ꢀ
ꢁ
ꢂ
ꢃ
ꢄ
ꢅ
ꢀ
ꢆ
ꢂ
ꢇ
ꢄ
ꢈ
ꢉ
ꢀ
ꢁ
ꢂ
ꢀꢁꢇ ꢃ ꢄꢅ ꢀ ꢆꢂ ꢇ ꢄꢈ ꢉꢀ ꢁꢇ ꢃ ꢄꢅ ꢀꢆ ꢂ ꢊ ꢈ ꢉꢀꢁ ꢇ ꢃ ꢄꢀꢆ ꢂ ꢇ ꢈ ꢉ ꢀ ꢁ ꢇꢃꢄ ꢀ ꢆꢂ
ꢃ
ꢄ
ꢅ
ꢀ
ꢆ
ꢂ
ꢊ
ꢊ
ꢋ
ꢌ
ꢄ
ꢍ
ꢉ
ꢆ
ꢑ
ꢒ
ꢓꢑ
ꢔ
ꢉ
ꢍ
ꢄ
ꢕ
ꢄ
ꢉ
ꢀ
ꢐ
ꢅ
ꢐ
ꢖ
ꢕ
ꢒ
ꢎ
ꢀ
ꢗ
ꢘ
ꢌ
ꢅꢕ
ꢙ
ꢏ
ꢅ
ꢐ
ꢚ
ꢐ
ꢎ
ꢀ
SDAS081C − APRIL 1982 − REVISED DECEMBER 1994
logic diagrams (positive logic)
′ALS157A
′ALS158
2
2
1A
1A
4
7
4
1Y
1Y
3
3
5
1B
1B
2A
5
2A
7
2Y
2Y
3Y
4Y
6
6
2B
2B
3A
11
11
3A
9
9
3Y
10
10
14
3B
3B
4A
14
4A
12
12
4Y
13
13
4B
4B
G
15
1
15
G
1
A/B
A/B
SN74AS157
SN74AS158
2
2
1A
1A
4
4
1Y
2Y
3Y
4Y
1Y
3
3
5
1B
1B
2A
5
2A
7
9
7
2Y
6
6
2B
2B
3A
11
11
3A
9
3Y
10
10
14
3B
3B
4A
14
4A
12
12
4Y
13
13
15
1
4B
4B
15
G
G
1
A/B
A/B
Pin numbers shown are for the D, J, and N packages.
3
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