© 1999 Fairchild Semiconductor Corporation

DS009930

www.fairchildsemi.com

November 1988

Revised November 1999

74ACT158

Quad 2-Input Multiplexer

General Description

The ACT158 is a high-speed quad 2-input multiplexer. It

selects four bits of data from two sources using the com-

mon Select and Enable inputs. The four buffered outputs

present the selected data in the inverted form. The ACT158

can also be used as a function generator.

Features

s Outputs source/sink 24 mA

s TTL-compatible inputs

Ordering Code:

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

Logic Symbols

IEE/IEC

Connection Diagram

Pin Descriptions

FACT

 is a trademark of Fairchild Semiconductor Corporation.

Order Number

Package Number

Package Description

74ACT158SC

M16A

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

74ACT158PC

M16D

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

74ACT158MTC

MTC16

16-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide

74ACT158SJ

N16E

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

Pin Names

Description

Source 0 Data Inputs

Source 1 Data Inputs

E

Enable Input

S

Select Input

Inverted Outputs