MM74C922 データシートの表示（PDF） - Fairchild Semiconductor
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MM74C922 Datasheet PDF : 11 Pages
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Connection Diagrams (Continued)
Pin Assignment for
DIP and SOIC Package
Top View
MM74C923
Truth Tables
(Pins 0 through 11)
Switch
0
1
2
3
4
5
Position
Y1, X1 Y1, X2 Y1, X3 Y1, X4 Y2, X1 Y2, X2
D
6
7
Y2, X3 Y2, X4
8
Y3, X1
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Y3, X2
10
Y3, X3
11
Y3, X4
AA
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TB
AC
OD
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U E (Note 1) 0
T
(Pins 12 through 19)
Switch
12
Position
Y4, X1
D
0
13
Y4, X2
0
14
Y4, X3
0
15
Y4, X4
0
0
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0
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19
Y5(Note 1), X1 Y5 (Note 1), X2 Y5 (Note 1), X3 Y5 (Note 1), X4
AA
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TB
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AC
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OD
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U E (Note 1) 0
0
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1
T
Note 1: Omit for MM74C922
www.fairchildsemi.com
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