TLF9478

November 1994

54F74F138

1-of-8 DecoderDemultiplexer

General Description

The ’F138 is a high-speed 1-of-8 decoderdemultiplexer

This device is ideally suited for high-speed bipolar memory

chip select address decoding The multiple input enables

allow parallel expansion to a 1-of-24 decoder using just

three ’F138 devices or a 1-of-32 decoder using four ’F138

devices and one inverter

Features

Y

Demultiplexing capability

Y

Multiple input enable for easy expansion

Y

Active LOW mutually exclusive outputs

Y

Guaranteed 4000V minimum ESD protection

Commercial

Military

Package

Package Description

Number

74F138PC

N16E

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

54F138DM (Note 2)

J16A

16-Lead Ceramic Dual-In-Line

74F138SC (Note 1)

M16A

16-Lead (0150 Wide) Molded Small Outline JEDEC

74F138SJ (Note 1)

M16D

16-Lead (0300 Wide) Molded Small Outline EIAJ

54F138FM (Note 2)

W16A

16-Lead Cerpack

54F138LM (Note 2)

E20A

20-Lead Ceramic Leadless Chip Carrier Type C

Note 1

Devices also available in 13

Note 2

Logic Symbols

TLF9478 – 3

IEEEIEC

TLF9478 – 6

Connection Diagrams

Pin Assignment for DIP

SOIC and Flatpak

TLF9478 – 1

Pin Assignment

for LCC

TLF9478 – 2

TRI-STATE

is a registered trademark of National Semiconductor Corporation

C1995 National Semiconductor Corporation

RRD-B30M75Printed in U S A