High Performance Silicon Gate CMOS

Transcription

1 High Performance Silicon Gate CMOS The MC74CA is identical in pinout to the standard CMOS MC. The device inputs are compatible with standard CMOS outputs; with pullup resistors, they are compatible with LSTTL outputs. This device coists of 2 master slave flip flops. The output of each flip flop feeds the next and the frequency at each output is half of that of the preceding one. The state counter advances on the negative going edge of the Clock input. Reset is asynchronous and active high. State changes of the Q outputs do not occur simultaneously because of internal ripple delays. Therefore, decoded output signals are subject to decoding spikes and may have to be gated with the Clock of the HCA for some desig. Output Drive Capability: 0 LSTTL Loads Outputs Directly Interface to CMOS, NMOS, and TTL Operating oltage Range: 2 to 6 Low Input Current: µa High Noise Immunity Characteristic of CMOS Devices In Compliance With JEDEC Standard No. 7A Requirements Chip Complexity: 398 FETs or 99.5 Equivalent Gates LOGIC DIAGRAM Pinout: Lead Plastic Package (Top iew) PDIP N SUFFIX CASE 648 SO D SUFFIX CASE 75B TSSOP DT SUFFIX CASE 948F MARKING DIAGRAMS MC74HCAN AWLYYWW A = Assembly Location WL = Wafer Lot YY = Year WW = Work Week FUNCTION TABLE HCA AWLYWW Clock Reset Output State X L L H ORDERING INFORMATION HC A ALYW No Charge Advance to Next State All Outputs Are Low Device Package Shipping MC74HCAN PDIP 2000 / Box MC74HCAD SOIC 48 / Rail MC74HCADR2 SOIC 20 / Reel MC74HCADT TSSOP 96 / Rail MC74HCADTR2 TSSOP 20 / Reel Semiconductor Components Industries, LLC, 200 September, 200 Rev. 4 Publication Order Number: MC74HCA/D

2 MC74HCA ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ MAXIMUM RATINGS* SymbolÎÎÎÎÎÎÎÎÎÎÎÎÎÎ Parameter ÎÎÎÎÎ alue ÎÎÎ Unit ÎÎÎÎ CC ÎÎÎÎÎÎÎÎÎÎÎÎÎÎ DC Supply oltage (Referenced to GND) ÎÎÎÎÎ 0.5 to + 7.0ÎÎÎ ÎÎÎÎ in ÎÎÎÎÎÎÎÎÎÎÎÎÎÎ DC Input oltage (Referenced to GND) ÎÎÎÎÎ 0.5 to CC + 0.5ÎÎÎ ÎÎÎÎ out ÎÎÎÎÎÎÎÎÎÎÎÎÎÎ DC Output oltage (Referenced to GND) ÎÎÎÎÎ 0.5 to CC + 0.5ÎÎÎ ÎÎÎÎ Iin ÎÎÎÎÎÎÎÎÎÎÎÎÎÎ DC Input Current, per Pin ÎÎÎÎÎ ± 20 ÎÎÎ ma ÎÎÎÎ Iout ÎÎÎÎÎÎÎÎÎÎÎÎÎÎ DC Output Current, per Pin ÎÎÎÎÎ ± 25 ÎÎÎ ma ÎÎÎÎ ICC ÎÎÎÎÎÎÎÎÎÎÎÎÎÎ DC Supply Current, CC and GND Pi ÎÎÎÎÎ ± ÎÎÎ ma ÎÎÎÎ PD ÎÎÎÎÎÎÎÎÎÎÎÎÎÎ Power Dissipation in Still Air, Plastic DIP ÎÎÎÎÎ 7 ÎÎÎ mw SOIC Package 0 ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ TSSOP Package 4 ÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎ Tstg Storage Temperature Range 65 to + C ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ TL Lead Temperature, mm from Case for 0 Seconds ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ Plastic DIP, SOIC or TSSOP Package ÎÎÎÎÎ 260 ÎÎÎ C *Maximum Ratings are those values beyond which damage to the device may occur. Functional operation should be restricted to the Recommended Operating Conditio. Derating Plastic DIP: 0 mw/c from 65 to 25C SOIC Package: 7 mw/c from 65 to 25C TSSOP Package: 6. mw/c from 65 to 25C For high frequency or heavy load coideratio, see Chapter 2 of the ON Semiconductor High Speed CMOS Data Book (DL29/D). RECOMMENDED OPERATING CONDITIONS ÎÎÎÎ Symbol ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ Parameter ÎÎÎ Min ÎÎ Max ÎÎÎ Unit ÎÎÎÎ CC ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ DC Supply oltage (Referenced to GND) ÎÎÎ ÎÎ ÎÎÎ ÎÎÎÎ in, outîîîîîîîîîîîîîîî DC Input oltage, Output oltage (Referenced to GND) ÎÎÎ 0 ÎÎ CCÎÎÎ ÎÎÎÎ TA ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ Operating Temperature Range, All Package Types ÎÎÎ 55 ÎÎ + 25ÎÎÎ C ÎÎÎÎ tr, tf ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ Input Rise and Fall Time CC = ÎÎÎ 0 ÎÎ 000 ÎÎÎ (Figure ) CC = ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ CC = ÎÎÎ 0 ÎÎ 0 ÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ CC = 0 0 ÎÎÎÎÎÎ This device contai protection circuitry to guard agait damage due to high static voltages or electric fields. However, precautio must be taken to avoid applicatio of any voltage higher than maximum rated voltages to this high impedance circuit. For proper operation, in and out should be cotrained to the range GND (in or out) CC. Unused inputs must always be tied to an appropriate logic voltage level (e.g., either GND or CC). Unused outputs must be left open. DC CHARACTERISTICS (oltages Referenced to GND) Symbol Parameter Condition IH IL OH OL Minimum High Level Input oltage Maximum Low Level Input oltage Minimum High Level Output oltage Maximum Low Level Output oltage out = or CC Iout 20µA out = or CC Iout 20µA in = IH or IL Iout 20µA in =IH or IL in = IH or IL Iout 20µA Iout 2.4mA Iout 4.0mA Iout 5.2mA Guaranteed Limit CC 55 to 25 C 85 C 25 C Unit

3 MC74HCA DC CHARACTERISTICS (oltages Referenced to GND) Symbol Parameter Condition in = IH or IL Iout 2.4mA Iout 4.0mA Iout 5.2mA CC 55 to 25 C Guaranteed Limit 85 C C Iin Maximum Input Leakage Current in = CC or GND ± ±.0 ±.0 µa ICC Maximum Quiescent Supply Current (per Package) in = CC or GND Iout = 0µA Unit 4 0 µa NOTE: Information on typical parametric values can be found in Chapter 2 of the ON Semiconductor High Speed CMOS Data Book (DL29/D). AC CHARACTERISTICS (CL = pf, Input tr = tf = 6 ) Symbol fmax tplh, tphl tphl tplh, tphl ttlh, tthl Parameter Maximum Clock Frequency (% Duty Cycle) (Figures and 4) Maximum Propagation Delay, Clock to Q* (Figures and 4) Maximum Propagation Delay, Reset to Any Q (Figures 2 and 4) Maximum Propagation Delay, Qn to Qn+ (Figures 3 and 4) Maximum Output Traition Time, Any Output (Figures and 4) Guaranteed Limit CC 55 to 25 C 85 C 25 C Unit Cin Maximum Input Capacitance pf NOTE: For propagation delays with loads other than pf, and information on typical parametric values, see Chapter 2 of the ON Semiconductor High Speed CMOS Data Book (DL29/D). * For TA = 25 C and CL = pf, typical propagation delay from Clock to other Q outputs may be calculated with the following equatio: CC = : tp = [ (n )] CC = : tp = [ (n )] CC = : tp = [ (n )] CC = : tp = [ (n )] C, CC = 5.0 CPD Power Dissipation Capacitance (Per Package)* 3 pf * Used to determine the no load dynamic power coumption: PD = CPD CC 2 f + ICC CC. For load coideratio, see Chapter 2 of the ON Semiconductor High Speed CMOS Data Book (DL29/D). MHz 3

4 MC74HCA TIMING REQUIREMENTS (Input tr = tf = 6 ) Symbol trec tw tw tr, tf Parameter Minimum Recovery Time, Reset Inactive to Clock (Figure 2) Minimum Pulse Width, Clock (Figure ) Minimum Pulse Width, Reset (Figure 2) Maximum Input Rise and Fall Times (Figure ) Guaranteed Limit CC 55 to 25 C 85 C 25 C Unit NOTE: Information on typical parametric values can be found in Chapter 2 of the ON Semiconductor High Speed CMOS Data Book (DL29/D) PIN DESCRIPTIONS INPUTS Clock (Pin 0) Negative edge triggering clock input. A high to low traition on this input advances the state of the counter. OUTPUTS Q thru Q2 (Pi 9, 7, 6, 5, 3, 2, 4, 3, 2, 4, 5, ) Active high outputs. Each Qn output divides the Clock input frequency by 2N. Reset (Pin ) Active high reset. A high level applied to this input asynchronously resets the counter to its zero state, thus forcing all Q outputs low. SWITCHING WAEFORMS Figure. Figure 2. 4

5 MC74HCA SWITCHING WAEFORMS (continued) *Includes all probe and jig capacitance Figure 3. Figure 4. Test Circuit Figure 5. Expanded Logic Diagram 5

6 MC74HCA Figure 6. Timing Diagram APPLICATIONS INFORMATION Time Base Generator A 60Hz sinewave obtained through a 00 K resistor connected to a 20 ac power line through a step down traformer is applied to the input of the MC54/74HC4A, Schmitt-trigger inverter. The HC4A squares up the input waveform and feeds the HCA. Selecting outputs Q5, Q0, Q, and Q2 causes a reset every 3600 clocks. The HC20 decodes the counter outputs, produces a single (narrow) output pulse, and resets the binary counter. The resulting output frequency is.0 pulse/minute. NOTE: Ground MUST be isolated by a traformer or opto isolator for safety reaso. Figure 7. Time Base Generator 6

7 MC74HCA PACKAGE DIMENSIONS H A G B F C S K D PL T PDIP N SUFFIX CASE ISSUE R J L M SOIC D SUFFIX CASE 75B 05 ISSUE J T G A D PL K B C P 8 PL M R X J F 7

8 MC74HCA PACKAGE DIMENSIONS T L PIN IDENT. D 2X L/2 C X K REF 9 8 A G TSSOP DT SUFFIX CASE 948F 0 ISSUE O B U H N N J J F DETAIL E DETAIL E K K ÇÇÇ ÉÉÉ SECTION N N M W ON Semiconductor and are trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, coequential or incidental damages. Typical parameters which may be provided in SCILLC data sheets and/or specificatio can and do vary in different applicatio and actual performance may vary over time. All operating parameters, including Typicals must be validated for each customer application by customer s technical experts. SCILLC does not convey any licee under its patent rights nor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applicatio intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates, and distributors harmless agait all claims, costs, damages, and expees, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal Opportunity/Affirmative Action Employer. PUBLICATION ORDERING INFORMATION Literature Fulfillment: Literature Distribution Center for ON Semiconductor P.O. Box 53, Denver, Colorado 8027 USA Phone: or Toll Free USA/Canada Fax: or Toll Free USA/Canada ONlit@hibbertco.com N. American Technical Support: Toll Free USA/Canada JAPAN: ON Semiconductor, Japan Customer Focus Center 4 32 Nishi Gotanda, Shinagawa ku, Tokyo, Japan Phone: r25@oemi.com ON Semiconductor Website: For additional information, please contact your local Sales Representative. 8 MC74HCA/D

9 This datasheet has been download from: Datasheets for electronics components.