TLF9507

November 1994

54F74F257A

Quad 2-Input Multiplexer with TRI-STATE

Outputs

General Description

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

Features

Y

Multiplexer expansion by tying outputs together

Y

Non-inverting TRI-STATE outputs

Y

Input clamp diodes limit high-speed termination effects

Y

Guaranteed 4000V minimum ESD protection

Commercial

Military

Package

Package Description

Number

74F257APC

N16E

16-Lead (0300 Wide) Molded Dual-In-Line

54F257ADM (Note 2)

J16A

16-Lead Ceramic Dual-In-Line

74F257ASC (Note 1)

M16A

16-Lead (0150 Wide) Molded Small Outline JEDEC

74F257ASJ (Note 1)

M16D

16-Lead (0300 Wide) Molded Small Outline EIAJ

54F257AFM (Note 2)

W16A

16-Lead Cerpack

54F257ALL (Note 2)

E20A

20-Lead Ceramic Leadless Chip Carrier Type C

Note 1

Devices also available in 13

Note 2

Logic Symbols

Connection Diagrams

TLF9507 – 3

IEEEIEC

TLF9507 – 5

Pin Assignment

for DIP SOIC and Flatpak

TLF9507 – 1

Pin Assignment

for LCC

TLF9507 – 2

TRI-STATE

is a registered trademark of National Semiconductor Corporation

C1995 National Semiconductor Corporation

RRD-B30M75Printed in U S A