SN54HCT157, SN74HCT157

QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS

SCLS071B – NOVEMBER 1988 – REVISED MAY 1997

1

POST OFFICE BOX 655303

Small-Outline (D) and Ceramic Flat (W)

Packages, Ceramic Chip Carriers (FK), and

Standard Plastic (N) and Ceramic (J)

300-mil DIPs

description

These monolithic data selectors/multiplexers

contain inverters and drivers to supply full data

selection to the four output gates. A separate

strobe (G) input is provided. A 4-bit word is

selected from one of two sources and is routed to

the four outputs.

The SN54HCT157 is characterized for operation

over the full military temperature range of –55

°C

to 125

°C. The SN74HCT157 is characterized for

operation from –40

°C to 85°C.

FUNCTION TABLE

INPUTS

OUTPUT

STROBE

SELECT

DATA

OUTPUT

Y

G

A/B

A

B

Y

H

X

X

X

L

L

L

L

XL

L

L

H

XH

L

H

X

LL

L

H

X

H

H

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.

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

A/B

1A

1B

1Y

2A

2B

2Y

GND

G

4A

4B

4Y

3A

3B

3Y

SN54HCT157 ...J OR W PACKAGE

SN74HCT157 ...D OR N PACKAGE

(TOP VIEW)

32 1 20 19

910 11 1213

4

5

6

7

8

18

17

16

15

14

4A

4B

NC

4Y

3A

1B

1Y

NC

2A

2B

SN54HCT157 . . . FK PACKAGE

(TOP VIEW)

NC – No internal connection

Copyright

© 1997, Texas Instruments Incorporated

UNLESS OTHERWISE NOTED this document contains PRODUCTION

DATA information 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.