54AC257F

更新时间： 2024-11-19 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	123K
描述
Quad 2-Input Multiplexer with TRI-STATE Outputs

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54AC257F 数据手册

July 1998

54AC257 • 54ACT257

Quad 2-Input Multiplexer with TRI-STATE^®Outputs

General Description

Features

n I_CCand I_OZreduced by 50%

n Multiplexer expansion by tying outputs together

n Noninverting TRI-STATE outputs

n Outputs source/sink 24 mA

The ’AC/’ACT257 is

a quad 2-input multiplexer with

TRI-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) in-

put, allowing the outputs to interface directly with

bus-oriented systems.

n ’ACT257 has TTL-compatible inputs

n Standard Military Drawing (SMD)

— ’AC257: 5962-88703

— ’ACT257: 5962-89689

Logic Symbols

IEEE/IEC

DS100286-1

DS100286-2

Pin Names

Description

Common Data Select Input

TRI-STATE Output Enable Input

Data Inputs from Source 0

Data Inputs from Source 1

TRI-STATE Multiplexer Outputs

_0a–I_0d

_1a–I_1d

Z_a–Z_d

TRI-STATE^®is a registered trademark of National Semiconductor Corporation.

™

FACT is a trademark of Fairchild Semiconductor Corporation.

DS100286

www.national.com

12 3 4 5 6 7 8

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54AC257FMQB	TI	获取价格	AC SERIES, QUAD 2 LINE TO 1 LINE MULTIPLEXER, TRUE OUTPUT, CDFP16, CERAMIC, FP-16
54AC257L	NSC	获取价格	Quad 2-Input Multiplexer with TRI-STATE Outputs
54AC257LM	TI	获取价格	AC SERIES, QUAD 2 LINE TO 1 LINE MULTIPLEXER, TRUE OUTPUT, CQCC20, CERAMIC, LCC-20
54AC257LMQB	TI	获取价格	AC SERIES, QUAD 2 LINE TO 1 LINE MULTIPLEXER, TRUE OUTPUT, CQCC20, CERAMIC, LCC-20
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54AC257LMQBX	TI	获取价格	AC SERIES, QUAD 2 LINE TO 1 LINE MULTIPLEXER, TRUE OUTPUT, CQCC20
54AC257MDA	NSC	获取价格	IC AC SERIES, QUAD 2 LINE TO 1 LINE MULTIPLEXER, TRUE OUTPUT, UUC16, Multiplexer/Demultipl
54AC257MDA	TI	获取价格	AC SERIES, QUAD 2 LINE TO 1 LINE MULTIPLEXER, TRUE OUTPUT, UUC16