CD4044BM datasheet(1/6 Pages) NSC

Part #	CD4044BM

Description	Quad TRI-STATE NOR(NAND) R/S Latches

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Manufacturer	NSC [National Semiconductor (TI)]

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TLF5967

February 1988

CD4043BMCD4043BC Quad TRI-STATE

NOR RS Latches

CD4044BMCD4044BC Quad TRI-STATE

NAND RS Latches

General Description

CD4043BMCD4043BC are quad cross-couple TRI-STATE

CMOS NOR latches and CD4044BMCD4044BC are quad

cross-couple TRI-STATE CMOS NAND latches Each latch

has a separate Q output and individual SET and RESET

inputs There is a common TRI-STATE ENABLE input for all

four latches A logic ‘‘1’’ on the ENABLE input connects the

latch states to the Q outputs A logic ‘‘0’’ on the ENABLE

input disconnects the latch states from the Q outputs result-

ing in an open circuit condition on the Q output The

TRI-STATE feature allows common bussing of the outputs

Features

Y

Wide supply voltage range

3V to 15V

Y

Low power

100 nW (typ)

Y

High noise immunity

045 VDD (typ)

Y

Separate SET and RESET inputs for each latch

Y

NOR and NAND configuration

Y

TRI-STATE output with common output enable

Applications

Y

Multiple bus storage

Y

Strobed register

Y

Four bits of independent storage with output enable

Y

General digital logic

Connection Diagrams

CD4043BMCD4043BC

Dual-In-Line and Flat Packages

TLF5967 – 3

Top View

CD4044BMCD4044BC

Dual-In-Line and Flat Packages

TLF5967 – 4

Top View

Truth Table

CD4043BMCD4043BC

SRE

Q

XX

0OC

00

1

NC

10

1

01

1

0

11

1

D

CD4044BMCD4044BC

SRE

Q

XX

0

OC

111

NC

011

1

101

0

001

DD

Order Number CD4043B or CD4044B

OC

TRI-STATE

NC

No change

X

Don’t care

D

Dominated by Se1 input

DD

Dominated by Re0 input

C1995 National Semiconductor Corporation

RRD-B30M105Printed in U S A

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CD4044BM Datasheet(PDF) 1 Page - National Semiconductor (TI)

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