74HC4020 Datasheet, PDF (4/7 Pages) NXP Semiconductors – 14-stage binary ripple counter

Philips Semiconductors
14-stage binary ripple counter
Fig.4 Functional diagram.
Fig.5 Logic diagram.
Product specification
74HC/HCT4020
FUNCTION TABLE
INPUTS
CP
MR
↑
L
↓
L
X
H
OUTPUTS
Q₀, Q₃ to Q₁₃
no change
count
L
Notes
1. H = HIGH voltage level
L = LOW voltage level
X = don’t care
↑ = LOW-to-HIGH clock
transition
↓ = HIGH-to-LOW clock
transition
September 1993
Fig.6 Timing diagram.
4