© 1999 Fairchild Semiconductor Corporation

DS009929

www.fairchildsemi.com

November 1988

Revised November 1999

74AC157 • 74ACT157

Quad 2-Input Multiplexer

General Description

The AC/ACT157 is a high-speed quad 2-input multiplexer.

Four bits of data from two sources can be selected using

the common Select and Enable inputs. The four outputs

present the selected data in the true (noninverted) form.

The AC/ACT157 can also be used as a function generator.

Features

s Outputs source/sink 24 mA

s ACT157 has TTL-compatible inputs

Ordering Code:

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

Logic Symbols

IEEE/IEC

Connection Diagram

Pin Descriptions

FACT

 is a trademark of Fairchild Semiconductor Corporation.

Order Number

Package Number

Package Description

74AC157SC

M16A

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

74AC157SJ

M16D

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

74AC157MTC

MTC16

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

74AC157PC

N16E

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

74ACT157SC

M16A

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

74ACT157SJ

M16D

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

74ACT157MTC

MTC16

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

74ACT157PC

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

Outputs