A

B

Y

10

SN5400, SN54LS00, SN54S00

SN7400, SN74LS00, SN74S00

SDLS025D – DECEMBER 1983 – REVISED MAY 2017

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Product Folder Links: SN5400 SN54LS00 SN54S00 SN7400 SN74LS00 SN74S00

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Copyright © 1983–2017, Texas Instruments Incorporated

8 Detailed Description

8.1 Overview

The SNx4xx00 devices are quadruple, 2-input NAND gates which perform the Boolean function Y = A .B or Y =

A + B in positive logic.

8.2 Functional Block Diagram

8.3 Feature Description

The operating voltage of SN74xx00 is from 4.75-V to 5.25-V VCC. The operating voltage of SN54xx00 is from 4.5-

V to 5.5-V VCC. The SN54xx00 devices are rated from –55°C to 125°C whereas SN74xx00 device are rated from

0°C to 70°C.

8.4

Device Functional Modes

Table 1 lists the functions of the devices.

Table 1. Functional Table (Each Gate)

INPUTS

OUTPUT

A

B

Y

H

H

L

L

X

H

X

L

H