© 2000 Fairchild Semiconductor Corporation

DS009478

www.fairchildsemi.com

April 1988

Revised September 2000

74F138

1-of-8 Decoder/Demultiplexer

General Description

The F138 is a high-speed 1-of-8 decoder/demultiplexer.

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

s Demultiplexing capability

s Multiple input enable for easy expansion

s Active LOW mutually exclusive outputs

Ordering Code:

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

Logic Symbols

IEEE/IEC

Connection Diagram

Order Number

Package Number

Package Description

74F138SC

M16A

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

74F138SJ

M16D

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

74F138PC

N16E

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