74LS175 Quad D-Type Flip-Flop with Clear


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. 74LS175 positive-edge-triggered flip-flops utilize TTL circuitry to implement D-type flip-flop logic. All have a direct clear input and the quad (175) versions feature complementary outputs from each flip-flop.

74LS175 Features

  • Four Positive Edge Triggered Flip-Flops with Double Rail Outputs
  • Buffered Clock and Direct Clear Inputs
  • Individual Data Input for each Flip-Flop
  • Can be used as Buffer Storage Registers
  • Standard TTL Switching Voltages

74LS175 Specifications

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

74LS175 Pinout Diagram

74LS175 Pin Description

Pin NoPin NameDescription
1MRMaster Reset Pin
2Q0Output (Active High)
3Q0′Output (Active Low)
4D0Data Input
5D1Data Input
6Q1Output (Active High)
7Q1′Output (Active Low)
9CPClear Pin
10Q2Output (Active High)
11Q2′Output (Active Low)
12D2Data Input
13D3Data Input
14Q3′Output (Active Low)
15Q3Output (Active High)
16VCCPositive Supply


  • Elimination switch
  • Data storage
  • Data transfer
  • Latch
  • Registers
  • Counters
  • Frequency division

74LS175 Alternative Equivalent


Download 74LS175 Quad D-Type Flip-Flop with Clear Datasheet from the link given below.