54AC/74AC74 # 54ACT/74ACT74 Dual D-Type Positive Edge-Triggered Flip-Flop General Description The 'AC/'ACT74 is a dual D-type flip-flop with Asynchronous Clear and Set inputs and complementary (Q, Q) outputs. Information at the input is transferred to the outputs on the positive edge of the clock pulse. Clock triggering occurs at a voltage level of the clock pulse and is not directly related to the transition time of the positive-going pulse. After the Clock Pulse input threshold voltage has been passed, the Data input is locked out and information present will not be transferred to the outputs until the next rising edge of the Clock Pulse input. Asynchronous Inputs: LOW input to SD (Set) sets Q to HIGH level LOW input to CD (Clear) sets Q to LOW level Clear and Set are independent of clock Simultaneous LOW on CD and SD makes both Q and Q HIGH Features Y Y Y Y Logic Symbols ICC reduced by 50% Output source/sink 24 mA 'ACT74 has TTL-compatible inputs Standard Military Drawing (SMD) 'AC74: 5962-88520 'ACT74: 5962-87525 Connection Diagrams Pin Assignment for DIP, Flatpak and SOIC TL/F/9920-1 TL/F/9920 - 2 IEEE/IEC TL/F/9920 - 4 Pin Assignment for LCC TL/F/9920 - 3 Pin Names Description D1, D2 CP1, CP2 CD1, CD2 SD1, SD2 Q1, Q1, Q2, Q2 Data Inputs Clock Pulse Inputs Direct Clear Inputs Direct Set Inputs Outputs TL/F/9920 - 5 FACTTM is a trademark of National Semiconductor Corporation. C1995 National Semiconductor Corporation TL/F/9920 RRD-B30M75/Printed in U. S. A. 54AC/74AC74 # 54ACT/74ACT74 Dual D-Type Positive Edge-Triggered Flip-Flop February 1993 Truth Table (Each Half) Inputs Outputs SD CD CP D Q Q L H L H H H H L L H H H X X X L L L X X X H L X H L H H L Q0 L H H L H Q0 H e HIGH Voltage Level L e LOW Voltage Level X e Immaterial L e LOW-to-HIGH Clock Transition Q0(Q0) e Previous Q(Q) before LOW-to-HIGH Transition of Clock Logic Diagram TL/F/9920 - 6 Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays. 2 Absolute Maximum Rating (Note 1) Recommended Operating Conditions If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/Distributors for availability and specifications. Supply Voltage (VCC) DC Input Diode Current (IIK) VI e b0.5V VI e VCC a 0.5V DC Input Voltage (VI) DC Output Diode Current (IOK) VO e b0.5V VO e VCC a 0.5V DC Output Voltage (VO) DC Output Source or Sink Current (IO) DC VCC or Ground Current per Output Pin (ICC or IGND) Storage Temperature (TSTG) Junction Temperature (TJ) CDIP PDIP Supply Voltage (VCC) 'AC 'ACT Input Voltage (VI) b 0.5V to a 7.0V b 20 mA a 20 mA 2.0V to 6.0V 4.5V to 5.5V 0V to VCC 0V to VCC Output Voltage (VO) Operating Temperature (TA) 74AC/ACT 54AC/ACT b 0.5V to VCC a 0.5V b 20 mA a 20 mA b 40 C to a 85 C b 55 C to a 125 C Minimum Input Edge Rate (DV/Dt) 'AC Devices VIN from 30% to 70% of VCC VCC @ 3.3V, 4.5V, 5.5V Minimum Input Edge Rate (DV/Dt) 'ACT Devices VIN from 0.8V to 2.0V VCC @ 4.5V, 5.5V b 0.5V to VCC a 0.5V g 50 mA g 50 mA b 65 C to a 150 C 125 mV/ns 125 mV/ns 175 C 140 C Note 1: Absolute maximum ratings are those values beyond which damage to the device may occur. The databook specifications should be met, without exception, to ensure that the system design is reliable over its power supply, temperature, and output/input loading variables. National does not recommend operation of FACT TM circuits outside databook specifications. DC Characteristics for 'AC Family Devices Symbol Parameter VCC (V) 74AC 54AC 74AC TA e a 25 C TA e b 55 C to a 125 C TA e b 40 C to a 85 C Typ VIH VIL VOH IIN Conditions Guaranteed Limits Minimum High Level Input Voltage 3.0 4.5 5.5 1.5 2.25 2.75 2.1 3.15 3.85 2.1 3.15 3.85 2.1 3.15 3.85 V VOUT e 0.1V or VCC b 0.1V Maximum Low Level Input Voltage 3.0 4.5 5.5 1.5 2.25 2.75 0.9 1.35 1.65 0.9 1.35 1.65 0.9 1.35 1.65 V VOUT e 0.1V or VCC b 0.1V Minimum High Level Output Voltage 3.0 4.5 5.5 2.99 4.49 5.49 2.9 4.4 5.4 2.9 4.4 5.4 2.9 4.4 5.4 V 2.56 3.86 4.86 2.4 3.7 4.7 2.46 3.76 4.76 V 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 V 3.0 4.5 5.5 0.36 0.36 0.36 0.5 0.5 0.5 0.44 0.44 0.44 V 5.5 g 0.1 g 1.0 g 1.0 mA 3.0 4.5 5.5 VOL Units Maximum Low Level Output Voltage Maximum Input Leakage Current 3.0 4.5 5.5 0.002 0.001 0.001 *All outputs loaded; thresholds on input associated with output under test. 3 IOUT e b50 mA *VIN e VIL or VIH b 12 mA b 24 mA IOH b 24 mA IOUT e 50 mA *VIN e VIL or VIH 12 mA IOL 24 mA 24 mA VI e VCC, GND DC Characteristics for 'AC Family Devices (Continued) Symbol Parameter VCC (V) 74AC 54AC 74AC TA e a 25 C TA e b 55 C to a 125 C TA e b 40 C to a 85 C Typ IOLD IOHD ICC Minimum Dynamic Output Current Maximum Quiescent Supply Current Units Conditions VOLD e 1.65V Max Guaranteed Limits 5.5 50 75 mA 5.5 b 50 b 75 mA VOHD e 3.85V Min mA VIN e VCC or GND 5.5 2.0 40.0 20.0 Maximum test duration 2.0 ms, one output loaded at a time. Note: IIN and ICC @ 3.0V are guaranteed to be less than or equal to the respective limit ICC for 54AC @ 25 C is identical to 74AC @ 25 C. @ 5.5V VCC. DC Characteristics for 'ACT Family Devices 74ACT 54ACT 74ACT TA e a 25 C TA e b 55 C to a 125 C TA e b 40 C to a 85 C Parameter VCC (V) VIH Minimum High Level Input Voltage 4.5 5.5 1.5 1.5 2.0 2.0 2.0 2.0 2.0 2.0 V VOUT e 0.1V or VCC b 0.1V VIL Maximum Low Level Input Voltage 4.5 5.5 1.5 1.5 0.8 0.8 0.8 0.8 0.8 0.8 V VOUT e 0.1V or VCC b 0.1V VOH Minimum High Level Output Voltage 4.5 5.5 4.49 5.49 4.4 5.4 4.4 5.4 4.4 5.4 V 3.86 4.86 3.70 4.70 3.76 4.76 V 0.1 0.1 0.1 0.1 0.1 0.1 V 4.5 5.5 0.36 0.36 0.50 0.50 0.44 0.44 V g 0.1 g 1.0 g 1.0 mA VI e VCC, GND 1.6 1.5 mA VI e VCC b 2.1V 5.5 50 75 mA VOLD e 1.65V Max 5.5 b 50 b 75 mA VOHD e 3.85V Min 40.0 20.0 mA VIN e VCC or GND Symbol Typ 4.5 5.5 VOL Maximum Low Level Output Voltage 4.5 5.5 IIN Maximum Input Leakage Current 5.5 ICCT Maximum ICC/Input 5.5 IOLD Minimum Dynamic Output Current IOHD ICC Maximum Quiescent Supply Current 0.001 0.001 2.0 *All outputs loaded; thresholds on input associated with output under test. Maximum test duration 2.0 ms, one output loaded at a time. Note: ICC for 54ACT @ 25 C is identical to 74ACT @ Conditions Guaranteed Limits 0.6 5.5 Units 25 C. 4 IOUT e b50 mA *VIN e VIL or VIH b 24 mA IOH b 24 mA IOUT e 50 mA *VIN e VIL or VIH 24 mA IOL 24 mA AC Electrical Characteristics Symbol Parameter VCC* (V) 74AC 54AC 74AC TA e a 25 C CL e 50 pF TA e b55 C to a 125 C CL e 50 pF TA e b40 C to a 85 C CL e 50 pF Min Min Max Max Units Min Typ fmax Maximum Clock Frequency 3.3 5.0 100 140 125 160 tPLH Propagation Delay CDn or SDn to Qn or Qn 3.3 5.0 3.5 2.5 8.0 6.0 12.0 9.0 1.0 1.0 13.0 9.5 2.5 2.0 13.0 10.0 ns tPHL Propagation Delay CDn or SDn to Qn or Qn 3.3 5.0 4.0 3.0 10.5 8.0 12.0 9.5 1.0 1.0 14.0 10.5 3.5 2.5 13.5 10.5 ns tPLH Propagation Delay CPn to Qn or Qn 3.3 5.0 4.5 3.5 8.0 6.0 13.5 10.0 1.0 1.0 17.5 12.0 4.0 3.0 16.0 10.5 ns tPHL Propagation Delay CPn to Qn or Qn 3.3 5.0 3.5 2.5 8.0 6.0 14.0 10.0 1.0 1.0 13.5 10.0 3.5 2.5 14.5 10.5 ns 70 95 Max 95 125 MHz *Voltage Range 3.3 is 3.3V g 0.3V Voltage Range 5.0 is 5.0V g 0.5V AC Operating Requirements 74AC 54AC 74AC TA e a 25 C CL e 50 pF TA e b55 C to a 125 C CL e 50 pF TA e b40 C to a 85 C CL e 50 pF Parameter VCC* (V) ts Set-up Time, HIGH or LOW Dn to CPn 3.3 5.0 1.5 1.0 4.0 3.0 5.0 4.0 4.5 3.0 ns th Hold Time, HIGH or LOW Dn to CPn 3.3 5.0 b 2.0 b 1.5 0.5 0.5 0.5 0.5 0.5 0.5 ns tw CPn or CDn or SDn Pulse Width 3.3 5.0 3.0 2.5 5.5 4.5 8.0 5.5 7.0 5.0 ns trec Recovery Time CDn or SDn to CP 3.3 5.0 b 2.5 b 2.0 0 0 0.5 0.5 0 0 ns Symbol Typ *Voltage Range 3.3 is 3.3V g 0.3V Voltage Range 5.0 is 5.0V g 0.5V 5 Units Guaranteed Minimum AC Electrical Characteristics Symbol Parameter VCC* (V) 74ACT 54ACT 74ACT TA e a 25 C CL e 50 pF TA e b55 C to a 125 C CL e 50 pF TA e b40 C to a 85 C CL e 50 pF Min Min Min Typ 5.0 145 210 Propagation Delay CDn or SDn to Qn or Qn 5.0 3.0 5.5 9.5 1.0 11.5 2.5 10.5 ns tPHL Propagation Delay CDn or SDn to Qn or Qn 5.0 3.0 6.0 10.0 1.0 12.5 3.0 11.5 ns tPLH Propagation Delay CPn to Qn or Qn 5.0 4.0 7.5 11.0 1.0 14.0 4.0 13.0. ns tPHL Propagation Delay CPn to Qn or Qn 5.0 3.5 6.0 10.0 1.0 12.0 3.0 11.5 ns fmax Maximum Clock Frequency tPLH Max Max Units 85 Max 125 MHz *Voltage Range 5.0 is 5.0V g 0.5V AC Operating Requirements Symbol Parameter VCC* (V) 74ACT 54ACT 74ACT TA e a 25 C CL e 50 pF TA e b55 C to a 125 C CL e 50 pF TA e b40 C to a 85 C CL e 50 pF Typ Units Guaranteed Minimum ts Set-up Time, HIGH or LOW Dn to CPn 5.0 1.0 3.0 4.0 3.5 ns th Hold Time, HIGH or LOW Dn to CPn 5.0 b 0.5 1.0 1.0 1.0 ns tw CPn or CDn or SDn Pulse Width 5.0 3.0 5.0 7.0 6.0 ns trec Recovery Time CDn or SDn to CP 5.0 b 2.5 0 0.5 0 ns *Voltage Range 5.0 is 5.0V g 0.5V Capacitance Parameter Typ Units Conditions CIN Symbol Input Capacitance 4.5 pF VCC e OPEN CPD Power Dissipation Capacitance 35.0 pF VCC e 5.0V 6 Ordering Information The device number is used to form part of a simplified purchasing code where the package type and temperature range are defined as follows: 74AC 74 P Temperature Range Family 74AC e Commercial 54AC e Military 74ACT e Commercial TTL-Compatible 54ACT e Military TTL-Compatible C QR Special Variations X e Devices shipped in 13x reels QR e Commercial grade device with burn-in QB e Military grade device with environmental and burn-in processing shipped in tubes Device Type Package Code P e Plastic DIP D e Ceramic DIP F e Flatpak L e Leadless Ceramic Chip Carrier (LCC) S e Small Outline (SOIC) Temperature Range C e Commercial (b40 C to a 85 C) M e Military (b55 C to a 125 C) 7 Physical Dimensions inches (millimeters) 20 Terminal Ceramic Leadless Chip Carrier (L) NS Package Number E20A 14 Lead Ceramic Dual-In-Line Package (D) NS Package Number J14A 8 Physical Dimensions inches (millimeters) (Continued) 14 Lead Small Outline Integrated Circuit (S) NS Package Number M14A 14 Lead Plastic Dual-In-Line Package (P) NS Package Number N14A 9 54AC/74AC74 # 54ACT/74ACT74 Dual D-Type Positive Edge-Triggered Flip-Flop Physical Dimensions inches (millimeters) (Continued) 14 Lead Ceramic Flatpak (F) NS Package Number W14B LIFE SUPPORT POLICY NATIONAL'S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF NATIONAL SEMICONDUCTOR CORPORATION. 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