54LS256DMQB datasheet(1/6 Pages) NSC

No. de pieza	54LS256DMQB

Descripción Electrónicos	Dual 4-Bit Addressable Latch

PDF	6 Pages

Scroll/Zoom	100%

Fabricante Electrónico	NSC [National Semiconductor (TI)]

Página de inicio	http://www.national.com

Logo

1 / 6 page

TLF9823

June 1989

54LS256DM74LS256

Dual 4-Bit Addressable Latch

General Description

The ’LS256 is a dual 4-bit addressable latch with common

control inputs these include two Address inputs (A0 A1)

an active LOW enable input (E) and an active LOW Clear

input (CL) Each latch has a Data input (D) and four outputs

(Q0 – Q3)

When the Enable (E) is HIGH and the Clear input (CL)is

LOW all outputs (Q0 – Q3) are LOW Dual 4-channel demul-

tiplexing occurs when the CL and E are both LOW When

CL is HIGH and E is LOW the selected output (Q0 – Q3)

determined by the Address inputs follows D When the E

goes HIGH the contents of the latch are stored When op-

erating in the addressable latch mode (E e LOW CL e

HIGH) changing more than one bit of the Address (A0 A1)

could impose a transient wrong address Therefore this

should be done only while in the memory mode (E e CL e

HIGH)

Features

Y

Serial-to-parallel capability

Y

Output from each storage bit available

Y

Random (addressable) data entry

Y

Easily expandable

Y

Active low common clear

Connection Diagram

Dual-In-Line Package

TLF9823 – 1

Order Number 54LS256DMQB

54LS256FMQB or DM74LS256N

See NS Package Number J16A

N16E or W16A

Logic Symbol

TLF9823 – 2

VCC e Pin 16

GND e Pin 8

Pin Names

Description

A0 A1

Common Address Inputs

Da Db

Data Inputs

E

Common Enable Input (Active LOW)

CL

Conditional Clear Input (Active LOW)

Q0a–Q3a

Side A Latch Outputs

Q0b–Q3b

Side B Latch Outputs

C1995 National Semiconductor Corporation

RRD-B30M115Printed in U S A

Número de pieza similar - 54LS256DMQB

Fabricante Electrónico	No. de pieza	Datasheet	Descripción Electrónicos
National Semiconductor ...	54LS253	158Kb / 6P	TRI-STATE Data Selectors/Multiplexers
	54LS253DMQB	158Kb / 6P	TRI-STATE Data Selectors/Multiplexers
	54LS253FMQB	158Kb / 6P	TRI-STATE Data Selectors/Multiplexers
	54LS253LMQB	158Kb / 6P	TRI-STATE Data Selectors/Multiplexers
Motorola, Inc	54LS257	182Kb / 6P	QUAD 2-INPUT MULTIPLEXER WITH 3-STATE OUTPUTS

More results

Descripción similar - 54LS256DMQB

Fabricante Electrónico	No. de pieza	Datasheet	Descripción Electrónicos
Motorola, Inc	SN54LS256	225Kb / 6P	DUAL 4-BIT ADDRESSABLE LATCH
National Semiconductor ...	CD4723BM	146Kb / 8P	Dual 4-Bit, 8-Bit Addressable Latch
NXP Semiconductors	74F256	104Kb / 12P	Dual addressable latch 1988 Nov 29
STMicroelectronics	HCC4724B	302Kb / 14P	8 BIT ADDRESSABLE LATCH Sep-1988
Fairchild Semiconductor	DM9334	65Kb / 5P	8-Bit Addressable Latch
Hitachi Semiconductor	HD74AC259	69Kb / 11P	8-bit Addressable Latch
Toshiba Semiconductor	TC74HC259AP	361Kb / 10P	8-Bit Addressable Latch
Texas Instruments	NTE4099B	976Kb / 16P	8-Bit Addressable Latch
ON Semiconductor	MC74AC259	96Kb / 9P	8-Bit Addressable Latch March, 2015 ??Rev. 7
Toshiba Semiconductor	TC40H259P	230Kb / 5P	8-BIT ADDRESSABLE LATCH

More results

54LS256DMQB Datasheet(PDF) 1 Page - National Semiconductor (TI)

54LS256DMQB Datasheet(HTML) 1 Page - National Semiconductor (TI)

Número de pieza similar - 54LS256DMQB

Descripción similar - 54LS256DMQB

Html Pages

1 2 3 4 5 6

Datasheet Descarga

Enlace URL