ꢀꢁ ꢂ ꢃꢄ ꢅ ꢀꢆ ꢂ ꢇꢄ ꢈ ꢉ ꢀꢁ ꢂꢃ ꢄꢅ ꢀ ꢆ ꢂ ꢊ
ꢀꢁ ꢇ ꢃꢄ ꢅ ꢀꢆ ꢂ ꢇꢄ ꢈ ꢉ ꢀꢁ ꢇꢃ ꢄꢅ ꢀ ꢆ ꢂ ꢊ ꢈꢉ ꢀ ꢁꢇ ꢃ ꢄꢀ ꢆ ꢂ ꢇ ꢈ ꢉꢀ ꢁ ꢇꢃ ꢄꢀ ꢆꢂ ꢊ
ꢋꢌ ꢄ ꢍꢉ ꢆ ꢑꢒꢓ ꢑꢔꢉ ꢍ ꢄꢕꢄꢉ ꢀ ꢐꢅ ꢐꢖ ꢕꢒ ꢎꢀ ꢗꢘ ꢌꢅꢕ ꢙꢏ ꢅꢐ ꢚꢐꢎꢀ
SDAS081C − APRIL 1982 − REVISED DECEMBER 1994
†
logic symbols
′ALS157A, SN74AS157
′ALS158, SN74AS158
15
1
15
EN
G1
EN
G
G
1
G1
A/B
A/B
2
2
1A
1B
2A
2B
3A
3B
4A
4B
MUX
1
1A
1B
2A
2B
3A
3B
4A
4B
MUX
4
7
4
7
9
1
1
3
1Y
2Y
3Y
4Y
3
1Y
1
5
5
6
6
2Y
3Y
4Y
11
10
14
13
11
10
14
13
9
12
12
†
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.
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443
TI [ TEXAS INSTRUMENTS ]
