SN54F157A, SN74F157A

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

SDFS053A – MARCH 1987 – REVISED OCTOBER 1993

Copyright

2–1

POST OFFICE BOX 655303

Small-Outline Packages, Ceramic Chip

Carriers, and Standard Plastic and Ceramic

300-mil DIPs

description

The

′F157A is a quadruple 2-input data

selector/multiplexer featuring a common strobe

(G) input. When the strobe is high, all outputs are

low. When the strobe is low, a 4-bit word is

selected from one of two sources and is routed to

the four outputs. The

′F157A provides true data.

The SN54F157A is characterized for operation

over the full military temperature range of – 55

°C

to 125

°C. The SN74F157A is characterized for

operation from 0

°C to 70°C.

FUNCTION TABLE

INPUTS

OUTPUT

G

A /B

A

B

Y

H

X

X

X

L

L

LL

X

L

L

LH

X

H

L

HX

L

L

L

H

X

H

H

SN54F157A ...J PACKAGE

SN74F157A ...D OR N PACKAGE

(TOP VIEW)

32

1 20 19

910 11 12 13

4

5

6

7

8

18

17

16

15

14

4A

4B

NC

4Y

3A

1B

1Y

NC

2A

2B

SN54F157A . . . FK PACKAGE

(TOP VIEW)

NC – No internal connection

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

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.