This post explains for the TTL 7404.

The Part Number is 7404.

The function of this semiconductor is Hex Inverting Gates.

Manufacturer: Fairchild Semiconductor, National Semiconductor

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Description

The 7404 is a popular integrated circuit (IC) part of the 74xx series of logic gates. Specifically, the 7404 is a hex inverter IC, which means it contains six individual inverter gates. Each gate takes one digital input signal and produces the logical inverse (complement) of that input signal at the output. In other words, if the input is a logic high (1), the output will be a logic low (0), and vice versa.

Features

1. Six Hex Inverters

2. Outputs Directly Interface to CMOS, NMOS and TTL

3. Large Operating Voltage Range

4. Wide Operating Conditions

5. Not Recommended for New Designs Use 74LS04

1 page

Pin Number Description

1 A Input Gate 1
2 Y Output Gate 1
3 A Input Gate 2
4 Y Output Gate 2
5 A Input Gate 3
6 Y Output Gate 3
7 Ground
8 Y Output Gate 4
9 A Input Gate 4
10 Y Output Gate 5
11 A Input Gate 5
12 Y Output Gate 6
13 A Input Gate 6
14 Vcc – Positive Supply

 

 

7404 PDF Datasheet