74ACT164 Serial-In, Parallel-Out Shift Register General Description Features The 74ACT164 is a high-speed 8-bit serial-in/parallel-out shift register. Serial data is entered through a 2-input AND gate synchronous with the Low-to-High transition of the clock. The device features an asynchronous Master Reset which clears the register, setting all outputs Low independent of the clock. Y Logic Symbol Connection Diagram Y Outputs source/sink 24 mA ’ACT has TTL-compatible inputs Pin Assignment for SOIC TL/F/11553 – 1 Pin Names A, B CP MR Q0 – Q7 Description TL/F/11553 – 2 Data Inputs Clock Pulse Input (Active Rising Edge) Master Reset Input (Active Low) Outputs FACTTM is a trademark of National Semiconductor Corporation. C1995 National Semiconductor Corporation TL/F/11553 RRD-B30M75/Printed in U. S. A. 74ACT164 Serial-In, Parallel-Out Shift Register November 1993 Functional Description Function Table The 74ACT164 is an edge-triggered 8-bit shift register with serial data entry and an output from each of the eight stages. Data is entered serially through one of two inputs (A or B); either of these inputs can be used as an active High Enable for data entry through the other input. An unused input must be tied High. Each Low-to-High transition on the Clock (CP) input shifts data one place to the right and enters into Q0 the logical AND of the two data inputs (A # B) that existed before the rising clock edge. A Low level on the Master Reset (MR) input overrides all other inputs and clears the register asynchronously, forcing all Q outputs Low. Operating Mode MR Inputs A B Q0 Outputs Q1 –Q7 Reset (Clear) L X X L L–L Shift H H H H L L H H L H L H L L L H Q0 –Q6 Q0 –Q6 Q0 –Q6 Q0 –Q6 H e High Voltage Levels L e Low Voltage Levels X e Immaterial Q e Lower case letters indicate the state of the referenced input or output one setup time prior to the Low-to-High clock transition. Logic Diagram TL/F/11553 – 3 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 Ratings (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) SOIC Supply Voltage (VCC) ’ACT Input Voltage (VI) b 0.5V to a 7.0V 4.5V to 5.5V 0V to VCC 0V to VCC Output Voltage (VO) Operating Temperature (TA) 74ACT b 20 mA a 20 mA b 0.5V to VCC a 0.5V b 40§ C to a 85§ C Minimum Input Edge Rate (DV/Dt) ’ACT Devices VIN from 0.8V to 2.0V VCC @ 4.5V, 5.5V b 20 mA a 20 mA b 0.5V to VCC a 0.5V 125 mV/ns g 50 mA g 50 mA b 65§ C to a 150§ C 140§ C Note 1: Absolute maximum ratings are 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 ’ACT Family Devices Symbol Parameter VCC (V) 74ACT 74ACT TA e a 25§ C TA e b 40§ C to a 85§ C Typ Units Conditions Guaranteed Limits VIH Minimum High Level Input Voltage 4.5 5.5 1.5 1.5 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 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 V 3.86 4.86 3.76 4.76 V 0.1 0.1 0.1 0.1 V 4.5 5.5 0.36 0.36 0.44 0.44 V g 0.1 g 1.0 mA VI e VCC, GND 1.5 mA VI e VCC b 2.1V 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 ² Minimum Dynamic Output Current IOHD ICC Maximum Quiescent Supply Current 0.001 0.001 0.6 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 5.5 75 mA VOLD e 1.65V Max 5.5 b 75 mA VOHD e 3.85V Min 40.0 mA VIN e VCC or GND 5.5 4.0 *All outputs loaded; thresholds on input associated with output under test. ² Maximum test duration 2.0 ms, one output loaded at a time. 3 AC Electrical Characteristics Symbol Parameter VCC* (V) Min 74ACT 74ACT TA e a 25§ C CL e 50 pF TA e b40§ C to a 85§ C CL e 50 pF Typ Max Min Units Max fmax Maximum Clock Frequency 5.0 100 tPLH Propagation Delay CP to Qn 5.0 1.0 6.0 11.5 1.0 12.5 ns tPHL Propagation Delay CP to Qn 5.0 1.0 6.0 11.5 1.0 12.5 ns tPHL Propagation Delay MR to Qn 5.0 1.0 6.0 13.0 1.0 14.5 ns 80 MHz *Voltage Range 5.0 is 5.0V g 0.5V AC Operating Requirements Symbol Parameter VCC* (V) 74ACT 74ACT TA e a 25§ C CL e 50 pF TA e b40§ C to a 85§ C CL e 50 pF Typ Guaranteed Minimum Units tS Set-Up Time, HIGH or LOW A or B to CP 5.0 0.5 7.0 8.0 ns tH Hold Time, HIGH or LOW CP to A or B 5.0 0.0 1.5 1.5 ns tW Pulse Width, HIGH or LOW CP to MR 5.0 0.5 7.0 8.0 ns tREC Recovery Time MR to CP 5.0 0.5 2.0 2.0 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 45.0 pF VCC e 5.0V 4 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: 74ACT 164 S C X Temperature Range Family 74ACT e Commercial TTL-Compatible Special Variations X e Devices Shipped in 13× reels Device Type Temperature Range C e Commercial (b40§ C to a 85 § C) Package Code S e Small Outline Package (SOIC) 5 74ACT164 Serial-In, Parallel-Out Shift Register Physical Dimensions inches (millimeters) 14-Lead Small Outline Integrated Circuit (S) NS Package Number M14A 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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