MM54HC595 datasheet(1/8 Pages) NSC

Part #	MM54HC595

Description	8-Bit Shift Registers with Output Latches

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Manufacturer	NSC [National Semiconductor (TI)]

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TLF5342

January 1988

MM54HC595MM74HC595

8-Bit Shift Registers with Output Latches

General Description

This high speed shift register utilizes advanced silicon-gate

CMOS technology This device possesses the high noise

immunity and low power consumption of standard CMOS

integrated circuits as well as the ability to drive 15 LS-TTL

loads

This device contains an 8-bit serial-in parallel-out shift reg-

ister that feeds an 8-bit D-type storage register The storage

register has 8 TRI-STATE

outputs Separate clocks are

provided for both the shift register and the storage register

The shift register has a direct-overriding clear serial input

and serial output (standard) pins for cascading Both the

shift register and storage register use positive-edge trig-

gered clocks If both clocks are connected together the

shift register state will always be one clock pulse ahead of

the storage register

The 54HC74HC logic family is speed function and pin-out

compatible with the standard 54LS74LS logic family All

inputs are protected from damage due to static discharge by

internal diode clamps to VCC and ground

Features

Y

Low quiescent current 80 mA maximum (74HC Series)

Y

Low input current 1 mA maximum

Y

8-bit serial-in parallel-out shift register

with storage

Y

Wide operating voltage range 2V – 6V

Y

Cascadable

Y

Shift register has direct clear

Y

Guaranteed shift frequency DC to 30 MHz

Connection Diagram

Dual-In-Line Package

TLF5342 – 1

Top View

Order Number MM54HC595 or MM74HC595

Truth Table

RCK

SCK

SCLR

G

Function

XX

X

H

QA thru QHeTRISTATE

X

L

Shift Register cleared

Q He

X

u

H

L

Shift Register clocked

QNeQn

Q eSER

u

X

H

L

Contents of Shift

Register transferred

to output latches

TRI-STATE

is a registered trademark of National Semiconductor Corp

C1995 National Semiconductor Corporation

RRD-B30M105Printed in U S A

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MM54HC595 Datasheet(PDF) 1 Page - National Semiconductor (TI)

MM54HC595 Datasheet(HTML) 1 Page - National Semiconductor (TI)

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