74ACT257PC

更新时间： 2024-09-12 22:56:15

品牌	Logo	应用领域
飞兆/仙童 - FAIRCHILD		复用器逻辑集成电路光电二极管
页数	文件大小	规格书
9页	100K
描述
Quad 2-Input Multiplexer with 3-STATE Outputs

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74ACT257PC 数据手册

November 1988

Revised November 1999

74AC257 • 74ACT257

Quad 2-Input Multiplexer with 3-STATE Outputs

General Description

Features

The AC/ACT257 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 out-

puts 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-ori-

ented systems.

■ I_CCand I_OZreduced by 50%

■ Multiplexer expansion by tying outputs together

■ Noninverting 3-STATE outputs

■ Outputs source/sink 24 mA

■ ACT257 has TTL-compatible inputs

Ordering Code:

Order Number Package Number

Package Description

74AC257SC

74AC257SJ

M16A

M16D

MTC16

N16E

16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150” Narrow Body

16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide

74AC257MTC

74AC257PC

74ACT257SC

74ACT257SJ

74ACT257MTC

74ACT257PC

16-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide

16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” Wide

16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150” Narrow Body

16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide

M16A

M16D

MTC16

N16E

16-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide

16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” Wide

Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering code.

Logic Symbols

Connection Diagram

IEEE/IEC

Pin Descriptions

Pin Names

Description

Common Data Select Input

3-STATE Output Enable Input

Data Inputs from Source 0

Data Inputs from Source 1

3-STATE Multiplexer Outputs

_0a–I_0d

_1a–I_1d

Z_a–Z_d

FACT is a trademark of Fairchild Semiconductor Corporation.

DS009949

www.fairchildsemi.com

12 3 4 5 6 7...9

中文翻译

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74ACT257PC 替代型号

型号	品牌	替代类型	描述	数据表
TC74ACT257P	TOSHIBA	类似代替	CMOS Digital Integrated Circuit Silicon Monolithic 2-Channel Multiplexer (3-state)
CD54ACT257F3A	TI	功能相似	Quad 2-Input Multiplexer with Three-State Outputs

与74ACT257PC相关器件

型号	品牌	获取价格	描述	数据表
74ACT257PCQR	TI	获取价格	74ACT257PCQR
74ACT257PCQR	FAIRCHILD	获取价格	Multiplexer, ACT Series, 4-Func, 2 Line Input, 1 Line Output, True Output, CMOS, PDIP16, P
74ACT257SC	FAIRCHILD	获取价格	Quad 2-Input Multiplexer with 3-STATE Outputs
74ACT257SC_NL	FAIRCHILD	获取价格	Multiplexer, ACT Series, 4-Func, 2 Line Input, 1 Line Output, True Output, CMOS, PDSO16, 0
74ACT257SCQR	FAIRCHILD	获取价格	Multiplexer, ACT Series, 4-Func, 2 Line Input, 1 Line Output, True Output, CMOS, PDSO16, S
74ACT257SCQR	TI	获取价格	IC,LOGIC MUX,QUAD,2-INPUT,ACT-CMOS,SOP,16PIN,PLASTIC
74ACT257SCT	FAIRCHILD	获取价格	暂无描述
74ACT257SCTR	FAIRCHILD	获取价格	Multiplexer, ACT Series, 4-Func, 2 Line Input, 1 Line Output, True Output, CMOS, PDSO16, S
74ACT257SCX	FAIRCHILD	获取价格	2-Input Digital Multiplexer
74ACT257SCX_NL	FAIRCHILD	获取价格	暂无描述

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