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January 1995
Fig.3 Logic diagram (one counter).
FUNCTION TABLE
3
CP
0
L
X
X
L
H
X
Notes
1. H = HIGH state (the more positive voltage)
L = LOW state (the less positive voltage)
X = state is immaterial
= positive-going transition
= negative-going transition
Product specification
X
CP
1
H
MR
L
L
L
L
L
L
H
MODE
counter advances
counter advances
no change
no change
no change
no change
O
0
to O
3
= LOW
Philips Semiconductors
Dual binary counter
HEF4520B
MSI
PHILIPS [ NXP SEMICONDUCTORS ]
