Datasheet > 54LS157E

54LS157E

更新时间： 2024-11-07 22:45:31

品牌	Logo	应用领域
美国国家半导体 - NSC		复用器
页数	文件大小	规格书
8页	162K
描述
Quad 2-Line to 1-Line Data Selectors/Multiplexers

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数据手册

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54LS157E 数据手册

June 1989

54LS157/DM54LS157/DM74LS157,

54LS158/DM54LS158/DM74LS158

Quad 2-Line to 1-Line Data Selectors/Multiplexers

General Description

Features

Buffered inputs and outputs

These data selectors/multiplexers contain inverters and

drivers to supply full on-chip data selection to the four out-

put gates. A separate strobe input is provided. A 4-bit word

is selected from one of two sources and is routed to the four

outputs. The LS157 presents true data whereas the LS158

presents inverted data to minimize propagation delay time.

Typical Propagation Time

LS157 9 ns

LS158 7 ns

Typical Power Dissipation

LS157 49 mW

LS158 24 mW

Applications

Alternate

Military/Aerospace

device

(54LS157,

54LS158) is available. Contact a National Semiconduc-

tor Sales Office/Distributor for specifications.

Expand any data input point

Multiplex dual data buses

Generate four functions of two variables (one variable

is common)

Source programmable counters

Connection Diagrams

Dual-In-Line Package

TL/F/6396–2

TL/F/6396–1

Order Number 54LS158DMQB, 54LS158FMQB,

54LS158LMQB, DM54LS158J, DM54LS158W,

DM74LS158M or DM74LS158N

Order Number 54LS157DMQB, 54LS157FMQB,

54LS157LMQB, DM54LS157J, DM54LS157W,

DM74LS157M or DM74LS157N

See NS Package Number E20A, J16A,

M16A, N16E or W16A

See NS Package Number E20A, J16A,

M16A, N16E or W16A

Function Table

Inputs

Output Y

Strobe

Select

LS157

LS158

Low Level, X Don’t Care

High Level, L

1995 National Semiconductor Corporation

TL/F/6396

RRD-B30M105/Printed in U. S. A.

12 3 4 5 6 7 8

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与54LS157E相关器件

型号	品牌	获取价格	描述	数据表
54LS157FM	ETC	获取价格	2-Input Digital Multiplexer
54LS157FMQB	ETC	获取价格	2-Input Digital Multiplexer
54LS157J	NSC	获取价格	Quad 2-Line to 1-Line Data Selectors/Multiplexers
54LS157J	RAYTHEON	获取价格	Multiplexer/Demultiplexer,
54LS157LMQB	ETC	获取价格	LOGIC MUX\|QUAD\|2-INPUT\|LS-TTL\|LLCC\|20PIN\|CERAMIC
54LS157M	NSC	获取价格	Quad 2-Line to 1-Line Data Selectors/Multiplexers
54LS157M/B2AJC	MOTOROLA	获取价格	Multiplexer, 4-Func, 2 Line Input, TTL, CQCC20
54LS157M/B2CJC	MOTOROLA	获取价格	Multiplexer, 4-Func, 2 Line Input, TTL, CQCC20
54LS157N	NSC	获取价格	Quad 2-Line to 1-Line Data Selectors/Multiplexers
54LS157W	NSC	获取价格	Quad 2-Line to 1-Line Data Selectors/Multiplexers