74LS54 Quad 2-input AND/OR Inverter Gate


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. 74LS54 Quad 2-input AND/OR Inverter Gate contains 4-wide AND-OR-INVERT gates.

74LS54 Features

  • Two 2-input and Two 3-input AND-OR-INVERT Gate
  • Standard Pin Arrangement
  • Fast Switching Times
  • Operating Temperature up to 70°C
  • Standard TTL Switching Voltages

74LS54 Specifications

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

74LS54 Pinout Diagram

74LS54 Pin Description

Pin NoPin NameDescription
1A1AND Gate 1 Input 1
2B1 AND Gate 1 Input 2
3A2 AND Gate 2 Input 1
4B2 AND Gate 2 Input 2
5C2 AND Gate 2 Input 3
6Y1 OR Inverter Gate Output
7NCNo Connection
8 NC No Connection
9A3 AND Gate 3 Input 1
10B3 AND Gate 3 Input 2
11C3 AND Gate 3 Input 3
12A4 AND Gate 4 Input 1
13B4 AND Gate 4 Input 2
14VCCPositive Supply

74LS54 Circuit


  • Temperature detector circuits
  • Alarm circuits
  • Door Bell Switches

74LS54 Alternative Equivalent


Download 74LS54 Quad 2-input AND/OR Inverter Gate Datasheet from the link given below.