9-359; Rev ; / General Description The MAX76/MAX77 single-pole/single-throw (SPST) switches operate from a single.8v to 5.5V supply. The MAX76 is a normally closed (NC) switch and the MAX77 is the normally open (NO) version. These switches provide Ω on-resistance (R ) and.6ω R flatness with a +.7V supply. These devices typically consume only.µa of quiescent current, making them suitable for use in low-power, portable applications. The MAX76/MAX77 feature low-leakage currents over the entire temperature range, TTL/CMOS-compatible digital logic, and excellent AC characteristics. The MAX76/MAX77 are offered in small 5-pin and 6-pin SC7 and 6-pin µdfn packages. Applications Battery-Operated Equipment Audio Signal Routing Low-Voltage Data-Acquisition Systems Sample-and-Hold Circuits Communications Circuits Relay Replacement Low-Voltage, Ω, SPST, Features Guaranteed R Ω max (+.7V Supply) Guaranteed R Flatness:.6Ω (+.7V Supply) Excellent AC Characteristics High Off-Isolation: -67dB at MHz -3dB Bandwidth: 9MHz.3% Total Harmonic Distortion Low Supply Current:.µA Tiny SC7 and µdfn Packages.8V to 5.5V Single-Supply Operation PART Ordering Information TEMP RANGE P- PACKAGE TOP MARK MAX76EXK-T - C to +85 C 5 SC7-5 AFO MAX76EXT-T - C to +85 C 6 SC7-6 ABS MAX76ELT-T* - C to +85 C 6 µdfn-6 MAX77EXK-T - C to +85 C 5 SC7-5 AFP MAX77EXT-T - C to +85 C 6 SC7-6 ABT MAX77ELT-T* - C to +85 C 6 µdfn-6 *Future product contact factory for availability. MAX76/MAX77 Pin Configurations/Functional Diagrams/Truth Tables TOP VIEW 5 5 6 6 NC NO NC 5 N.C. NO 5 N.C. 3 3 3 3 MAX76 MAX77 MAX76 MAX77 SC7-5 SC7-5 SC7-6 SC7-6 P 5 5 P 6 6 5 N.C. = NOT TERNALLY CNECTED. XYZ 3 NOTE: SC7-5 PACKAGE HAS LETTERG NEAREST P 5. XYZ 3 NOTE: SC7-6 PACKAGE HAS LETTERG NEAREST P 6. Pin Configurations/Functional Diagrams/Truth Tables continued at end of data sheet. PUT SWITCH STATE MAX76 MAX77 SWITCHES SHOWN FOR LOGIC PUT. Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at -888-69-6, or visit Maxim s website at www.maxim-ic.com.
MAX76/MAX77 ABSOLUTE MAXIMUM RATGS (All voltages referenced to ground.),...-.3v to +6V, NO, NC (Note )...-.3V to ( +.3V) Continuous Current (,, )...±3mA Continuous Current, NO, NC...±6mA Peak Current, NO, NC (pulsed at ms, % duty cycle)...±3ma Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS Continuous Power Dissipation (T A = +7ºC) 5-Pin SC7 (derate 3.mW/ºC above +7ºC)...7mW 6-Pin SC7 (derate 3.mW/ºC above +7ºC)...5mW 6-Pin µdfn (derate.mw/ºc above +7 C)...67.7mW Operating Temperature Range...- C to +85 C Storage Temperature Range...-65 C to +5 C Lead Temperature (soldering, s)...+3 C Junction Temperature...+5 C Note : Signals on NO, NC,, or exceeding or are clamped by internal diodes. Limit forward-diode current to maximum current rating. ( =.7V to 3.6V, V IH =.V, V IL =.V, T A = T M to T MAX, unless otherwise noted. Typical values are at T A = +5 C.) (Note ) PARAMETER SYMBOL CDITIS M TYP MAX UNITS ANALOG SWITCH Analog Signal Range V, V NO, V NC V =.7V, I T A = +5 C. 3. On-Resistance R = ma, V NO or V NC = V to T A = T M to T MAX 3.5 Ω On-Resistance Flatness (Note 3) R FLAT () =.7V, I = ma, T A = +5 C.6.85 V NO or V NC = V to T A = T M to T MAX.97 Ω NO, NC Off-Leakage Current I NO(), = 3.3V, V = V, 3V; T A = +5 C -. + I NC() V NO or V NC = 3V, V T A = T M to T MAX - + na = 3.3V, V T A = +5 C -. + On-Leakage Current I = V or 3V; () V NO or V NC = V, 3V, or floating T A = T M to T MAX - + = 3.3V, V T A = +5 C -. + Off-Leakage Current I = V or 3V; () V NO or V NC = 3V, V T A = T M to T MAX - + na na DIGITAL PUTS Input Logic High V IH. V Input Logic Low V IL. V Input Current I V = V or -.5 + µa DYNAMIC V T A = +5 C Turn-On Time (Note ) t = V, R L = 3Ω, C L = 35pF, Figure T A = T M to T MAX ns V T A = +5 C 8 5 Turn-Off Time (Note ) t = V, R L = 3Ω, C L = 35pF, Figure T A = T M to T MAX 5 ns Charge Injection Q V GEN = V, R GEN =, C L =.nf, Figure 3 5 pc NO, NC Off-Capacitance C NO(), C NC() V NO, V NC =, f = MHz, Figure 5 7 pf Switch On-Capacitance C V = V NO/NC, f = MHz, Figure 5 35 pf
ELECTRICAL CHARACTERISTICS (continued) ( =.7V to 3.6V, V IH =.V, V IL =.V, T A = T M to T MAX, unless otherwise noted. Typical values are at T A = +5 C.) (Note ) PARAMETER SYMBOL CDITIS M TYP MAX UNITS V f = MHz -6 Off-Isolation (Note 5) V NO = V NC = V RMS, ISO R L = 5Ω, C L = 5pF, Figure f = MHz -8 On-Channel Bandwidth -3dB BW R L = 5Ω, C L = 5pF, Figure 9 MHz Total Harmonic Distortion THD R L = 6Ω, V P - P, f = H z to kh z T A = +5 C.3 % SUPPLY Positive Supply Current I+ = 5.5V, V = V or T A = +5 C. T A = T M to T MAX Note : SC7 and µdfn packaged parts are % tested at +5 C. Limits across the full temperature range are guaranteed by design and correlation. Note 3: R flatness is defined as the difference between the maximum and minimum value of on-resistance as measured over the specified analog signal ranges. Note : Guaranteed by design. Note 5: Off-isolation = log (VO / VI), where VO is V and VI is either V NC or V NO from the network analyzer. db µa MAX76/MAX77 (T A = +5 C, unless otherwise noted.) Typical Operating Characteristics -RESISTANCE (Ω) 7 6 5 3 -RESISTANCE vs. V =.8V =.5V = 3V =.5V = 5V 3 5 6 V (V) MAX76 toc -RESISTANCE (Ω).6....8.6.. = 5V -RESISTANCE vs. V T A = +85 C T A = +5 C T A = - C 3 5 6 V (V) MAX76 toc -RESISTANCE (Ω).5..5..5 = 3V -RESISTANCE vs. V T A = +85 C T A = +5 C T A = - C 3 V (V) MAX76 toc3 3
MAX76/MAX77 (T A = +5 C, unless otherwise noted.) -LEAKAGE CURRENT (na).. -LEAKAGE CURRENT vs. TEMPERATURE = 5V = 3V. - -5 35 6 85 TEMPERATURE ( C) MAX76 toc -LEAKAGE CURRENT (na) Typical Operating Characteristics (continued).. -LEAKAGE CURRENT vs. TEMPERATURE = 5V = 3V. - -5 35 6 85 TEMPERATURE ( C) MAX76 toc5 CHARGE JECTI (pc) 5 35 3 5 5 5 CHARGE JECTI vs. V 5V 3V 3 5 6 V CM (V) MAX67 toc6 SUPPLY CURRENT (na) 3..5..5..5 SUPPLY CURRENT vs. TEMPERATURE V = ; ALL OTHER SWITCH TERMALS ARE FLOATG = 5V = 3V MAX76 toc7 t/t (ns) 35 3 5 5 5 t /t vs. SUPPLY VOLTAGE t t MAX76 toc8 t/t (ns) 8 6 t /t vs. TEMPERATURE = 5V t t MAX76 toc9 -.5-5 5 TEMPERATURE ( C) 3 5 6 SUPPLY VOLTAGE (V) - -5 35 6 85 TEMPERATURE ( C) t/t (ns) 8 6 8 t /t vs. TEMPERATURE = 3V t t 6 - -5 35 6 85 TEMPERATURE ( C) MAX76 toc RESPSE (db) -LOSS BANDWIDTH = 5V - = 3V - -3 - -5-6 5Ω AND OUT -7.. FREQUENCY (MHz) MAX76 toc
(T A = +5 C, unless otherwise noted.) RESPSE (db) - - -3 - -5-6 -7 -ISOLATI = 3V -8 5Ω AND OUT -9. FREQUENCY (MHz) = 5V Typical Operating Characteristics (continued) MAX76 toc THD (%) TOTAL HARMIC DISTORTI vs. FREQUENCY..8 = 3V, V GEN = 3V P-P.6. = 3V, V GEN = V P-P.. = 5V, V GEN = 5V P-P.8.6 = 5V, V GEN = 3V P-P.. PUT IMPEDANCE = 6Ω f = Hz TO khz.. FREQUENCY (khz) MAX76 toc3 MAX76/MAX77 Pin Description P MAX76 MAX77 NAME FUNCTI SC7-5 SC7-6 µdfn-6 SC7-5 SC7-6 µdfn-6 6 6 Analog Switch Common Terminal NC Analog Switch Normally Closed Terminal 3 3 3 3 Ground 3 3 Logic Input Control 5 6 5 6 Positive Supply Voltage NO Analog Switch Normally Open Terminal 5 5 5 5 N.C. No Connection. Not internally connected. 5
MAX76/MAX77 Low-Voltage, Ω, SPST, Detailed Description The MAX76/MAX77 SPST switches operate from a single supply ranging from.8v to 5.5V. The MAX76 is a normally closed (NC) switch and the MAX77 is the normally open (NO) version. These switches provide 3.5Ω on-resistance (R ) and.9ω R flatness with a +.7V supply. These devices typically consume only.µa of quiescent current, making them suitable for use in low-power, portable applications. The MAX76/MAX77 feature low-leakage currents over V g POSITIVE SUPPLY D D N MAX76 MAX77 the entire temperature range, TTL/CMOS-compatible digital logic, and excellent AC characteristics. The MAX76/MAX77 are offered in small 5-pin and 6-pin SC7 and 6-pin µdfn packages. Applications Information The MAX76/MAX77 operate from a single +.8V to +5.5V supply. The MAX76/MAX77 accept bipolar input signals when and are biased from bipolar supplies. For example, the switch accepts a V P-P input when = V and = -V. ESD-protection diodes are internally connected between each analog switch terminal and both and. One of these diodes conducts if any analog signal is greater than or less than (Figure ). Virtually all analog leakage current is attributed to the ESD diodes. Each diode is biased by the analog signal and either or. The ESD diodes leakage currents vary as the signal changes. Power-Supply Sequencing and Overvoltage Protection Caution: Do not exceed the absolute maximum ratings because stresses beyond the listed ratings may cause permanent damage to the device. Proper power-supply sequencing is recommended for all CMOS devices. Always apply before applying analog signals, especially if the analog signal is not current-limited. Figure. Overvoltage Protection Using Two External Blocking Diodes MAX76 MAX77 SWITCH V PUT NO OR NC SWITCH OUTPUT V OUT LOGIC PUT V 5% tr < 5ns tf < 5ns R L C L t LOGIC PUT C L CLUDES FIXTURE AND STRAY CAPACITANCE. V OUT = V ( RL ) R L + R V OUT SWITCH V OUTPUT t.9 x V UT.9 x V UT LOGIC PUT WAVEFORMS VERTED FOR SWITCHES THAT HAVE THE OPPOSITE LOGIC SENSE. Figure. Switching Time 6
SWITCH PUT V GEN MAX76 MAX77 R GEN Figure 3. Charge Injection NO OR NC SWITCH OUTPUT LOGIC PUT ( TO ).µf C L V OUT V OUT V Q = ( V OUT )(C L ) V OUT MAX76/MAX77 MAX76 MAX77 NO OR NC 5Ω V V MEAS NETWORK ANALYZER 5Ω 5Ω MEAS REF V REF 5Ω 5Ω MEASUREMENTS ARE STANDARDIZED AGAST SHORT AT SOCKET TERMALS. -ISOLATI IS MEASURED BETWEEN AND TERMAL EACH SWITCH. -LOSS IS MEASURED BETWEEN AND TERMAL EACH SWITCH. SIGNAL DIRECTI THROUGH SWITCH IS REVERSED; WORST VALUES ARE RECORDED. -ISOLATI = log V MEAS V REF -LOSS = log V MEAS V REF Figure. Off-Isolation and On-Loss Bandwidth AS REQUIRED MAX76 MAX77 NO OR NC f = MHz CAPACITANCE ANALYZER TRANSISTOR COUNT: 9 PROCESS: CMOS Chip Information Figure 5. Channel Off/On-Capacitance 7
MAX76/MAX77 Pin Configurations/Functional Diagrams/Truth Tables (continued) TOP VIEW NC MAX76 6 MAX77 6 5 N.C. NO 5 N.C. 3 3 µdfn-6 µdfn-6 PUT SWITCH STATE MAX76 MAX77 SWITCHES SHOWN FOR LOGIC PUT. N.C. = NOT TERNALLY CNECTED. 8
Package Information (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/packages.) SC7, 5L.EPS MAX76/MAX77 9
MAX76/MAX77 Package Information (continued) (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/packages.) SC7, 6L.EPS
Package Information (continued) (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/packages.) P DEX AREA D TOP VIEW E A A SIDE VIEW M DIMENSIS M. NOM. MAX. A.6.7.8 A --. -- D.5.5.55 E.95..5 L.3.35. L -- --.8 L -- --.5 b.7..3 e --.5 -- 6L UDFN.EPS MAX76/MAX77 e 6 5 b L P.75x5 b L L 3 A A SECTI A-A BOTTOM VIEW PROPRIETARY FORMATI TITLE: APPROVAL DOCUMENT CTROL NO. REV. -7 B Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, San Gabriel Drive, Sunnyvale, CA 986 8-737-76 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.