74HC4516 Datasheet, PDF (4/14 Pages) NXP Semiconductors – Binary up/down counter

Philips Semiconductors
Binary up/down counter
Fig.4 Functional diagram.
Product specification
74HC/HCT4516
FUNCTION TABLE
MR PL UP/DN CE CP
MODE
L
HX
L
L
X
L
L
L
L
L
H
H
X
X
X X parallel load
H X no change
L ↑ count down
L ↑ count up
X X reset
Notes
1. H = HIGH voltage level
L = LOW voltage level
X = don’t care
↑ = LOW-to-HIGH clock transition
December 1990
Fig.5 Timing diagram.
4