SN54ALS157A, SN54ALS158
SN74ALS157A, SN74ALS158, SN74AS157, SN74AS158
QUAD 1ĆOFĆ2 DATA SELECTORS/MULTIPLEXERS
SDAS081C − APRIL 1982 − REVISED DECEMBER 1994
logic symbols†
15
G
1
A /B
2
1A
3
1B
5
2A
6
2B
11
3A
10
3B
14
4A
13
4B
′ALS157A, SN74AS157
EN
G1
1 MUX
1
4
1Y
7
2Y
9
3Y
12
4Y
15
G
1
A /B
2
1A
3
1B
5
2A
6
2B
11
3A
10
3B
14
4A
13
4B
† These symbols are in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
Pin numbers shown are for the D, J, and N packages.
′ALS158, SN74AS158
EN
G1
1 MUX
1
4
1Y
7
2Y
9
3Y
12
4Y
2
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265
• POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443