54ACT323 datasheet(1/8 Pages) NSC

Part #	54ACT323

Description	8-Bit Universal Shift/Storage Register with Synchronous Reset and Common I/O Pins

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Manufacturer	NSC [National Semiconductor (TI)]

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54ACT323

8-Bit Universal Shift/Storage Register with Synchronous

Reset and Common I/O Pins

General Description

The ’ACT323 is an 8-bit universal shift/storage register with

TRI-STATE® outputs. Parallel load inputs and flip-flop out-

puts are multiplexed to minimize pin count. Separate serial

inputs and outputs are provided for Q

0 and Q7 to allow easy

cascading. Four operation modes are possible: hold (store),

shift left, shift right and parallel load.

Features

n ICC and IOZ reduced by 50%

n Common parallel I/O for reduced pin count

n Additional serial inputs and outputs for expansion

n Four operating modes: shift left, shift right, load and

store

n TRI-STATE outputs for bus-oriented applications

n Outputs source/sink 24 mA

n TTL-compatible inputs

n Standard Military Drawing (SMD)

— ’ACT323: 5962-91607

Logic Symbols

Pin Name

Description

CP

Clock Pulse Input

DS

0

Serial Data Input for Right Shift

DS

7

Serial Data Input for Left Shift

S

0,S1

Mode Select Inputs

SR

Synchronous Reset Input

OE

1,OE2

TRI-STATE Output Enable Inputs

I/O

0– I/O7

Multiplexed Parallel Data Inputs or

TRI-STATE Parallel Data Outputs

Q

0,Q7

Serial Outputs

TRI-STATE® is a registered trademark of National Semiconductor Corporation.

FACT™ is a trademark of Fairchild Semiconductor Corporation.

DS100328-1

DS100328-5

July 1998

DS100328

www.national.com

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54ACT323 Datasheet(PDF) 1 Page - National Semiconductor (TI)

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