參數(shù)資料
型號: HD74HC42
廠商: Hitachi,Ltd.
英文描述: BCD-to-Decimal Decoder
中文描述: BCD碼到十進制解碼器
文件頁數(shù): 2/9頁
文件大小: 49K
代理商: HD74HC42
HD74HC42
2
Function Table
BCD Inputs
Decimal Outputs
No.
D
C
B
A
0
1
2
3
4
5
6
7
8
9
0
L
L
L
L
L
H
H
H
H
H
H
H
H
H
1
L
L
L
H
H
L
H
H
H
H
H
H
H
H
2
L
L
H
L
H
H
L
H
H
H
H
H
H
H
3
L
L
H
H
H
H
H
L
H
H
H
H
H
H
4
L
H
L
L
H
H
H
H
L
H
H
H
H
H
5
L
H
L
H
H
H
H
H
H
L
H
H
H
H
6
L
H
H
L
H
H
H
H
H
H
L
H
H
H
7
L
H
H
H
H
H
H
H
H
H
H
L
H
H
8
H
L
L
L
H
H
H
H
H
H
H
H
L
H
9
H
L
L
H
H
H
H
H
H
H
H
H
H
L
INVALID
H
L
H
L
H
H
H
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
L
H
H
H
H
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
Pin Arrangement
1
2
3
4
5
6
7
8
0
1
2
3
4
5
6
7
8
9
A
B
C
D
(Top view)
O
O
I
0Y
1Y
2Y
3Y
4Y
5Y
6Y
GND
16
15
14
13
12
11
10
9
V
CC
A
B
C
D
9Y
8Y
7Y
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