SN54ALS857, SN74ALS857

HEX 2-TO-1 UNIVERSAL MULTIPLEXERS

WITH 3-STATE OUTPUTS

SDAS170A – DECEMBER 1982 – REVISED JANUARY 1995

2

POST OFFICE BOX 655303

FUNCTION TABLE

INPUTS

OUTPUTS

COMP

S1

S0

Y

OPER = 0

L

L

L

A

H = all A inputs L

L

L

HB

H = all B inputs L

L

H

LA

• B

Z

L

H

HL

L

H

L

LA

H = all A inputs L

H

L

HB

H = all B inputs L

H

H

LA

• B

Z

H

H

H

Z

Z

0

1

S0

5

2A

6

2B

8

3A

9

3B

16

4A

15

4B

19

5A

18

5B

22

6A

21

6B

1Y

4

G

0

3

1

23

S1

N4

13

COMP

3

3

2

0

2

1A

1

3

1B

2Y

7

3Y

10

4Y

14

5Y

17

6Y

20

OPER = 0

11

EN5

EN6

2

&

MUX

1

≥1

≥1

3

4,5

6

† This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.

Pin numbers shown are for the DW, JT, and NT packages.