74LS74 Dual D-Type Flip-Flop

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The 74LS series of integrated circuits (ICs) was one of the most popular logic families of transistor-transistor logic (TTL) logic chips. 74LS series is a bipolar, low-power Schottky IC. 74LS74 contains two independent positive-edge-triggered D flip-flops with complementary outputs. The information on the D input is accepted by the flip-flops on the positive-going edge of the clock pulse.

74LS74 Features

  • Two Independent Negative Edge Triggered JK Flip-Flops
  • Standard Pin Arrangement
  • Fast Switching Times
  • Operating Temperature up to 70°C
  • Standard TTL Switching Voltages

74LS74 Specifications

Supply Voltage4.75 – 5.25Vdc
Maximum Clock Frequency40Mhz
Power Dissipation2mW/gate @100kHz
Minimum Output Current8mA
Propagation Delay10nS
Fan Out (TTL Loads)20

74LS74 Pinout Diagram

74LS74 Pin Description

Pin NoPin NameDescription
1CDDigital Clock Pin
2DData Pin
3CPClear Pin
4SDSet Data Pin
5Q1Output Pin Q1
6Q1′Invert Output Pin Q1′
7GNDGround
8Q2′ NAND Gate 4 Output 4
9Q2Invert Output Pin Q2′
10SDSet Data Pin
11CPClear Pin
12DData Pin
13CDDigital Clock Pin
14VCCPositive Supply

74LS74 Circuit

Applications

  • Data Storage
  • Counters & State Machine Designs
  • Logic Synchronizing
  • Divide By Circuits

74LS74 Alternative Equivalent

74LS174,74LS175

Download 74LS74 Dual D-Type Flip-Flop Datasheet from the link given below.