7400 - Quad NAND Gate

The 7400 IC is a quad 2-input NAND gate chip from the 74xx TTL logic family. It contains four independent NAND gates, each with two inputs and one output, operating typically at 5V. It’s widely used in digital circuits for logic operations, and its standardized 14-pin DIP package makes it a fundamental building block in classic logic design.

SN74LS00N Quad NAND Gate in PDIP-14 package
Fig.: SN74LS00N Quad NAND Gate in PDIP-14 package
SN74HCT00N Quad NAND Gate in PDIP-14 package
Fig.: SN74HCT00N Quad NAND Gate in PDIP-14 package

Features/Specifications

Number of Gates 4
Supply Voltage 2V to 6V
Max Output Current ±25 mA
Propagation Delay ~8 ns
Operating Temperature -40°C to +85°C

📄 SN74LS00 datasheet (1695 kB)

Connections

Terminal diagram of the 7400
Fig.: Terminal diagram of the 7400
Pin Number Name Description
1 1A Input A for Gate 1
2 1B Input B for Gate 1
3 1Y Output Y for Gate 1
4 2A Input A for Gate 2
5 2B Input B for Gate 2
6 2Y Output Y for Gate 2
7 GND Ground
8 3Y Output Y for Gate 3
9 3A Input A for Gate 3
10 3B Input B for Gate 3
11 4Y Output Y for Gate 4
12 4A Input A for Gate 4
13 4B Input B for Gate 4
14 VCC Supply Voltage
Last edited by Christian Grieger on 2025-05-10
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