MM74HCT251J

更新时间： 2024-11-01 13:11:39

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
4页	95K
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MM74HCT251J 数据手册

November 1995

MM54HCT251/MM74HCT251

8-Channel TRI-STATE Multiplexer

General Description

This 8-channel digital multiplexer with TRI-STATE outputs

utilizes advanced silicon-gate CMOS technology. Along with

the high noise immunity and low power consumption of

standard CMOS integrated circuits, it possesses the ability

to drive 10 LS-TTL loads. The large output drive capability

and TRI-STATE feature make this part ideally suited for in-

terfacing with bus lines in a bus oriented system.

MM54HCT/MM74HCT devices are intended to interface be-

tween TTL and NMOS components and standard CMOS

devices. These parts are also plug-in replacements for LS-

TTL devices and can be used to reduce power consumption

in existing designs.

Features

This multiplexer features both true (Y) and complement (W)

outputs as well as a STROBE input. The STROBE must be

at a low logic level to enable this device. When the STROBE

input is high, both outputs are in the high impedance state.

When enabled, address information on the data select in-

puts determines which data input is routed to the Y and W

outputs.

Typical propagation delay: 20 ns

Low quiescent current: 40 mA maximum (74HCT Series)

Low input current: 1 mA maximum

Fanout of 10 LS-TTL loads

TTL input compatible

Connection and Logic Diagrams

Dual-in-Line Package

Truth Table

Inputs

Select

Outputs

Strobe

TL/F/9401–1

logic level

high logic level, L

Top View

irrelevant, Z

high impedance (off)

the level of the respective D input

Order Number MM54HCT251 or MM74HCT251

. . D7

D0, D1 .

TL/F/9401–2

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

1995 National Semiconductor Corporation

TL/F/9401

RRD-B30M115/Printed in U. S. A.

12 3 4

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MM74HCT251MX	TI	获取价格	HCT SERIES, 8 LINE TO 1 LINE MULTIPLEXER, COMPLEMENTARY OUTPUT, PDSO16, PLASTIC, SO-16
MM74HCT251N	NSC	获取价格	8-Channel TRI-STATE-R Multiplexer
MM74HCT251N/A+	TI	获取价格	IC,LOGIC MUX,SINGLE,8-INPUT,HCT-CMOS,DIP,16PIN,PLASTIC
MM74HCT253J	NSC	获取价格	Dual 4-Channel TRI-STATE-R Multiplexer
MM74HCT253N	NSC	获取价格	Dual 4-Channel TRI-STATE-R Multiplexer
MM74HCT253N/A+	TI	获取价格	IC,LOGIC MUX,DUAL,4-INPUT,HCT-CMOS,DIP,16PIN,PLASTIC
MM74HCT253W/A+	TI	获取价格	IC,LOGIC MUX,DUAL,4-INPUT,HCT-CMOS,FP,16PIN,PLASTIC