DM74LS258AJ

更新时间： 2024-11-01 13:07:23

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	166K
描述
IC,LOGIC MUX,QUAD,2-INPUT,LS-TTL,DIP,16PIN,CERAMIC

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技术参数
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DM74LS258AJ 技术参数

是否Rohs认证：	不符合	生命周期：	Obsolete
包装说明：	DIP, DIP16,.3	Reach Compliance Code：	compliant
风险等级：	5.92	JESD-30 代码：	R-XDIP-T16
JESD-609代码：	e0	逻辑集成电路类型：	MULTIPLEXER
功能数量：	4	输入次数：	2
端子数量：	16	最高工作温度：	70 °C
最低工作温度：		输出特性：	3-STATE
封装主体材料：	CERAMIC	封装代码：	DIP
封装等效代码：	DIP16,.3	封装形状：	RECTANGULAR
封装形式：	IN-LINE	电源：	5 V
认证状态：	Not Qualified	子类别：	Multiplexer/Demultiplexers
标称供电电压 (Vsup)：	5 V	表面贴装：	NO
技术：	TTL	温度等级：	COMMERCIAL
端子面层：	Tin/Lead (Sn/Pb)	端子形式：	THROUGH-HOLE
端子节距：	2.54 mm	端子位置：	DUAL
Base Number Matches：	1

DM74LS258AJ 数据手册

June 1989

54LS257A/DM54LS257B/DM74LS257B,

54LS258A/DM54LS258B/DM74LS258B

TRI-STATE Quad 2-Data Selectors/Multiplexers

Features

General Description

TRI-STATE versions LS157 and LS158 with same pin-

outs

These Schottky-clamped high-performance multiplexers

feature TRI-STATE outputs that can interface directly with

data lines of bus-organized systems. With all but one of the

common outputs disabled (at a high impedance state), the

low impedance of the single enabled output will drive the

bus line to a high or low logic level. To minimize the possibil-

ity that two outputs will attempt to take a common bus to

opposite logic levels, the output enable circuitry is designed

such that the output disable times are shorter than the out-

put enable times.

Schottky-clamped for significant improvement in A-C

performance

Provides bus interface from multiple sources in high-

performance systems

Average propagation delay from data input 12 ns

Typical power dissipation

LS257B 50 mW

LS258B 35 mW

This TRI-STATE output feature means that n-bit (paralleled)

data selectors with up to 258 sources can be implemented

for data buses. It also permits the use of standard TTL reg-

isters for data retention throughout the system.

Alternate military/aerospace devices (54LS257A/

54LS258A) are available. Contact a National Semicon-

ductor Sales Office/Distributor for specifications.

Connection Diagrams

Dual-In-Line Package

TL/F/6417–2

Order Number 54LS258ADMQB, 54LS258AFMQB,

54LS258ALMQB, DM54LS258BJ, DM54LS258BW,

DM74LS258BM or DM74LS258BN

TL/F/6417–1

Order Number 54LS257ADMQB, 54LS257AFMQB,

54LS257ALMQB, DM54LS257BJ, DM54LS257BW,

DM74LS257BM or DM74LS257BN

See NS Package Number E20A, J16A,

M16A, N16E or W16A

See NS Package Number E20A, J16A,

M16A, N16E or W16A

Function Table

Inputs

Output

Control

Output Y

Select

LS257 LS258

High Impedance (off)

Low Level, X Don’t Care,

High Level, L

TRI-STATEÉ is a registered trademark of National Semiconductor Corporation.

1995 National Semiconductor Corporation

TL/F/6417

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

12 3 4 5 6 7 8

中文翻译

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与DM74LS258AJ相关器件

型号	品牌	获取价格	描述	数据表
DM74LS258BM	NSC	获取价格	TRI-STATE Quad 2-Data Selectors/Multiplexers
DM74LS258BN	NSC	获取价格	TRI-STATE Quad 2-Data Selectors/Multiplexers
DM74LS258BN/A+	TI	获取价格	IC,LOGIC MUX,QUAD,2-INPUT,LS-TTL,DIP,16PIN,PLASTIC
DM74LS258BN/B+	TI	获取价格	IC,LOGIC MUX,QUAD,2-INPUT,LS-TTL,DIP,16PIN,PLASTIC
DM74LS258J	TI	获取价格	IC,LOGIC MUX,QUAD,2-INPUT,LS-TTL,DIP,16PIN,CERAMIC
DM74LS258J	ROCHESTER	获取价格	Multiplexer
DM74LS258J/A+	TI	获取价格	IC,LOGIC MUX,QUAD,2-INPUT,LS-TTL,DIP,16PIN,CERAMIC
DM74LS258N	TI	获取价格	IC,LOGIC MUX,QUAD,2-INPUT,LS-TTL,DIP,16PIN,PLASTIC
DM74LS258N/A+	TI	获取价格	IC,LOGIC MUX,QUAD,2-INPUT,LS-TTL,DIP,16PIN,PLASTIC
DM74LS258N/B+	TI	获取价格	IC,LOGIC MUX,QUAD,2-INPUT,LS-TTL,DIP,16PIN,PLASTIC

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