Motorola CMOS Logic Manual page 344

9
IN 1
17
MC14521B
6–306
LOGIC DIAGRAM
V DD
5
6 4
IN 2 OUT 2
7 3
OUT 1 V SS
18 19 20 21
10 11 12 13
Q18 Q19 Q20 Q21
RESET
2
STAGES
1 2
3 THRU 7
STAGES
9 10 16
11 THRU 15
22 23 24
14 15 1
Q22 Q23 Q24
MOTOROLA CMOS LOGIC DATA
8
V DD = PIN 16
V SS = PIN 8