Output Voltage (VOL) Output Current (VOH) (IOL) (IOH) Output Load TTL HCMOS Start-up Time (TS) Enable/Disable Time (TSTG) MAX (unless otherwise noted).500 ~ MHz -55ºC ~ +5ºC 5.0V ± 0% 7mA 45mA 60mA 45% ~ 55% % ~ 60% 7nS 7nS 0% VDD 90% VDD Min 6mA Min -6mA Min 0TTL 50pF 0mS 00nS Inclusive of 5ºC tolerance, operating temperature range, input voltage change, load change, aging, shock, and vibration. An internal pullup resistor from pin to pin 4 allows active output if pin is left open. See page 0 for mechanical specifications, test circuits, and output waveform. Note: A 0.0µF bypass capacitor should be placed between VDD (Pin 4) and GND (Pin ) to minimize power supply line noise. All specifications subject to change without notice. Rev. 0/0/0 ENABLE / DISABLE FUNCTION INH (Pin ) OUTPUT (Pin ) OPEN ACTIVE '' Level VIH. V ACTIVE '0' Level VIL 0.8 V High Z 54 See page 60 for tape and reel specifications.

57 .V TRI-STATE ENABLE/DISABLE OSCILLATORS F5C-E / H5C-E.V Operation HCMOS Output Tri-State Enable/Disable 4-Pin DIP / 8-Pin DIP MODEL NUMBER SELECTION Model Number F5C-E F5C-ER F6C-E F6C-ER F7C-E F7C-ER F8C-E / / / / / / / H5C-E H5C-ER H6C-E H6C-ER H7C-E H7C-ER H8C-E Stability ±5PPM ±5PPM ±0PPM Operating Temperature (ºC) 0 ~ ~ ~ ~ +70 Range (MHz).000 ~ ~ ~ ~ ~ ~ ~ F5C-E H5C-E ELECTRICAL CHARACTERISTICS Range (FO) Storage Temperature Range (TSTG) Supply Voltage (VDD) Input Current (IDD).000 ~.000 MHz.000+ ~ MHz Output Symmetry (50% VDD) Rise Time (0% ~ 90% VDD) (TR) Fall Time (90% ~ 0% VDD) (TF) Output Voltage (VOL) Output Current (VOH) (IOL) (IOH) Output Load (HCMOS) Start-up Time (TS) Output Enable/Disable Time MAX (unless otherwise noted).000 ~ MHz -55ºC ~ +5ºC.V ± 0% 0mA ma % ~ 60% 0 ns 0 ns 0% VDD 90% VDD Min 8mA Min -8mA Min 5pF 0mS 00nS Inclusive of 5ºC tolerance, operating temperature range, input voltage change, load change, aging, shock, and vibration. An internal pullup resistor from pin to pin 4 allows active output if pin is left open. See page 0 for mechanical specifications, test circuits, and output waveform. All specifications subject to change without notice. Rev. 07//0 ENABLE / DISABLE FUNCTION INH (Pin ) OUTPUT (Pin 8) OPEN ACTIVE '' Level VIH. V ACTIVE '0' Level VIL 0.8 V High Z 55

58 5.0V HCMOS TRI-STATE ENABLE/DISABLE OSCILLATORS F5C-E / H5C-E 5.0V Operationg HCMOS/TTL Output Tri-State Enable/Disable 4-Pin DIP / 8-Pin DIP MODEL NUMBER SELECTION Model Number F5C-E F5C-ER F6C-E F6C-ER F7C-E F7C-ER F8C-E / / / / / / / H5C-E H5C-ER H6C-E H6C-ER H7C-E H7C-ER H8C-E Stability ±5PPM ±5PPM ±0PPM Operating Temperature (ºC) 0 ~ ~ ~ ~ +70 Range (MHz).000 ~ ~ ~ ~ ~ ~ ~ F5C-E H5C-E ELECTRICAL CHARACTERISTICS Range (FO) Storage Temperature Range (TSTG) Supply Voltage (VDD) Input Current (IDD).000 ~.000 MHz.000+ ~ MHz ~ MHz Output Symmetry (50% VDD).000 ~ MHz ~ MHz Rise Time (0% ~ 90% VDD) (TR).000 ~ MHz ~ MHz Fall Time (90% ~ 0% VDD) (TF).000 ~ MHz ~ MHz Output Voltage (VOL) Output Current Output Load TTL HCMOS Start-up Time (VOH) (IOL) (IOH) (TS) Output Enable/Disable Time MAX (unless otherwise noted).000 ~ MHz -55ºC ~ +5ºC 5.0V ± 0% ma 60mA 00mA 45% ~ 55% % ~ 60% 0 ns 6 ns 0 ns 6 ns 0% VDD 90% VDD Min 6mA Min -6mA Min 0TTL 50pF 0mS 00nS Inclusive of 5ºC tolerance, operating temperature range, input voltage change, load change, aging, shock, and vibration. An internal pullup resistor from pin to pin 4 allows active output if pin is left open. See page 0 for mechanical specifications, test circuits, and output waveform. All specifications subject to change without notice. Rev. 07//0 ENABLE / DISABLE FUNCTION INH (Pin ) OUTPUT (Pin 8) OPEN ACTIVE '' Level VIH. V ACTIVE '0' Level VIL 0.8 V High Z 56

59 5.0V TTL CLOCK OSCILLATOR F00E 5.0V Operation TTL Output 4-Pin DIP MODEL NUMBER SELECTION Model Number F00E F00ER F45E F45ER F44E F44ER Stability (STD) ±5PPM ±5PPM Operating Temperature (ºC) 0 ~ ~ ~ +70 Range (MHz).000 ~ ~ ~ ~ ~ ~ ELECTRICAL CHARACTERISTICS Range (FO) Storage Temperature Range (TSTG) Supply Voltage (VDD) Input Current (IDD).000 ~ MHz ~ MHz ~ MHz ~ MHz Output Symmetry (.4V Level).000 ~ MHz ~ MHz Rise Time (0.5V ~.4V) (TR).000 ~ MHz ~ MHz ~ MHz Fall Time (.4V ~ 0.5V) (TF).000 ~ MHz ~ MHz ~ MHz Output Voltage.000 ~ MHz (VOL) ~ MHz.000 ~ MHz (VOH) Output Current (IOL) (IOH) Output Load Start-up Time (TS).000 ~.500 MHz.500+ ~ MHz ~ MHz ~ MHz ~ MHz MAX (unless otherwise noted).000 ~ MHz -55ºC ~ +5ºC 5.0V ± 0% 5mA 0mA 70mA 80mA 45% ~ 55% % ~ 60% 0 ns 5 ns 4 ns 0 ns 5 ns 4 ns 0.4V 0.5V.4V Min 0mA Min -.0mA Min 0TTL 0mS 5mS 0mS 0mS 5mS Inclusive of 5ºC tolerance, operating temperature range, input voltage change, load change, aging, shock, and vibration. See page 0 for mechanical specifications, test circuits, and output waveform. All specifications subject to change without notice. Rev. 0/0/0 57

60 4-PIN DIP PECL OSCILLATOR F5L-4G 5.0V Operation PECL Output 0 KH Logic Output Complementary Output OPTIONS Single-Ended Output Pullup/Down Internal Resistors Various Pin Connections -5.V ECL Output MODEL NUMBER SELECTION Model Number F5L-4G F5L-4GR F6L-4G F6L-4GR F7L-4G F7L-4GR F8L-4G Stability ±5PPM ±5PPM ±0PPM Operating Temperature (ºC) Range (MHz) ~ ~ ~ ~ ~ ~ ~ ELECTRICAL CHARACTERISTICS Range (FO) Temperature Range Operating (TOPR) Storage (TSTG) Supply Voltage (VEE) Input Current (IDD) ~ MHz ~ MHz Output Symmetry (50% Vp-p Level) Rise Time (0% ~ 80%Vp-p) (TR) ~ MHz ~ MHz Fall Time (80% ~ 0%Vp-p) (TF) ~ MHz MAX (unless otherwise noted) ~ MHz -0ºC ~ +70ºC -55ºC ~ +5ºC 5.0V ± 0% 50mA 60mA % ~ 60% ns.5ns ns ~ MHz.5nS Output Voltage (VOL) +.05V ~ +.4V (VOH) +4.00V ~ +4.45V Output Load 50 Ω Overlap Time (50% Vp-p (Complementary Only)) 0.5nS Start-up Time (TS) 0mS Inclusive of 5ºC tolerance, operating temperature range, input voltage change, load change, aging, shock, and vibration. See page 0 for mechanical specifications, test circuits, and output waveform. All specifications subject to change without notice. Rev. 0/0/0 Pin Connection # Output #8 Output #7 GND #4 +5.0V 58

61 Fox Electronics Part Description Guide for Oscillators (####.######) Make Selection from Product Family in Fox Catalog or Foxonline.com For Example: F5C-E MHz Customer Fills In Stability Pick from Section A 4 Operating Temp 5 SMD Packaging 6 Fox Use 7/8 Value Added Section A Operating Temp. Range SMD Packaging Value Added Fox Production SMD Reel Quantities F0 Series K F50L Series K F5L Series K F50L Series K F400 Series K F4500 Series K F40 Series K F400 Series K F0 Series K F45 Series K F4600 Series K RFX00 K FSO Series K KFO Series K A ± 00ppm B ± 50 ppm C ± 0ppm D ± 5ppm E ± 0ppm F ± 5ppm G ± ppm H ± 0ppm J ± 7.5ppm K ± 7ppm L ± 5ppm M ± 4ppm N ± ppm P ±.5ppm R ± ppm S ±.5ppm T ± ppm U ± 0.5ppm A = 0º to +50ºC B = -0º to +50ºC C = 0º to +70ºC D = -0º to +60ºC E = -0º to +70ºC F = -0º to +70ºC Z = -5º to +75ºC G = -0º to +70ºC H = -0º to +75ºC J = -0º to +80ºC K = -0º to +85ºC L = -5º to +80ºC V = -5º to +85ºC M = -º to +85ºC 0 = Tape/Reel* 50 = = = 000 Tape Only = Tape Only M = Special Marking N = Cut Base S = Bulk Z = SMD tape Notes: Fox unique part numbers for non-standards are randomly generated based on the elements of the part description in a format: ### - - Random # ( is Fox unique part number). All combinations are not possible. * 0 = Tape/Reel assumes that no quantity per reel was specified: therefore, the Fox Production SMD Reel Quantities list applies. For any other quantities specified a broken reel charge will apply. 9 Custom Custom C = Custom Place attach drawing and/or additional electrical specs for our engineering department. 59

62 SURFACE MOUNT OSCILLATORS TAPE AND REEL SPECIFICATIONS TAPE SPECIFICATIONS (millimeters) MODEL F0 Series F50L Series F5L Series F50L Series F400 Series F4500 Series F40 Series F400 Series F0 Series F45 Series F4600 Series RFX00 FSO Series KFO Series A B C D E F STD QTY,000,000,000,000,000,000,000,000,000,000,000,000,000,000 Standard reel quantity. REEL SPECIFICATIONS (millimeters) MODEL F0 Series F50L Series F5L Series F50L Series F400 Series F4500 Series F40 Series F400 Series F0 Series F45 Series F4600 Series RFX00 FSO Series KFO Series G H I J K L M. 60

63 TCXOs, VCXOs AND OCXOs SELECTION GUIDE SURFACE MOUNT AND THRU-HOLE VCXOs PRODUCT FVS5AXT VCSAXT Series RFV00 VCXO-C / VCXO-D Stocking Std. Range Stability Pullability Temperature Range Key Features 00 ~ 500 MHz ±50 PPM ±00 PPM -0 C ~ +70 C 5.0 x.mm.v Operation HCMOS Output Enable/Disable.000 ~ MHz ±5 PPM ~ ±00 PPM ±00 PPM, ±50 PPM -0 C ~ +70 C -ºC ~ +85ºC (Option) 7.5 x 5mm.V Operation HCMOS Output Enable/Disable 6~700 MHz,.44~.5 GHz ±50, ±5, ±0 PPM ±00 PPM, ±50 PPM -0ºC ~ +70ºC -ºC ~ +85ºC (Option) 7.5 x 5mm.V LV-PECL VCXO Complementary Output.000 ~.500 MHz ±5 PPM ~ ±00 PPM ±00 PPM, ±00 PPM, ±50 PPM -0 C ~ +70 C -ºC ~ +85ºC (Option) 4-Pin DIP.V/5.0V Operation HCMOS/TTL Output Rugged Resistance Weld Catalog Pages Page 6 Page 6-64 Page 65 Page SURFACE MOUNT TCXOs PRODUCT FOX94 Series FOX07H FOXBE FOX80 Series Stocking Std. Range Stability Temperature Range Key Features.600 ~ MHz ±.5 PPM -0 C ~ +75 C 5 x.mm.5mm Height Max.0V Operation Clipped Sine Output VCTCXO ~ MHz ±.5 PPM -0 C ~ +75 C 7 x 5mm.9mm Height Max.0V Operation Clipped Sine Output VCTCXO.600 ~ MHz ±.5 PPM -0 C ~ +75 C 7 x 5mm mm Height Max.0V Operation Clipped Sine Output VCTCXO ~ 00 MHz ±.5 PPM -0 C ~ +75 C.4 x 9.6mm mm Height Max.0V / 5.0V Operation Clipped Sine Output TCXO or VCTCXO Catalog Pages Page 68 Page 69 Page 70 Page 7-7 THRU-HOLE TCXOs and OCXOs PRODUCT FOX78B FOX78 FTS50AH / FTS0AH Range Stability Temperature Range Key Features ~ MHz ±.5 PPM -0 C ~ +75 C 4-Pin DIP 5.0V /.0V Operation Clipped Sine Output TCXO or VCTCXO Up to 45 MHz Available ~ MHz ±.5 PPM -0 C ~ +75 C 4-Pin DIP 5.0V /.0V Operation HCMOS Output TCXO or VCTCXO Up to 45 MHz Available ~.000 MHz ±50 PPB 0 C ~ +70 C 4-Pin DIP 5.0V /.V Operation HCMOS/TTL Output Meets Stratum III Catalog Pages Page 7 Page 74 Page

64 .V LOW PROFILE SMD VCXO FVS5AXT.V Operation HCMOS Output Enable/Disable Tape and Reel (,000 pcs. STD) Pb Free ELECTRICAL CHARACTERISTICS Range (FO) Temperature Range Operating (TOPR) Storage (TSTG) Stability Pullability Supply Voltage (VDD) Control Voltage (VC) Input Current (IDD) 00 ~ MHz ~ 500 MHz Output Symmetry (50% VDD) Rise Time (0% ~ 80% VDD) (TR) Fall Time (80% ~ 0% VDD) (TF) Output Voltage (VOL) Output Current (VOH) (IOL) (IOH) Output Load Start-up Time Enable/Disable Time Linearity Modulation Bandwidth (HCMOS) (TS) MAX (unless otherwise noted) 00 ~ 500 MHz -0ºC ~ +70ºC -ºC ~ +85ºC.V ± 5%.65V ±.5V 5mA 5mA % ~ 60% 5nS 5nS 0% VDD 90% VDD Min 4.0mA Min -.0mA Min 5pF 0mS 50nS ±0% 0 khz Inclusive of 5ºC tolerance, operating temperature range, input voltage change, load change, aging, shock, vibration, and Vc =.65V. An internal pullup resistor from pin to pin 4 allows active output if pin is left open. Note: A 0.0µF bypass capacitor should be placed between VDD (Pin 5) and GND (Pin ) to minimize power supply line noise. All specifications subject to change without notice. Rev. 0/0/0 See page 79 for tape and reel specifications. ENABLE / DISABLE FUNCTION INH (Pin 6) OUTPUT (Pin 4) OPEN ACTIVE '' Level VIH 70% VDD ACTIVE '0' Level VIL 0% VDD High Z 6

65 .V LOW PROFILE SMD VCXO VCS5AXT.V Operation Stocking Standard HCMOS Output Enable/Disable Tape and Reel (,000 pcs. STD) Pb Free DISTRIBUTOR STOCKING ITEMS Model Number VCS5AXT-0496 VCS5AXT-08 VCS5AXT-8 VCS5AXT-6 VCS5AXT-70 VCS5AXT-5 VCS5AXT-447 (MHz) ELECTRICAL CHARACTERISTICS Range (FO) Temperature Range Operating (TOPR) Storage (TSTG) Stability Pullability Supply Voltage (VDD) Control Voltage (VC) Input Current (IDD).000 ~ MHz ~ MHz ~ MHz Output Symmetry (50% VDD) Rise Time (0% ~ 90% VDD) (TR) Fall Time (90% ~ 0% VDD) (TF) Output Voltage (VOL) Output Current (VOH) (IOL) (IOH) Output Load Start-up Time Enable/Disable Time Linearity Modulation Bandwidth (HCMOS) (TS) MAX (unless otherwise noted).000 ~ MHz -0ºC ~ +70ºC -ºC ~ +85ºC.V ± 0%.65V ±.5V 5mA 5mA 50mA % ~ 60% 5nS 5nS 0% VDD 90% VDD Min 4.0mA Min -.0mA Min 5pF 0mS 50nS ±0% 0 khz Custom specifications from to MHz available on an individual inquiry basis. An internal pullup resistor from pin to pin 4 allows active output if pin is left open. Other temperature ranges, stabilities, and pullabilities available. See Page 56. Note: A 0.0µF bypass capacitor should be placed between VDD (Pin 6) and GND (Pin ) to minimize power supply line noise. All specifications subject to change without notice. Rev. 0/0/0 ENABLE / DISABLE FUNCTION INH (Pin ) OUTPUT (Pin 4) OPEN ACTIVE '' Level VIH 70% VDD ACTIVE '0' Level VIL 0% VDD High Z See page 79 for tape and reel specifications. 6

66 .V LOW PROFILE SMD VCXO VCSAXT SERIES OPTIONS.V Operation Many Stability/Pullability Options HCMOS Output -ºC ~ +85ºC Option ('R' Version) Enable/Disable Tape and Reel (,000 pcs. STD) Pb Free 64 MODEL NUMBER SELECTION Model Number VCSAXT VCSAXTR VCS5AXT VCS5AXTR VCSAXT VCSAXTR VCS5AXT VCS5AXTR VCS0AXT VCS0AXTR Stability ±5PPM ±5PPM ±5PPM ±5PPM Range (FO) Storage Temperature Range Supply Voltage (VDD) Control Voltage (VC) Input Current (IDD).000 ~ MHz ~ MHz ~ MHz Output Symmetry (50% VDD) Rise Time (0% ~ 90% VDD) (TR) Fall Time (90% ~ 0% VDD) (TF) Output Voltage (VOL) Output Current Output Load Start-up Time Enable/Disable Time Linearity (VOH) (IOL) (IOH) (HCMOS) (TS) Pullability (TSTG) Operating Temperature (ºC) ELECTRICAL CHARACTERISTICS Range (MHz).000 ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ MAX (unless otherwise noted).000 ~ MHz -ºC ~ +85ºC.V ± 0%.65V ±.5V 5mA 5mA 50mA % ~ 60% 5nS 5nS 0% VDD 90% VDD Min 4.0mA Min -.0mA Min 5pF 0mS 50nS ±0% Modulation Bandwidth 0 khz Inclusive of 5ºC tolerance, operating temperature range, input voltage change, load change, aging, shock, vibration, and Vc =.65V. An internal pullup resistor from pin to pin 4 allows active output if pin is left open. Available on an individual inquiry basis. 4 Custom specifications from to MHz available on an individual inquiry basis. Note: A 0.0µF bypass capacitor should be placed between VDD (Pin 6) and GND (Pin ) to minimize power supply line noise. Note: An alternate pin connection with E/D on pin #5 is available. All specifications subject to change without notice. Rev. 0/0/0 ENABLE / DISABLE FUNCTION INH (Pin ) OUTPUT (Pin 4) OPEN ACTIVE '' Level VIH 70% VDD ACTIVE '0' Level VIL 0% VDD High Z See page 79 for tape and reel specifications.

67 .V LV-PECL VCXO RFV00.V Operation High Performance Complementary Output Pb Free Applications include SONET / SDH / ATM / WAN PRELIMINARY MODEL NUMBER SELECTION Model Number RFV50 RFV50R RFV5 RFV5R RFV0 Stability ±5PPM ±5PPM ±0PPM Pullability Operating Temperature (ºC) -0 ~ ~ ~ +70 ELECTRICAL CHARACTERISTICS Available s Storage Temperature Range Supply Voltage (VDD) Supply Current Rise Time (0% ~ 80% Vp-p) Fall Time (80% ~ 0% Vp-p) Symmetry (50% Vp-p) Output Voltage (VOL) (VOH) Start-up Time (TS) Linearity Modulation Bandwidth PECL Skew (50% Vp-p) Jitter Integrated khz to 0MHz RMS Cycle-to-Cycle 6 ~ 700 MHz,.44 ~.5GHz -55ºC ~ +5ºC.V ± 0% 60mA 0.5nS 0.5nS 45/55.05V ~.65 V.55 ~.5 V 0mS ± 0% >0kHz 5pS <0.5pS ps 0 ps Inclusive of 5ºC tolerance, operating temperature range, input voltage change, load change, aging, shock, and vibration. All specifications subject to change without notice. Rev. 0/0/0 RFV00 Series Recommended Circuit LV-PECL OUT LV-PECL OUT See page 79 for tape and reel specifications. 65

68 .V THRU-HOLE VOLTAGE CONTROLLED CRYSTAL OSCILLATOR VCXO-D.V Operation HCMOS Output Low Power Consumption Rugged Resistance Weld OPTIONS Many Stability/Pullability Options -ºC ~ +85ºC Option ('R' Version) / Size Version Available MODEL NUMBER SELECTION Model Number VCXO-D VCXO-DR VCXO-D4 VCXO-D4R VCXO-D7 VCXO-D7R VCXO-D8 VCXO-D8R Stability ±5PPM ±5PPM ±5PPM ±5PPM Pullability Operating Temperature (ºC) Range (MHz).000 ~ ~ ~ ~ ~ ~ ~ ~.500 ELECTRICAL CHARACTERISTICS Range (FO) Storage Temperature Range Supply Voltage (VDD) Control Voltage (VC) Input Current (IDD).000 ~ MHz ~ MHz ~.500 MHz Output Symmetry (50% VDD) Rise Time (0% ~ 90% VDD) (TR) Fall Time (90% ~ 0% VDD) (TF) Output Voltage (VOL) Output Current (VOH) (IOL) (IOH) Output Load (HCMOS) Start-up Time (TS) Linearity (TSTG) MAX (unless otherwise noted).000 ~.500 MHz -55ºC ~ +5ºC.V ± 5%.65V ±.65V 0mA 5mA 5mA % ~ 60% 0nS 0nS 0% VDD 90% VDD Min 4.0mA Min -.0mA Min 5pF 0mS ±0% Inclusive of 5ºC tolerance, operating temperature range, input voltage change, load change, aging, shock, vibration, and Vc =.65V. Higher frequencies available on an individual inquiry basis. All specifications subject to change without notice. Rev. 0/0/0 66

69 5.0V THRU-HOLE VOLTAGE CONTROLLED CRYSTAL OSCILLATOR VCXO-C 5.0V Operation HCMOS/TTL Output Rugged Resistance Weld OPTIONS Many Stability/Pullability Options -ºC ~ +85ºC Option ('R' Version) / Size Version Available MODEL NUMBER SELECTION Model Number VCXO-C VCXO-CR VCXO-C VCXO-CR VCXO-C4 VCXO-C4R VCXO-C7 VCXO-C7R VCXO-C8 VCXO-C8R Stability ±5PPM ±5PPM ±5PPM ±5PPM Pullability ±00PPM ±00PPM Operating Temperature (ºC) Range (MHz).000 ~ ~ ~ ~ ~ ~ ~ ~ ~ ~.000 ELECTRICAL CHARACTERISTICS Range (FO) Storage Temperature Range Supply Voltage (VDD) Control Voltage (VC) Input Current (IDD).000 ~ MHz ~ MHz ~.000 MHz Output Symmetry (50% VDD) Rise Time (0% ~ 90% VDD) (TR) Fall Time (90% ~ 0% VDD) (TF) Output Voltage (VOL) Output Current (VOH) (IOL) (IOH) (TSTG) Output Load TTL HCMOS Start-up Time (TS) Phase Noise Fo + khz Fo + 0 khz Stability vs. Voltage(VDD = 5.0V ± 5%) Linearity Modulation MAX (unless otherwise noted).000 ~.000 MHz -ºC ~ +85ºC 5.0V ± 5%.5V ± V 5mA 0mA 0mA % ~ 60% 0nS 0nS 0% VDD 90% VDD Min.mA Min -0.mA Min 8 LSTTL 5pF 0mS -5 dbc/hz -0 dbc/hz ±.0PPM ±0% 0kHz Inclusive of 5ºC tolerance, operating temperature range, input voltage change, load change, aging, shock, vibration, and Vc =.5V. Higher frequencies available on an individual inquiry basis. All specifications subject to change without notice. Rev. 0/0/0 67

70 .0V ULTRA MINIATURE SMD TCXO/VCTCXO FOX94 SERIES OPTIONS.0V Operation Voltage Control (FOX94E).5mm Height Max Voltages of.8v ~.V Clipped Sine Output Low Cost Tape and Reel (,000 pcs. STD) DEVELOPED FREQUENCIES.600 MHz.800 MHz.000 MHz.84 MHz 4.0 MHz MHz MHz ELECTRICAL CHARACTERISTICS Range (FO) Temperature Range Operating (TOPR) Storage (TSTG) Supply Voltage (VDD) Input Current (IDD) Initial Tolerance 5ºC ± ºC) (Vc =.5V) Stability Over Temperature Range Over Supply Voltage Change (.0V ± 5%) Over Load Change (0Ω ± 0% // 0pF ±0%) Output Waveform (Clipped Sine) Peak-to-Peak Level (Vp-p) Output Load Aging per year Pullability (Vc =.5 ±.0V) 9.00 MHz 9.4 MHz MHz MHz MHz MHz MAX (unless otherwise noted).600 ~ MHz -0ºC ~ +75ºC -ºC ~ +85ºC.0V ± 5% ma ±0.5PPM ±.5PPM ±0.PPM ±0.PPM 0.8V Min 0kΩ // 0pF ±.0PPM ±5.0 ~ ±5.0 PPM Undeveloped frequencies available on an inquiry basis. For proper operation, a control voltage (Vc) must be applied to pin on VCTCXOs. All specifications subject to change without notice. Rev. 0/0/0 68 See page 79 for tape and reel specifications.

71 .0V SMD TCXO/VCTCXO FOX07H.0V Operation.9mm Height Max Clipped Sine Output Tape and Reel (,000 pcs. STD) ELECTRICAL CHARACTERISTICS Range (FO) Temperature Range Operating (TOPR) Storage (TSTG) Supply Voltage (VDD) Input Current (IDD) Stability Over Temperature Range Over Supply Voltage Change (.0V ± 5%) Over Load Change (0ς // 0pF) Voltage Control (.5V ±.0V) Output Waveform (Clipped Sine) Peak-to-Peak Level (Vp-p) Output Load Aging per year For proper operation, a control voltage (Vc) must be applied to pin. All specifications subject to change without notice. Rev. 0/0/0 MAX (unless otherwise noted) ~ MHz -0ºC ~ +75ºC -ºC ~ +85ºC.0V ± 5% ma ±.5PPM ±0.PPM ±0.PPM ±5.0 ~ ±5.0PPM 0.8V Min 0kΩ // 0pF ±.0PPM See page 79 for tape and reel specifications. 69

72 .0V LOW PROFILE SMD VCTCXO FOXBE.0V Operation mm Height Max Clipped Sine Output Tape and Reel (,000 pcs. STD) ELECTRICAL CHARACTERISTICS Range (FO) Temperature Range Operating Storage Supply Voltage Input Current (TOPR) (TSTG) (VDD) (IDD) Stability Over Temperature Range Over Supply Voltage Change (.0V ± 5%) Over Load Change (0KΩ±0% // 0pF±0%) Initial 5ºC Vc =.5V MAX (unless otherwise noted).600 ~ MHz -0ºC ~ +75ºC -ºC ~ +85ºC.0V ± 5% ma ±.5PPM ±0.PPM ±0.PPM ±0.5PPM Output Waveform (Clipped Sine) Peak-to-Peak Level (Vp-p) 0.8V Min Output Load 0KΩ // 0pF Pullability (.5V ±.0V) ±5.0 ~ ±5.0PPM Aging per year ±.0PPM For proper operation, a control voltage (Vc) must be applied to pin. All specifications subject to change without notice. Rev. 0/0/0 70 See page 79 for tape and reel specifications.

73 .0V LOW PROFILE VCTCXO FOX80BE.0V Operation mm Height Max Clipped Sine Output Low Cost Stocking Standard Tape and Reel (,000 pcs. STD) DISTRIBUTOR STOCKING ITEMS Model Number FOX80BE-00 FOX80BE-8 FOX80BE-44 FOX80BE-60 FOX80BE-9 (MHz) ELECTRICAL CHARACTERISTICS Range (FO) Temperature Range Operating (TOPR) Storage (TSTG) Tolerance Vc =.5V Supply Voltage (VDD) Input Current (IDD) Stability Over Temperature Range Over Supply Voltage Change (.0V ± 5%) Over Load Change (0Ω ± 0% // 0pF ± 0%) Voltage Control (.5V ±.0V) Output Waveform (Clipped Sine) Peak-to-Peak Level (Vp-p) ~ ~ 00 Output Load Adjustment (Internal Trimmer) Aging per year MAX (unless otherwise noted) ~ 00 MHz -0ºC ~ +75ºC -5ºC ~ +85ºC ±0.5PPM.0V ± 5% ma ±.5PPM ±0.PPM ±0.PPM ±.0PPM Min 0.8V Min 0.7V Min 0KΩ // 0pF ±.0PPM ±0.8PPM For proper operation, a control voltage (Vc) must be applied to pin on VCTCXOs. All specifications subject to change without notice. Rev. 0/0/0 See page 79 for tape and reel specifications. 7

74 .0V/5.0V LOW PROFILE TCXO FOX80 SERIES mm Height Max Low Cost Clipped Sine Output Tape and Reel (,000 pcs. STD) OPTIONS 'A' Version - 5.0V 'B' Version -.0V VCTCXO - AE/BE Version VCTCXO - AH/BH Version (trimmerless) ELECTRICAL CHARACTERISTICS Range (FO) Temperature Range Operating (TOPR) Storage (TSTG) Initial Tolerance (@5ºC) Vc =.5V (A Series) FOX80A/B/AE/BE Vc =.5V (B Series) FOX80AH/BH Supply Voltage (VDD) A Version B Version Input Current (IDD) Stability Over Temperature Range Over Supply Voltage Change (VDD ± 5%) Over Load Change (0Ω ± 0% // 0pF ± 0%) Output Waveform (Clipped Sine) Peak-to-Peak Level (Vp-p) A Version: ~ 00 MHz B Version: ~ 4.0 MHz B Version: 4.0+ ~ 00 MHz Output Load Adjustment (Internal Trimmer) FOX80A/B/AE/BE FOX80AH/BH Voltage Control Option (VCTCXO) A Version (Vc=.5±V) FOX80A/B B Version (Vc=.5±.0V) FOX80AE/BE FOX80AH/BH Aging per year MAX (unless otherwise noted) ~ 00 MHz -0ºC ~ +75ºC -5ºC ~ +80ºC ±0.5PPM ±PPM 5.0V ± 5%.0V ± 5% ma ±.5PPM ±0.PPM ±0.PPM.0V Min 0.8V Min 0.7V Min 0KΩ // 0pF ±.0PPM Trimmerless None ±5.0PPM Min ±8.0PPM Min ~ 00 ±0.8PPM For proper operation, a control voltage (Vc) must be applied to pin on VCTCXOs. All specifications subject to change without notice. Rev. 0/0/0 7 See page 79 for tape and reel specifications.

75 5.0V THRU-HOLE TCXO/VCTCXO FOX78B 5.0V Operation Clipped Sine Output Adjustable 4-Pin DIP OPTIONS VCTCXO - FOX78C Higher Frequencies.0V Operation ELECTRICAL CHARACTERISTICS Range (FO) Initial 5ºC Stability Over Temperature Range Over Supply Voltage Change (5.0V ± 5%) Over Load Change (0KΩ ± 0% // 0pF 0%) Temperature Range Operating (TOPR) Storage (TSTG) Supply Voltage (VDD) Output Waveform (Clipped Sine) Peak-to-Peak Level (Vp-p) Input Current (IDD) Output Load 5ºC; per year ~ MHz MHz Adjustment (Internal Trimmer) MAX (unless otherwise noted) ~ MHz ±.0PPM ±.5PPM ±0.PPM ±0.PPM -0ºC ~ +75ºC -ºC ~ +80ºC 5.0V ± 5%.0V Min ma 0KΩ // 0pF ±.0PPM ±PPM ±.0PPM Min Frequencies from MHz to MHz available on an individual inquiry basis. VCTCXO version (FOX78C) available on an individual inquiry basis to custom customer specifications. All specifications subject to change without notice. Rev. 0/0/0 7

76 5.0V THRU-HOLE TCXO/VCTCXO FOX78 5.0V Operation HCMOS Output Adjustable 4-Pin DIP OPTIONS VCTCXO - FOX78C Higher Frequencies Other Voltages Available ELECTRICAL CHARACTERISTICS Range (FO) Initial 5ºC Stability Over Temperature Range Over Supply Voltage Change (5.0V ± 5%) Temperature Range Operating (TOPR) Storage (TSTG) Supply Voltage (VDD) Input Current (IDD) ~ MHz Output Symmetry (50% VDD) Rise Time (0% ~ 90% VDD) (TR) Fall Time (90% ~ 0% VDD) (TF) Output Voltage (VOL) Output Current Output Load Start-up Time (VOH) (IOL) (IOH) (HCMOS) (TS) MAX (unless otherwise noted) ~ MHz ±.0PPM ±.5PPM ±0.PPM -0ºC ~ +75ºC -ºC ~ +80ºC 5.0V ± 5% 5mA % ~ 60% 5nS 5nS 0% VDD 90% VDD Min 4.0mA Min -.0mA Min 5pF 0mS Frequencies from MHz to MHz available on an individual inquiry basis. VCTCXO version (FOX78C) available on an individual inquiry basis to custom customer specifications. All specifications subject to change without notice. Rev. 0/0/0 74

77 OVEN CONTROLLED CRYSTAL OSCILLATORS (OCXO) GENERAL DESIGN SPECIFICATIONS PRELIMINARY As Fox ventures into the OCXO product offerings, we have established a General Specification Matrix of products we currently have in development. In addition to the matrix, we can develop new OCXOs based on customer needs. To discuss your OCXO requirements, contact the Fox Customer Technology Center (CTC) referenced on the inside covers of this catalog. 4-PIN DIP EURO PACKAGE Range Stability Temperature Range Supply Voltages Output Type ~ MHz ±50 ~ ±750 PPB 0ºC ~ +70ºC, -ºC ~ +75ºC.V, 5.0V HCMOS, Sine Wave Range Stability Temperature Range Supply Voltages Output Type ~ MHz ±4 ~ ±0 PPB 0ºC ~ +50ºC, -ºC ~ +75ºC 5.0V, V HCMOS, Sine Wave 8. x 8.mm PACKAGE 50.8 x 50.8mm PACKAGE Range Stability Temperature Range Supply Voltages Output Type ~ MHz ±4 ~ ±0 PPB 0ºC ~ +50ºC, -ºC ~ +75ºC 5.0V, V HCMOS, Sine Wave * Current Capabilities not yet in production. * All specifications to be confirmed at prototype. Rev. 05/0/0 Range Stability Temperature Range Supply Voltages Output Type ~ MHz ±4 ~ ±0 PPB 0ºC ~ +50ºC, -ºC ~ +75ºC 5.0V, V HCMOS, Sine Wave 75

78 STRATUM III 4-PIN DIP OVEN CONTROLLED CRYSTAL OSCILLATOR FTS50AH Meets Stratum III 5.0V Operation HCMOS Output 4-Pin DIP ELECTRICAL CHARACTERISTICS Range (FO) Temperature Range MAX (unless otherwise noted) ~.000 MHz Operating (TOPR) 0ºC ~ +70ºC Storage (TSTG) -ºC ~ +85ºC Supply Voltage 5V ±0.V Output Type HCMOS Pullability 4 PPM Min Control Voltage 0.5V ~ 5.0V Stabilities ±4.6 PPM All effects for 0 years vs. Temperature ±50 PPB vs. Voltage ±00 PPB Holdover Aging (4 hours) ±0 PPB Holdover Stability ±70 PPB Load Stability ±0 PPB Long Term Aging st Year ±0.75 PPM Aging 0 Years ±4. PPM Warm-up to within ±4.6 PPM Minutes Warm-up Power <.5 Watts Operating Power (Typical).0W ~ 0ºC, +5ºC Phase Noise Hz - 0 khz All specifications subject to change without notice. Rev. 0/0/0 76

79 STRATUM III 4-PIN DIP OVEN CONTROLLED CRYSTAL OSCILLATOR FTS0AH Meets Stratum III.V Operation HCMOS Output 4-Pin DIP ELECTRICAL CHARACTERISTICS Range (FO) Temperature Range MAX (unless otherwise noted) ~.000 MHz Operating (TOPR) 0ºC ~ +70ºC Storage (TSTG) -ºC ~ +85ºC Supply Voltage.V ±0.6V Output Type HCMOS Pullability 4 PPM Min Control Voltage 0.0V ~.V Stabilities ±4.6 PPM All effects for 0 years vs. Temperature ±50 PPB vs. Voltage ±00 PPB Typ. Holdover Aging (4 hours) ±0 PPB Holdover Stability ±70 PPB Load Stability ±0 PPB Long Term Aging st Year ±0.75 PPM Aging 0 Years ±4. PPM Warm-up to within ±4.6 PPM Minutes Warm-up Power <.5 Watts Operating Power 0ºC, +5ºC Phase Noise Hz - 0 khz All specifications subject to change without notice. Rev. 0/0/0 77

80 Fox Electronics Part Description Guide for TCXOs/VCXOs (####.######) Make Selection from Product Family in Fox Catalog or Foxonline.com For Example: Fox80B MHz Customer Fills In Stability Pick from Section A 4 Operating Temp 5/6 Fox Use 7 SMD Packaging 8 Fox Use 9/0 Value Added Fox Production SMD Reel Quantities FVS5AXT K VCS5AXT K VCSAXT Series K RFV00 K FOX94 Series K FOX07H K FOXBE K FOX80BE K FOX80 Series K Section A A ± 00ppm B ± 50 ppm C ± 0ppm D ± 5ppm E ± 0ppm F ± 5ppm G ± ppm H ± 0ppm J ± 7.5ppm K ± 7ppm L ± 5ppm M ± 4ppm N ± ppm P ±.5ppm R ± ppm S ±.5ppm T ± ppm U ± 0.5ppm Operating Temp. Range A = 0º to +50ºC B = -0º to +50ºC C = 0º to +70ºC D = -0º to +60ºC E = -0º to +70ºC F = -0º to +70ºC Z = -5º to +75ºC G = -0º to +70ºC H = -0º to +75ºC J = -0º to +80ºC K = -0º to +85ºC L = -5º to +80ºC V = -5º to +85ºC M = -º to +85ºC SMD Packaging 0 = Tape/Reel* 50 = = = 000 Tape Only = Tape Only Value Added M = Special Marking N = Cut Base S = Bulk Z = SMD tape Notes: Fox unique part numbers for non-standards are randomly generated based on the elements of the part description in a format: ### - - Random # ( is Fox unique part number). All combinations are not possible. * 0 = Tape/Reel assumes that no quantity per reel was specified: therefore, the Fox Production SMD Reel Quantities list applies. For any other quantities specified a broken reel charge will apply. Custom Custom C = Custom Place attach drawing and/or additional electrical specs for our engineering department. 78

81 SURFACE MOUNT VCXOs and TCXOs TAPE AND REEL SPECIFICATIONS TAPE SPECIFICATIONS (millimeters) MODEL FVS5AXT VCSAXT Series RFV00 FOX94 Series FOX07H FOXBE FOX80 Series A B C D E F STD QTY,000,000,000,000,000,000,000 Standard reel quantity. REEL SPECIFICATIONS (millimeters) MODEL FVS5AXT VCSAXT Series RFV00 FOX94 Series FOX07H FOXBE FOX80 Series G H I 5 J K L M.6 79

82 MONOLITHIC CRYSTAL FILTERS Fox filters offer excellent features such as sharp cut off characteristics, low loss and high stability over a wide temperature range which are superior to LC Filters and Ceramic Filters. The basic building block for all custom built Fox filters is the twopole monolithic filter available in standard package as shown. Twopole monolithic filters are cascaded to produce four, six and eight pole filter responses with the addition of coupling capacitors between two-pole sections. Standard Fox filters are available with center frequencies from 0.7 MHz to 90 MHz, and from two to eight poles. For custom made filters, please specify the following: Holder Size Insertion Loss Ripple Nominal Attenuation Terminating Impedance Pass Bandwidth Spurious Response Operating Temp. Range Note: 45F Series MHz fundamental is a special filter designed for mobile radio and cellular phone applications. MULTI-POLE PACKAGE DIMENSIONS CASE TYPE C D CN L (5.0) 0.78 (8.5) 0.4 (.0) W 0.47 () 0.47 () 0.5 (8.5) H 0.59 (5.0) 0.59 (5.0) 0.45 (.5) A 0.54 (9.0) 0.5 (.5) 0.9 (7.4) B 0.97 (5.0) 0.97 (5.0) 0.57 (4.0) 80

83 STANDARD MONOLITHIC CRYSTAL FILTERS Type MHz Pole Case Pass Band db khz db Stop Band khz db khz Ripple Max db Loss Max db Attenuation Guaranteed db to ±khz Terminating Impedance ohms/pf 0M7A 0M7B 0M7C 0M7D 0MA 0MB 0MC 0MD 0M5A 0M5B 0M5C 0M5D 0M0A 0M0B 6M5A 6M5B 6M5C 6M5D M7A M7B M7C M7D MA MB MC MD M5A M5B M5C M5D M0A M0B M0A M0B 45F5A 45F5B 45F0A 45F0B 45F0A 45F0B 45M5A 45M5B 45M0A 45M0B 70M5A 70M5B 70M0A 70M0B U 49Ux C D 49U 49Ux C D 49U 49Ux C D 49U 49Ux 49U 49Ux C D HC80 HC80x CN CN HC80 HC80x CN CN HC80 HC80x CN CN HC80 HC80x HC80 HC80x HC80 HC80x HC80 HC80x HC80 HC80x HC80 HC80x HC80 HC80x HC80 HC80x HC80 HC80x 6 6 ±.75 ±.75 ±.75 ±.75 ±6.0 ±6.0 ±6.0 ±6.0 ±7.5 ±7.5 ±7.5 ±7.5 ±0.0 ±0.0 ±7.5 ±7.5 ±7.5 ±7.5 ±.75 ±.75 ±.75 ±.75 ±6.0 ±6.0 ±6.0 ±6.0 ±7.5 ±7.5 ±7.5 ±7.5 ±0.0 ±0.0 ±5.0 ±5.0 ±7.5 ±7.5 ±0.0 ±0.0 ±5.0 ±5.0 ±7.5 ±7.5 ±0.0 ±0.0 ±7.5 ±7.5 ±0.0 ± ±8 ±4 ±8.75 ±8.75 ±5 ±0 ±4 ±4 ±5 ±5 ±7.5 ±7.5 ±4 ±4 ±5 ±5 ±7.5 ±7.5 ±8 ±4 ±8.75 ±9.0 ±5 ±0 ±4 ±4 ±5 ±5 ±7.5 ±7.5 ±4 All specifications subject to change without notice. Rev. 05/0/0 Note: Operating Temperature -0 C to +70 C ±4 ±45 ±50 ±5 ±5 ±4 ±48 ±50 ±60 ±8 ±0 ±0 ± ±0 ±5 ± ± FOX ELECTRONICS ±.5 ±.5 ±0 ±0 ±5 ±5 ±5 ±5 ±.5 ±.5 ±0 ±0 ±5 ± ~ ~ ~ ~ -000 ±.5 ~ ±00 ±.5 ~ ± ~ ~ ~ ~ -000 ±0 ~ ±00 ±0 ~ ± ~ ~ ~ ~ -000 ±5 ~ ±00 ±5 ~ ± ~ ~ ~ ~ ~ ~ ~ ~ -000 ±5 ~ ±00 ±5 ~ ± ~ ~ ~ ~ -000 ±.5 ~ ±00 ±.5 ~ ± ~ ~ ~ ~ ±0 ~ ±00 ±0 ~ ± ~ ~ ~ ~ -000 ±5 ~ ±00 ±5 ~ ± ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ K//6.0.8K//5.0 Cc = pf.8k//5.0.8k//5.0.k//.5.k//.5 Cc = 6pF.K//.K//.0K//.0K// Cc = 5pF.K//.5.K//.5.9K//.0.9K//.0 Cc = pf.8k//.8k//.5 Cc = 7.5pF.8K//.5.8K//.5 850// //5.0 Cc = 6pF 850// //5.0.K//.0.K//.5 Cc = 0.5pF.K//.5.K//.5.5K//.5K// Cc = 8pF.5K//.5K//.8K//.5.8K//.5 Cc = 5pF.0K//0.5.0K//-0.5 Cc = pf 650// //.5 Cc = 9pF 700//.5 700//.5 Cc = 6.5pF 800//.5 800//.0 Cc = 5pF 4K//-.0 4K//-.0 Cc = -pf 5K//-.0 5K//-.0 Cc = -.5pF K//-.0 K//-.0 Cc = -pf.5k//-.0.5k//-.0 Cc = -pf 7 FILTERS

84 Fox Electronics Part Description Guide for Filters Make Selection from Product Family in Fox Catalog or Foxonline.com For Example: 6M5C (####.######) MHz Customer Fills In Operating Temp 4 SMD Packaging 5 Fox Use 6/7 Value Added Operating Temp. Range SMD Packaging Value Added A = 0º to +50ºC B = -0º to +50ºC C = 0º to +70ºC D = -0º to +60ºC E = -0º to +70ºC F = -0º to +70ºC Z = -5º to +75ºC G = -0º to +70ºC H = -0º to +75ºC J = -0º to +80ºC K = -0º to +85ºC L = -5º to +80ºC V = -5º to +85ºC M = -º to +85ºC 0 = Tape/Reel* 50 = = = 000 Tape Only = Tape Only M = Special Marking N = Cut Base S = Bulk Z = SMD tape Notes: Fox unique part numbers for non-standards are randomly generated based on the elements of the part description in a format: ### - - Random # ( is Fox unique part number). * 0 = Tape/Reel assumes that no quantity per reel was specified: therefore, the Fox Production SMD Reel Quantities list applies. For any other quantities specified a broken reel charge will apply. 8 Custom Custom C = Custom If standard Fox Part is not applicable, attach full specifications/drawings FOX ELECTRONICS

85 QUARTZ CRYSTAL THEORY OF OPERATION Quartz crystal units serve as the controlling element of oscillator circuits by conversion of mechanical vibrations to electrical current at a specific frequency. This is accomplished by means of the "Piezoelectric" effect. Piezoelectricity is electricity created by pressure. In a piezoelectric material, the application of mechanical pressure along an axis will result in the creation of an electrical charge along an axis at right angles to the first. In some materials, the obverse piezoelectric effect is found, which means that the imposition of an electric field on the ends of an axis will result in a mechanical deflection along an axis at right angles to the first. Quartz is uniquely suited, in terms of mechanical, electrical and chemical properties, for the manufacture of frequency control devices. Quartz crystal units which oscillate within certain frequency and temperature ranges have been developed over the years. Figure shows the location of specific elements within a quartz stone. Figure Figure Of the various elements, the "AT" cut has become the most popular as it is available at relatively high frequencies, exhibits excellent frequency vs temperature stability and is widely available at reasonable cost. The frequency vs. temperature capabilities of the "AT" cut crystal unit are illustrated in Figure 4. Figure 4 The elements as shown above vibrate in various modes, the most important of which are the extensional, flexural and shear. The mode of vibration determines the maximum frequency, stability vs. temperature, and resistance of a given element. The various modes of vibration are shown in Figure, while a comparison of the various frequency stabilities vs temperature are shown in Figure. Figure vs. Overtone This is of concern primarily when specifying the "AT" cut crystal unit. These units increase in frequency as the thickness of the resonator plate is diminished. At some point, typically around 0MHz, the plate becomes too thin for efficient processing. As the "AT" will resonate at odd integer multiples of the fundamental frequency, it is necessary to specify the desired order of overtone when ordering higher frequency crystals. Drive Level Drive level is the amount of power dissipated by the crystal. Drive level is usually specified in terms of micro or milliwatts, with a typical value being 00 microwatts. TECHNICAL 00 FOX ELECTRONICS 7

86 QUARTZ CRYSTAL DESIGN NOTES Series vs. Parallel "Series" resonant crystals are intended for use in circuits which contain no reactive components in the oscillator feedback loop. "Parallel" resonant crystals are intended for use in circuits which contain reactive components (usually capacitors) in the oscillator feedback loop. Such circuits depend on the combination of the reactive components and the crystal to accomplish the phase shift necessary to start and maintain oscillation at the specified frequency. Basic depictions of two such circuits are shown below. Figure 5 Pullability Pullability refers to the change in frequency of a crystal unit, either from the natural resonant frequency (Fr) to a load resonant frequency (FL), or from one load resonant frequency to another. See Figure 6. The amount of pullability exhibited by a given crystal unit at a given value of load capacitance is a function of the shunt capacitance (Co) and the motional capacitance (C) of the crystal unit. Figure 6 TECHNICAL Load Capacitance This refers to capacitance external to the crystal, contained within the feedback loop of the oscillator circuit. If the application requires a "parallel" resonant crystal, the value of load capacitance must be specified. If the application requires a "series" resonant crystal, load capacitance is not a factor and need not be specified. Load capacitance is the amount of capacitance measured or computed across the crystal terminals on the PCB. Tolerance tolerance refers to the allowable deviation from nominal, in parts per million (PPM), at a specific temperature, usually +5 C. Stability stability refers to the allowable deviation, in parts per million (PPM), over a specified temperature range. Deviation is referenced to the measured frequency at +5 C. Aging Aging refers to the cumulative change in frequency experienced by a crystal unit over time. Factors affecting aging are excessive drive level, various thermal effects, wire fatigue and frictional wear. Circuit design incorporating low operating ambients and minimum drive level will reduce the aging rate. Equivalent Circuit The equivalent circuit, shown in Figure 7, is an electrical depiction of the quartz crystal unit when operating at a frequency of natural resonance. The Co, or shunt capacitance, represents the capacitance of the crystal electrodes plus the capacitance of the holder and leads. R, C, and L compose the "motional arm" of the crystal and are referred to as the motional parameters. The motional inductance (L), represents the vibrating mass of the crystal unit. The motional capacitance (C), represents the elasticity of the quartz and the resistance (R), represents bulk losses occurring within the quartz. Figure 7 Impedance/Reactance Curve A crystal has two frequencies of zero phase, as illustrated in Figure 8. The first, or lower of the two, is the Series Resonant, denoted as (fs). At this point, the crystal appears resistive in the circuit, impedance is at a minimum and current flow is maximum. As the frequency is increased beyond the point of series resonance, the crystal appears inductive in the circuit. When the reactances of the motional inductance and shunt capacitance cancel, the crystal is at the of Anti-resonance, denoted as (fa). At this point, impedance is maximized and current flow is minimized FOX ELECTRONICS

87 QUARTZ CRYSTAL DESIGN NOTES Figure 8 Solder Reflow of Surface Mount Devices Mounting of SMD units is typically accomplished by means of solder reflow, in Figure 9 either by infrared heat or by vapor phase. The following graphs depict the recommended times and temperatures for each of the two methods: Figure 9 Quality Factor (Q) The "Q" value of a crystal unit is a measure of the units relative quality, or efficiency of oscillation. The maximum attainable stability of a crystal unit is dependent on the "Q" value. In Figure 8 above, the separation between the series and parallel frequencies is called the bandwidth. The smaller the bandwidth, the higher the "Q" value, and the steeper the slope of the reactance. Changes in the reactance of external circuit components have less effect (less "pullability") on a high "Q" crystal, therefore such a part is more stable. Calculation of Load Capacitance If the circuit configuration is as shown in Figure 5 for the parallel version, the load capacitance may be calculated by means of the following equation: Useful Crystal Equations CL = CL * CL CL + CL + Cstray Cstray includes the pin to pin input and output capacitance of the microprocessor chip at the Crystal and Crystal pins, plus any parasitic capacitances. As a rule of thumb, Cstray may be assumed to equal 5.0 pf. Therefore, if CL = CL = 50pF, CL = 0pF. Trim Sensitivity Trim sensitivity is a measure of the incremental fractional frequency change for an incremental change in the value of the load capacitance. Trim sensitivity (S) is expressed in terms of PPM/pF and is calculated by the following equation: C * S = * Ct Where (Ct) is the sum of Co and CL. TECHNICAL 00 FOX ELECTRONICS 75

88 OSCILLATOR THEORY OF OPERATION Crystal controlled oscillators may be considered as consisting of an amplifier and a feedback network that selects a part of the amplifier output and returns it to the amplifier input. A generalized depiction of such a circuit is shown below. At the parallel point, the resistance is maximal and the current flow is minimal. Therefore, the parallel resonant frequency, Fa, should never be used as the controlling frequency of an oscillator circuit. TECHNICAL Figure.0 In order for an oscillator circuit to operate, two () conditions must be met: (A) The loop power gain must be equal to unity. (B) The loop phase shift must be equal to 0, Pi, 4Pi, etc. radians. The power fed back to the input of the amplifier must be adequate to supply the oscillator output, the amplifier input, and to overcome circuit losses. The exact frequency at which an oscillator will operate is dependent on the loop phase angle shifts within the oscillator circuit. Any net change in phase angle will result in a change in the output frequency. As the usual goal of an oscillator is to provide a frequency that is essentially independent of variables, some means of minimizing the net phase shift must be employed. Perhaps the best, and certainly the most common means of minimizing the net phase shift is to use a quartz crystal unit in the feedback loop. The impedance of a quartz crystal changes so dramatically with changes in the applied frequency that all other circuit components can be considered as being of essentially constant reactance. Therefore, when a crystal unit is used in the feedback loop of an oscillator, the frequency of the crystal unit will adjust itself so that the crystal unit presents a reactance which satisfies the loop phase requirements. A depiction of the reactance vs. frequency of a quartz crystal unit is shown below. Figure As is apparent from Figure, a quartz crystal unit has two frequencies of zero phase. The first, or lower of the two, is the series resonant frequency, usually abbreviated as Fs. The second, or higher of the two frequencies of zero phase is the parallel, or anti-resonant frequency, usually abbreviated as Fa. Both the series and parallel resonant frequencies appear resistive in an oscillator circuit. At the series resonant point, the resistance is minimal and the current flow is maximal. A quartz crystal unit can be made to oscillate at any point along the line between the series and parallel resonant points by the inclusion of reactive components (usually capacitors) in the feedback loop of the oscillator circuit. In such a case, the frequency of oscillation will be higher than the series resonant frequency but lower than the parallel resonant frequency. Because of the fact that the frequency resulting from the addition of capacitance is higher than the series resonant frequency, it is usually called the parallel frequency, though it is lower than the true parallel frequency. Just as there are two frequencies of zero phase associated with a quartz crystal unit, there are two primary oscillator circuits. These circuits are generally described by the type of crystal unit to be used, namely series or parallel. SERIES CIRCUIT: A series resonant oscillator circuit uses a crystal which is designed to operate at its natural series resonant frequency. In such a circuit, there will be no capacitors in the feedback loop. Series resonant oscillator circuits are used primarily because of their minimal component count. These circuits may, however, provide feedback paths other than through the crystal unit. Therefore, in the event of crystal failure, such a circuit may continue to oscillate at some arbitrary frequency. A depiction of a basic series resonant oscillator circuit is given below. Figure.0 As is apparent from Figure.0, a series resonant oscillator circuit provides no means of adjusting the output frequency, should adjustment be required. In the above circuit, resistor R is used to bias the inverter and to cause it to operate in its linear region. This resistor also provides negative feedback to the inverter. Capacitor C is a coupling capacitor, used to block DC voltage. Resistor R is used to bias the crystal unit. This resistor strongly influences the drive current seen by the crystal unit, therefore care must be taken that too small a value is not chosen. Crystal unit Y is a series resonant crystal unit, specified to operate at the desired frequency and with the desired frequency tolerance and stability FOX ELECTRONICS

89 OSCILLATOR THEORY OF OPERATION PARALLEL CIRCUIT: A parallel resonant oscillator circuit uses a crystal unit which is designed to operate with a specified value of load capacitance. This will result in a crystal frequency which is higher than the series resonant frequency but lower than the true parallel resonant frequency. These circuits do not provide paths other than through the crystal unit to complete the feedback loop. In the event of crystal unit failure, the circuit will not continue to oscillate. A basic depiction of a parallel resonant circuit is given below. Figure 4.0 It must be noted that changes in the value of the load capacitance will result in changes in the output frequency of the oscillator. Therefore, if precise frequency control is required, then a precise specification of load capacitance is required. To illustrate, assume that a crystal unit is specified to operate at a frequency of MHz with a load capacitance of 0.0 pf. Assume that the crystal unit is then placed in a circuit which presents a value of 0.0 pf. The frequency of the crystal unit will then be lower than the specified value. Conversely, should the circuit in question present a value of 0.0 pf, the frequency will be higher than the specified value. The relationship between frequency and load capacitance is shown below. Figure 5.0 This circuit uses a single inverter, with two capacitors in the feedback loop. These capacitors comprise the load capacitance and together with the crystal unit, establish the frequency at which the oscillator will operate. As the value of the load capacitance is changed, so is the output frequency of the oscillator. Therefore, this circuit does provide a convenient means of adjusting the output frequency, should adjustment be required. The resistors R and R serve the same functions as detailed for the series resonant circuit shown in Figure.0. The two load capacitors, CL and CL, serve to establish the frequency at which the crystal unit and therefore the oscillator will operate. Crystal unit Y is a parallel resonant crystal unit, specified to operate with a specified value of load capacitance, at the desired frequency and with the desired frequency tolerance and stability. LOAD CAPACITANCE: Reference has been made to a specified value of load capacitance. Load capacitance may be defined as that value of capacitance, either measured or calculated, present in the oscillator circuit, across the connection points of the crystal. In the case of a series resonant circuit, there is no capacitance present between the connecting points of the crystal unit and therefore, load capacitance need not be specified for a series resonant crystal unit. In the case of a parallel resonant oscillator circuit, capacitance is present. As a direct measurement of this capacitance is impractical, it is usually necessary to calculate the value. The calculation of the value of the load capacitance is done with the following equation: CL * CL CL = CL+ CL + CS () Where CL and CL are the load capacitors and CS is the circuit stray capacitance, usually.0 to 5.0 pf. DRIVE LEVEL: The drive level is the power dissipated by the crystal unit while operating. The power is a function of the applied current, and is usually expressed in terms of Milliwatts or Microwatts. Crystal units are specified as having certain maximum values of drive level, which change as functions of the frequency and mode of operation. It is well to consult with the crystal unit vendor as to the maximum value of drive level allowed for a particular crystal unit. Exceeding the maximum drive level for a given crystal unit may result in unstable operation, increased aging rates, and in some cases, catastrophic damage. The drive level may be calculated by the following equation: POWER = (Irms * R) () Where I is the rms current through the crystal unit and R is the maximum resistance value of the specific crystal unit in question. Equation () is simply Ohms law for power. Measurement of the actual drive level in an operating oscillator circuit may be accomplished by temporarily inserting a resistor in series with the crystal unit. The resistor must be of the same ohmic value as the crystal unit. The voltage drop across the resistor may then be read and the current and power dissipation calculated. The resistor must then be removed. As an alternative means of measuring the drive level, a current probe may be used at the output lead of the crystal unit, if space permits. TECHNICAL 00 FOX ELECTRONICS 77

90 OSCILLATOR THEORY OF OPERATION FREQUENCY VS OVERTONE MODE: The frequency of a quartz crystal unit is limited by the physical dimensions of the vibrating quartz element. In some cases, the limiting dimension(s) are the length and width. In the case of the most popular crystal unit, the AT cut crystal unit, the limiting dimension is the thickness of the vibrating quartz element. As the thickness is diminished, the frequency is increased. At some point, usually around MHz, the thickness of the quartz plate becomes too thin for processing. Figure 7.0 TECHNICAL Should it be desired to develop an oscillator at a frequency higher than the limiting frequency, advantage must be taken of the fact that quartz crystal units will oscillate at odd integer multiples of their fundamental frequency. We may define the fundamental frequency as that frequency which naturally occurs at a given set of mechanical dimensions. Therefore, if a crystal unit has a fundamental frequency of 0.0 MHz, it can also be made to oscillate at, 5, 7, etc. times the fundamental. That is, the unit will oscillate at 0.0, 50.0, 70.0, etc. MHz. These multiples of the fundamental frequency are called overtones and are identified by the integer of multiplication, as in the third overtone, the fifth overtone, etc. When use at an overtone frequency is required, the crystal unit must be specified to operate at the desired frequency and on the desired overtone. One should never attempt to order a fundamental mode crystal unit and then operate it at an overtone frequency. This is so due to the fact that the crystal manufacturing processes differ for fundamental and overtone crystal units. In many cases, the characteristics of the integrated circuit used in a particular oscillator design dictate that the fundamental frequency of the crystal unit be suppressed in order to ensure operation at the desired frequency and on the desired overtone. In such cases, it is usually necessary to modify the oscillator circuit. One method of modification is to add a tank circuit, consisting of an inductor and a capacitor. These modifications are shown in Figure 6.0 and 7.0 Figure 6.0 Figure 6.0 depicts the modification of a series resonant circuit while Figure 7.0 depicts the modification of a parallel resonant circuit. In both cases, the tank circuit is tuned to resonate at some frequency between the fundamental and the desired frequency. This results in the unwanted frequency being shunted to ground, leaving only the desired frequency being present at the output of the oscillator. DESIGN CONSIDERATIONS: For good operation of an oscillator circuit, certain design considerations should be followed. In all cases, it is recommended that parallel traces be avoided in order to reduce circuit stray capacitance. All traces should be kept as short as possible and components should be isolated in order to prevent coupling. Ground planes should be used to isolate signals. NEGATIVE RESISTANCE: For optimum performance, an oscillator circuit must be designed in such a way as to enhance negative resistance, which is sometimes called the oscillation allowance. Evaluation of the amount of negative resistance in a given circuit is accomplished by temporarily installing a variable resistor in series with the crystal unit. The resistor should be set initially at its lowest setting, preferably close to zero ohms. The oscillator is then started and the output monitored on an oscilloscope. The variable resistor is then adjusted so that resistance is increased while the output is continuously monitored. At some value of resistance, oscillation will be stopped. At this point, the variable resistor is measured to determine the ohmic value at which oscillation ceased. To this value, the maximum resistance of the crystal unit, as specified by the vendor, must be added. The total ohmic resistance is deemed to be the negative resistance or the oscillation allowance. For good, reliable circuit operation, it is recommended that the negative resistance be a minimum of five times the specified maximum resistance value of the crystal unit. Values of negative resistance exceeding five times the maximum resistance of the crystal unit are better yet. As negative resistance tends to decrease at elevated temperatures, it is recommended that the test be performed at the highest temperature of the operating range FOX ELECTRONICS

91 FREQUENTLY ASKED QUESTIONS TECHNICAL INFO Check our Web Site: often for updates on the FAQ and other technical issues. What is the difference between series resonant and parallel resonant crystals? 4. What happens if I operate a crystal outside of its specified temp range? All quartz crystal resonators have a series resonant frequency (f s, frequency of lowest impedance). At this frequency, the crystal appears resistive in the circuit. Crystals can be pulled from this series frequency by adding reactance (capacitance) in series with the crystal. When operated in combination with an external load capacitance (C L ) the crystal oscillates in a frequency range slightly above its series resonant frequency. This is the parallel (load resonant) frequency. 5. We do not recommend that you operate a crystal outside of its specified temp range. The most notable change will be a greater frequency drift due to the increased temperature extremes. Another and more serious problem that can occur is activity dips. Activity dips can cause the oscillator to stop oscillating at a specific temperature. What happens if I operate a crystal over its maximum drive level spec?. When ordering a parallel crystal, always specify the nominal parallel resonant frequency and the amount of load capacitance in picofarads (pf). Alternatively, a standard value of C L (such as 0pF) can be ordered; the capacitor values are then calculated to match the crystal C L. Note that a series type will oscillate in a parallel oscillator, and vice versa. The observable difference is a frequency offset of less than PPM (0.%) from the nominal frequency. The load capacitance (C L ) of my parallel resonant crystal is rated at 0pF. How do I calculate the value of the load capacitors used in my parallel resonant oscillator circuit? Use this formula to approximate the value of capacitors needed: C L =((C x C ) / (C + C )) + C stray 6. Exceeding the maximum drive level (power dissipation) of a crystal can lead to an increased rate of aging, Drive Level Dependency (DLD) problems, increased intensity of activity dips that can stop oscillation and, at very high drive levels, breakage of the crystal blank. What is an activity dip? An activity dip is defined as an abrupt increase in Effective Series Resistance (ESR) with an associated shift in resonant frequency over a narrow range of a few degrees Celsius. Activity dips can cause an oscillator to stop oscillating at a specific temperature, then restart as the temperature continues to change. This is because the oscillator has insufficient loop gain to maintain oscillation. The amount and intensity of activity dips are proportional to the drive level. As the drive level increases, so does the intensity of the activity dips.. C stray is the stray capacitance in the circuit, typically - 5pF. If the oscillation frequency is high, the capacitor values should be increased to lower the frequency. If the frequency is low, the capacitor values should be decreased, thus raising the oscillation frequency. It is desirable to keep C and C of equal value for optimum symmetry. When C L =0pF, C and C will be approximately 7-pF each, depending on the amount of stray capacitance. Can I get crystals rated for C to +85 C? Yes, this industrial temperature range ( C to +85 C) is optional on most crystals. Depending on the crystal package, temperature ranges of up to -55 C to +05 C may be available. Contact Fox s engineering department to discuss your specific requirements. 7. I have an existing design that uses a HC49U. What should I consider if I change to the smaller HC49S crystal, or an SMD crystal? Drive Level HC49U crystals are typically rated.0mw max, while the HC49S and most SMD crystals are rated at only 0.5mW or 0.mW maximum. See question 5 for more information on exceeding the maximum drive level of a crystal. Pullability some applications require tuning the frequency of the oscillator, either by mechanically or electrically changing the value of load capacitance. The HC49S and surface mount crystals have less pullability than the HC49U. It is important to verify whether the HC49S or the surface mount crystal will have sufficient pull range for the application. ESR The Equivalent Series Resistance (ESR) is generally higher with the HC49S and surface mount crystals, and can cause a problem if the oscillator circuit does not have sufficient loop gain. TECHNICAL 00 FOX ELECTRONICS 79

92 FREQUENTLY ASKED QUESTIONS TECHNICAL INFO Check our Web Site: often for updates on the FAQ and other technical issues 8. Why don t HC49S and surface mount crystals pull as much as HC49U crystals? The HC49U crystal utilizes a circular AT-cut crystal blank. Due to their small size, most surface mount crystals use a rectangular AT-strip cut crystal blank. ( Strip refers to the rectangular shape of the blank.) While both are AT-cut blanks, several differences exist due to their different geometries. In general, given the same frequency and overtone, an AT-strip cut will have a lower Shunt Capacitance (C O ) and Motional Capacitance (C ) than the AT-cut. Because pullability is a function of the capacitance ratio C O /C, AT-strip crystals have less pullability. 9. What is the difference between AT- and BT-cuts? 0. Both AT and BT indicate singularly rotated Y -axis cuts through the quartz crystal. The BT is cut at an angle approximately opposite that of the AT. BT-cut blanks are thicker than AT-cuts at the same frequency; therefore, higher fundamental mode frequencies are possible with the BT before the blank becomes too thin to process. BT-cuts have a parabolic frequency vs. temperature response while AT-cuts have a cubic response. Thus, over a given temperature range, the BT will exhibit a greater frequency shift than the AT. In addition, BT-cuts tend to have a lower capacitance ratio (C O /C ) and, as a result, less pullability. What are the differences between AT-cuts and AT-strip cuts? The differences are in size, shape and some performance characteristics. AT-cut crystal blanks are circular, and ATstrip cut crystal blanks are rectangular. Both types are ATcuts, but several differences in performance characteristics exist because of the different geometries of the blanks. In general, given the same frequency and overtone, the AT-strip will have a lower value of Shunt Capacitance (C O ) and Motional Capacitance (C ). It will also have a higher value of Effective Series Resistance (ESR) and Motional Inductance (L ). Because pullability is a function of C O and C, AT-strip cut crystals have less pullability than circular AT-cut crystals.. Why is there more than one holder designator for the same package? There are three ways to seal a crystal package: solder seal, cold weld and resistance weld. Most manufacturers use the resistance weld method because it is superior to the other two methods. Since not all customer prints have been changed to include the resistance weld crystals, a cross reference is provided below. Resistance weld Cold weld Solder seal HC49U HC4U HC8U HC80U HC47U HCU HC50U HC45U HC5U HC4U HC6U. What information is necessary to order a crystal? The minimum information needed is the Holder or Package,, and Correlation (series resonant, or load capacitance if parallel resonant). All other specifications will be per our standard specifications for the indicated holder. All specifications that differ from our standard specifications must also be supplied when ordered.. Should I focus my design on a series or parallel crystal? For most applications, the parallel crystal is a good choice, in that the parallel design is more widely standardized and is more likely to be a stock item for future purchases. TECHNICAL FOX ELECTRONICS

93 For your convenience, individual PDF Pages are also included on this CD. By clicking on the Part Number located in the Bookmark, the Part Number you choose will open by itself. Once the individual PDF is opened, it can be ed by selecting 'FILE' then 'SEND MAIL'. To return back to the Fox Catalog select the back button which will take you back to the previous view. 00 FOX ELECTRONICS

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