74HC4510 Datasheet, PDF (4/12 Pages) NXP Semiconductors – BCD up/down counter

Philips Semiconductors
BCD up/down counter
Product specification
74HC/HCT4510
FUNCTION TABLE
MR PL UP/DN CE CP
L
HX
L
LX
L
LL
L
LH
H
XX
XX
HX
L
↑
L↑
XX
Notes
1. H = HIGH voltage level
L = LOW voltage level
X = don’t care
↑ = LOW-to-HIGH clock transition
MODE
parallel load
no change
count down
count up
reset
Fig.4 Functional diagram.
December 1990
Fig.5 Timing diagram.
4