MC74AC257

更新时间： 2024-11-04 22:46:23

品牌	Logo	应用领域
安森美 - ONSEMI		复用器输出元件输入元件
页数	文件大小	规格书
8页	177K
描述
QUAD 2-INPUT MULTIPLEXER WITH 3-STATE OUTPUTS

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中文翻译

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数据手册

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MC74AC257 数据手册

QUAD 2-INPUT

MULTIPLEXER WITH

3-STATE OUTPUTS

The MC74AC257/74ACT257 is a quad 2-input multiplexer with 3-state outputs.

Four bits of data from two sources can be selected using a Common Data Select

input. The four outputs present the selected data in true (noninverted) form. The

outputs may be switched to a high impedance state by placing a logic HIGH on

the common Output Enable (OE) input, allowing the outputs to interface directly

with bus-oriented systems.

• Multiplexer Expansion by Tying Outputs Together

• Noninverting 3-State Outputs

• Outputs Source/Sink 24 mA

• ′ACT257 Has TTL Compatible Inputs

N SUFFIX

CASE 648-08

PLASTIC

PIN NAMES

D SUFFIX

CASE 751B-05

PLASTIC

Common Data Select Input

3-State Output Enable Input

Data Inputs from Source 0

Data Inputs from Source 1

3-State Multiplexer Outputs

–I

0a 0d

–I

1a 1d

Z –Z

GND

LOGIC SYMBOL

TRUTH TABLE

Output

Enable

Select

Input

Data

Inputs

Outputs

OE I

0a 1a 0b 1b 0c 1c 0d 1d

H = HIGH Voltage Level

L = LOW Voltage Level

X = Immaterial

Z = High Impedance

FACT DATA

5-1

12 3 4 5 6 7 8

中文翻译

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与MC74AC257相关器件

型号	品牌	获取价格	描述	数据表
MC74AC257_15	ONSEMI	获取价格	Quad 2-Input Multiplexer with 3-State Outputs
MC74AC257D	MOTOROLA	获取价格	QUAD 2-INPUT MULTIPLEXER WITH 3-STATE OUTPUTS
MC74AC257D	ONSEMI	获取价格	Quad 2−Input Multiplexer with 3−State Outputs
MC74AC257DC	MOTOROLA	获取价格	Multiplexer, AC Series, 4-Func, 2 Line Input, 1 Line Output, True Output, CMOS, PDSO16, PL
MC74AC257DCR1	MOTOROLA	获取价格	AC SERIES, QUAD 2 LINE TO 1 LINE MULTIPLEXER, TRUE OUTPUT, PDSO16, PLASTIC, SOIC-16
MC74AC257DG	ONSEMI	获取价格	Quad 2-Input Multiplexer with 3-State Outputs
MC74AC257DR	MOTOROLA	获取价格	Multiplexer, AC Series, 4-Func, 2 Line Input, 1 Line Output, True Output, CMOS, PDSO16, PL
MC74AC257DR2	ONSEMI	获取价格	Quad 2−Input Multiplexer with 3−State Outputs
MC74AC257DR2G	ONSEMI	获取价格	Quad 2-Input Multiplexer 3-State Output, SOIC 16 LEAD, 2500-REEL
MC74AC257DT	ONSEMI	获取价格	Quad 2−Input Multiplexer with 3−State Outputs