HEF4520B Просмотр технического описания (PDF) - Philips Electronics
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HEF4520B Datasheet PDF : 7 Pages
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FUNCTION TABLE
CP0 CP1 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
X
X
H O0 to O3 = LOW
Notes
1. H = HIGH state (the more positive voltage)
L = LOW state (the less positive voltage)
X = state is immaterial
= positive-going transition
= negative-going transition
Fig.3 Logic diagram (one counter).
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