74LS30 8-input NAND 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. 74LS30 8-input NAND Gate contains 8-input NAND Gates

74LS30 Features

  • Three Independent NOR Gates
  • Standard Pin Configuration
  • Fast Switching Times
  • Operating Temperature up to 70°C
  • Standard TTL Switching Voltages

74LS30 Specifications

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

74LS30 Pinout Diagram

74LS30 Pin Description

Pin NoPin NameDescription
1A1NAND Gate 1 Input 1
2B1 NAND Gate 1 Input 2
3C1 NAND Gate 1 Input 3
4D1 NAND Gate 1 Input 4
5E1 NAND Gate 1 Input 5
6F1 NAND Gate 1 Input 6
8X NAND Gate 1 Output
9NC No Connection
10NC No Connection
11G1 NAND Gate 1 Input 7
12H1 NAND Gate 1 Input 8
13NC No Connection
14VCCPositive Supply

74LS30 Circuit


  • Freezer warning buzzer circuits
  • Automatic temperature control circuits

74LS30 Alternative Equivalent

74LS03, 74LS10, 74LS20

Download 74LS30 8-input NAND Gate Datasheet from the link given below.