Datasheet

December 1990 4
Philips Semiconductors Product specification
12-stage binary ripple counter 74HC/HCT4040
Fig.4 Functional diagram.
Fig.5 Logic diagram.
FUNCTION TABLE
Notes
1. H = HIGH voltage level
L = LOW voltage level
X = don’t care
↑ = LOW-to-HIGH clock
transition
↓ = HIGH-to-LOW clock
transition
INPUTS OUTPUTS
CP MR Q
n
↑
↓
X
L
L
H
no change
count
L
Fig.6 Timing diagram.