hef4520b NXP Semiconductors, hef4520b Datasheet - Page 3

• Manufacturer Part Number: hef4520b
• Description: Dual Binary Counter
• Manufacturer: NXP Semiconductors

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FUNCTION TABLE
Notes
1. H = HIGH state (the more positive voltage)
CP
X
H
X
L
L = LOW state (the less positive voltage)
X = state is immaterial
0
= positive-going transition
= negative-going transition
CP
H
X
L
X
1
MR
H
L
L
L
L
L
L
counter advances
counter advances
no change
no change
no change
no change
O
0
to O
MODE
3
= LOW
Fig.3 Logic diagram (one counter).