M74HC393(1993) 데이터 시트보기 (PDF) - STMicroelectronics
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M74HC393 Datasheet PDF : 12 Pages
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M54/M74HC393
INPUT AND OUTPUT EQUIVALENT CIRCUIT
TRUTH TABLE
INPUTS
CLOCK
CLEAR
X
H
L
L
X: Don’t Care
COUNT
QD
0
L
1
L
2
L
3
L
4
L
5
L
6
L
7
L
8
H
9
H
10
H
11
H
12
H
13
H
14
H
15
H
OUTPUS
QD
QC
QB
L
L
L
COUNT UP
NO CHANGE
OUTPUT
QC
QB
L
L
L
L
L
H
L
H
H
L
H
L
H
H
H
H
L
L
L
L
L
H
L
H
H
L
H
L
H
H
H
H
QA
L
QA
L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
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