7 Detailed Description

7.1 Overview

The CD74ACT157 is a high speed silicon gate CMOS multiplexer an excellent choice for multiplexing and data

routing applications. It contains four 2:1 multiplexers.

The CD74ACT157 operates asynchronously, with each Y output being equal to the input selected by the address

input (A/B). All four channels are controlled by the same address input.

The strobe (G) input forces all Y outputs low, regardless of the state of other inputs.

7.2 Functional Block Diagram

A/B

xA

xB

xY

G

Figure 7-1. Logic Diagram (Positive Logic) for CD74ACT157

CD74ACT157

SCHS340D – MARCH 2003 – REVISED JULY 2025

www.ti.com

8

Submit Document Feedback

Copyright © 2025 Texas Instruments Incorporated

Product Folder Links: CD74ACT157