© Semiconductor Components Industries, LLC, 2005

January, 2005 − Rev. 6

1

Publication Order Number:

MC74AC157/D

MC74AC157, MC74ACT157

Quad 2−Input Multiplexer

The MC74AC157/74ACT157 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 MC74AC157/74ACT157 can also be used as a function

generator.

Features

15

16

14

13

12

11

10

2

1

3

4

567

9

8

E

GND

Figure 1. Pinout: 16−Lead Packages Conductors

(Top View)

TRUTH TABLE

Inputs

Outputs

E

S

Z

H

X

X

X

L

L

H

X

L

L

L

H

X

H

H

L

L

L

X

L

L

L

H

X

H

H = HIGH Voltage Level

L = LOW Voltage Level

X = Immaterial

*For additional information on our Pb−Free strategy and soldering details, please

download the ON Semiconductor Soldering and Mounting Techniques

Reference Manual, SOLDERRM/D.

PDIP−16

N SUFFIX

CASE 648

1

16

SOIC−16

D SUFFIX

CASE 751B

1

16

TSSOP−16

DT SUFFIX

CASE 948F

1

16

See general marking information in the device marking

section on page 3 of this data sheet.

DEVICE MARKING INFORMATION

1

16

EIAJ−16

M SUFFIX

CASE 966

See detailed ordering and shipping information in the package

dimensions section on page 6 of this data sheet.

ORDERING INFORMATION

FUNCTION

PIN NAMES

PIN

Source 0 Data Inputs

E

S

Source 0 Data Inputs

Enable Input

Select Input

Outputs

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