74F257ASC

更新时间： 2024-10-25 22:22:31

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	159K
描述
Quad 2-Input Multiplexer with TRI-STATE Outputs

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74F257ASC 数据手册

November 1994

54F/74F257A

Quad 2-Input Multiplexer with TRI-STATE Outputs

General Description

Features

Multiplexer expansion by tying outputs together

The ’F257A 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 pres-

ent the selected data in true (non-inverted) form. The out-

puts may be switched to a high impedance state with a

HIGH on the common Output Enable (OE) input, allowing

the outputs to interface directly with bus-oriented systems.

Non-inverting TRI-STATE outputs

Input clamp diodes limit high-speed termination effects

Guaranteed 4000V minimum ESD protection

Package

Number

Commercial

74F257APC

Military

Package Description

N16E

J16A

16-Lead (0.300 Wide) Molded Dual-In-Line

54F257ADM (Note 2)

16-Lead Ceramic Dual-In-Line

74F257ASC (Note 1)

74F257ASJ (Note 1)

M16A

M16D

W16A

E20A

16-Lead (0.150 Wide) Molded Small Outline, JEDEC

16-Lead (0.300 Wide) Molded Small Outline, EIAJ

54F257AFM (Note 2)

54F257ALL (Note 2)

16-Lead Cerpack

20-Lead Ceramic Leadless Chip Carrier, Type C

Note 1: Devices also available in 13 reel. Use suffix

SCX and SJX.

Note 2: Military grade device with environmental and burn-in processing. Use suffix

DMQB, FMQB and LMQB.

Logic Symbols

Connection Diagrams

Pin Assignment

for DIP, SOIC and Flatpak

Pin Assignment

for LCC

TL/F/9507–3

IEEE/IEC

TL/F/9507–1

TL/F/9507–2

TL/F/9507–5

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

1995 National Semiconductor Corporation

TL/F/9507

RRD-B30M75/Printed in U. S. A.

12 3 4 5 6 7 8

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与74F257ASC相关器件

型号	品牌	获取价格	描述	数据表
74F257ASC_NL	FAIRCHILD	获取价格	Multiplexer, F/FAST Series, 4-Func, 2 Line Input, 1 Line Output, True Output, TTL, PDSO16,
74F257ASCSCX	NSC	获取价格	Quad 2-Input Multiplexer with TRI-STATE Outputs
74F257ASCSJX	NSC	获取价格	Quad 2-Input Multiplexer with TRI-STATE Outputs
74F257ASCX	FAIRCHILD	获取价格	Multiplexer, F/FAST Series, 4-Func, 2 Line Input, 1 Line Output, True Output, TTL, PDSO16,
74F257ASJ	FAIRCHILD	获取价格	Quad 2-Input Multiplexer with 3-STATE Outputs
74F257ASJ	NSC	获取价格	Quad 2-Input Multiplexer with TRI-STATE Outputs
74F257ASJ	TI	获取价格	F/FAST SERIES, QUAD 2 LINE TO 1 LINE MULTIPLEXER, TRUE OUTPUT, PDSO16, 0.300 INCH, EIAJ, S
74F257ASJ_NL	FAIRCHILD	获取价格	Multiplexer, F/FAST Series, 4-Func, 2 Line Input, 1 Line Output, True Output, TTL, PDSO16,
74F257ASJSCX	NSC	获取价格	Quad 2-Input Multiplexer with TRI-STATE Outputs
74F257ASJSJX	NSC	获取价格	Quad 2-Input Multiplexer with TRI-STATE Outputs