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74HC4520 Datasheet(PDF) 4 Page - NXP Semiconductors

Part No. 74HC4520
Description  Dual 4-bit synchronous binary counter
Download  7 Pages
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Maker  PHILIPS [NXP Semiconductors]
Homepage  http://www.nxp.com
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74HC4520 Datasheet(HTML) 4 Page - NXP Semiconductors

   
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December 1990
4
Philips Semiconductors
Product specification
Dual 4-bit synchronous binary counter
74HC/HCT4520
Fig.4 Functional diagram.
FUNCTION TABLE
Notes
1. H = HIGH voltage level
L = LOW voltage level
X = don’t care
↑ = LOW-to-HIGH clock transition
↓ = HIGH-to-LOW clock transition
nCP0
nCP1
MR
MODE
H
L
counter advances
L
L
counter advances
X
L
no change
X
L
no change
L
L
no change
H
L
no change
XX
H
Q0 to Q3 = LOW
Fig.5 Logic diagram (one counter).
Fig.6 Timing diagram.


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