Philips Semiconductors
74HC4040; 74HCT4040
12-stage binary ripple counter
7.2 Pin description
Table 3:
Symbol
Q11
Q5
Q4
Q6
Q3
Q2
Q1
GND
Q0
CP
MR
Q8
Q7
Q9
Q10
V
CC
Pin description
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Description
output 11
output 5
output 4
output 6
output 3
output 2
output 1
ground (0 V)
output 0
clock input (HIGH-to-LOW, edge-triggered)
master reset input (active HIGH)
output 8
output 7
output 9
output 10
positive supply voltage
8. Functional description
8.1 Function table
Table 4:
Input
CP
↑
↓
X
[1]
H = HIGH voltage level;
L = LOW voltage level;
X = don’t care;
↑
= LOW-to-HIGH clock transition;
↓
= HIGH-to-LOW clock transition.
Function table
Output
MR
L
L
H
Q0 to Q11
no change
count
L
74HC_HCT4040_3
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 03 — 14 September 2005
5 of 24
PHILIPS [ NXP SEMICONDUCTORS ]
