Philips Semiconductors
Product specification
Johnson decade counter with 10 decoded outputs
74HC/HCT4017
Fig.4 Functional diagram.
FUNCTION TABLE
MR
CP0
CP1
OPERATION
H
X
X
Q0 = Q5-9 = H; Q1 to Q9 = L
L
L
L
L
L
L
H
↑
L
X
H
↓
↓
counter advances
counter advances
no change
no change
no change
L
X
H
↑
L
no change
Notes
1. H = HIGH voltage level
L = LOW voltage level
X = don’t care
↑ = LOW-to-HIGH clock transition
↓ = HIGH-to-LOW clock transition
December 1990
4