Motorola CMOS Logic Manual page 290

RESET
PRESET ENABLE
CLOCK
CARRY OUT
CARRY IN
UP/DOWN
STATE DIAGRAM FOR UP COUNTING
0 1 2
15
14
13
12 11 10
MC14510B
6–252
LOGIC DIAGRAM
P1 Q1
4 6
P
PE Q
C
D Q
3 4
5
6
7
9 8
P2 Q2 P3 Q3
12 11 13 14
P P
PE Q PE Q
C C
D Q D Q
STATE DIAGRAM FOR DOWN COUNTING
0 1
15
14
13
12 11 10
MOTOROLA CMOS LOGIC DATA
P4 Q4
3 2
P
PE Q
C
D Q
2 3 4
5
6
7
9 8