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HD74LS293 データシートの表示(PDF) - Renesas Electronics

部品番号
コンポーネント説明
メーカー
HD74LS293
Renesas
Renesas Electronics Renesas
HD74LS293 Datasheet PDF : 8 Pages
1 2 3 4 5 6 7 8
HD74LS293
BCD Count Sequence
Outputs
Count
QD
QC
QB
QA
0
L
L
L
L
1
L
L
L
H
2
L
L
H
L
3
L
L
H
H
4
L
H
L
L
5
L
H
L
H
6
L
H
H
L
7
L
H
H
H
8
H
L
L
L
9
H
L
L
H
10
H
L
H
L
11
H
L
H
H
12
H
H
L
L
13
H
H
L
H
14
H
H
H
L
15
H
H
H
H
Notes: 1. H; high level, L; low level, X; irrelevant
2. Output QA is connected to input B.
Block Diagram
Input A
J
Q
QA
CK
K
Input B
J
Q
QB
CK
K
J
Q
QC
CK
K
R0(1)
R0(2)
J
Q
QD
CK
K
Rev.3.00, Jul.15.2005, page 2 of 7

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