74ACT11257

QUADRUPLE 2-LINE TO 1-LINE DATA SELECTOR/MULTIPLEXER

WITH 3-STATE OUTPUTS

SCAS053B – JANUARY 1989 – REVISED APRIL 1996

1

POST OFFICE BOX 655303

System Bus

PCB Layout

Minimize High-Speed Switching Noise

CMOS) 1-

mm Process

125

°C

Sources in High-Performance Systems

Small-Outline (DW) and Shrink

Small-Outline (DB) Packages, and Standard

Plastic 300-mil DIPs (N)

description

The 74ACT11257 is designed to multiplex signals from 4-bit data sources to four output data lines in

bus-organized systems. The 3-state outputs do not load the data lines when the output-enable (OE) input is at

a high logic level.

The 74ACT11257 is characterized for operation from –40

°C to 85°C.

FUNCTION TABLE

INPUTS

OUTPUT

OE

SELECT

DATA

OUTPUT

Y

OE

A/B

A

B

Y

H

X

X

X

Z

L

L

L

XL

L

L

H

XH

L

H

X

LL

L

H

X

H

H

Copyright

© 1996, Texas Instruments Incorporated

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

EPIC is a trademark of Texas Instruments Incorporated.

1

2

3

4

5

6

7

8

9

10

20

19

18

17

16

15

14

13

12

11

A /B

1Y

2Y

GND

GND

GND

GND

3Y

4Y

OE

1A

1B

2A

2B

3A

3B

4A

4B

DB, DW, OR N PACKAGE

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