74HC4518U View Datasheet(PDF) - Philips Electronics
Part Name
Description
MFG CO.
74HC4518U Datasheet PDF : 7 Pages
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Philips Semiconductors
Dual synchronous BCD counter
Fig.4 Functional diagram.
Product specification
74HC/HCT4518
FUNCTION TABLE
nCP0
↑
L
↓
X
↑
H
X
nCP1
H
↓
X
↑
L
↓
X
MR MODE
L
counter advances
L
counter advances
L
no change
L
no change
L
no change
L
no change
H
Q0 to Q3 = LOW
Notes
1. H = HIGH voltage level
L = LOW voltage level
X = don’t care
↑ = LOW-to-HIGH clock transition
↓ = HIGH-to-LOW clock transition
Fig.5 Logic diagram (one counter).
December 1990
Fig.6 Timing diagram.
4
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