TLF11553

November 1993

74ACT164

Serial-In Parallel-Out Shift Register

General Description

The 74ACT164 is a high-speed 8-bit serial-inparallel-out

shift register Serial data is entered through a 2-input AND

gate synchronous with the Low-to-High transition of the

clock The device features an asynchronous Master Reset

which clears the register setting all outputs Low indepen-

dent of the clock

Features

Y

Outputs sourcesink 24 mA

Y

’ACT has TTL-compatible inputs

Logic Symbol

TLF11553 – 1

Pin Names

Description

A B

Data Inputs

CP

Clock Pulse Input (Active Rising Edge)

MR

Master Reset Input (Active Low)

Outputs

Connection Diagram

Pin Assignment

for SOIC

TLF11553 – 2

C1995 National Semiconductor Corporation

RRD-B30M75Printed in U S A