MC14029B ON Semiconductor, MC14029B Datasheet - Page 5

• Manufacturer Part Number: MC14029B
• Description: Binary/Decade Up/Down Counter
• Manufacturer: ON Semiconductor

CLOCK
INPUT
BINARY/DECADE
CARRY OUT
UP/DOWN
CARRY IN
COUNT 0
C
U/D
B/D
CLOCK
out
C
C
P3 P2 P1 P0 CLK
out 3
out 1
PE
Q0
Q1
Q2
Q3
P0
P1
P2
P3
CLOCK
COUNT
Q3 Q2 Q1 Q0
(MSD)
(LSD)
C
MC14029B
out 2
“1”
PE
MSD
1
Figure 3. Divide by N BCD Down Counter and Timing Diagram
V
DD
2
3
C
PE
in
4
5
6
C
U/D
B/D
out
7
P3 P2 P1 P0 CLK
“2”
(Shown for N = 123)
TIMING DIAGRAM
http://onsemi.com
8
Q3 Q2 Q1 Q0
MC14029B
MC14029B
9
V
DD
8
5
7
C
PE
in
6
5
*t
4
W
^
C
U/D
B/D
3
out
900 ns @ V
P3 P2 P1 P0 CLK
2
“3”
Q3 Q2 Q1 Q0
MC14029B
1
LSD
V
DD
0
DD
V
DD
= 5 V
0
9
PE
C
in
6
7
0
OUTPUT