74LS75 4-bit Bi-Stable Latch

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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. 74LS75 contains a 4-bit Bi-Stable Latch. These latches are ideally suited for use as temporary storage for binary information between processing units and input/output or indicator units.

74LS75 Features

  • Designed as a Temporary Storage for Binary Information
  • Latches Feature Complementary Q Outputs
  • Fast Switching Speed
  • Operating Temperature up to 70°C
  • Standard TTL Switching Voltages

74LS75 Specifications

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

74LS75 Pinout Diagram

74LS75 Pin Description

Pin NoPin NameDescription
11Q’Invert Output Pin Latch 1
21DData Input Pin Latch 1
32DData Input Pin Latch 2
43C,4C NAND Gate 2 Input 2
5VCC NAND Gate 2 Input 2
63DData Input Pin Latch 3
74DData Input Pin Latch 4
84Q’Invert Output Pin Latch 4
94QOutput Pin Of Latch 4
103QOutput Pin Of Latch 3
113Q’Invert Output Pin Latch 3
12GND NAND Gate 3 Input 2
131C,2C NAND Gate 3 Input 2
142Q’Invert Output Pin Latch 2
152Q
161QPositive Supply

74LS75 Circuit

Here is a simple circuit of SR Latch using Logic Gate AND and NOR.

Applications

74LS75 Alternative Equivalent

Download 74LS75 4-bit Bi-Stable Latch Datasheet from the link given below.