參數(shù)資料
型號(hào): HD74HC149FP
元件分類: 算術(shù)邏輯單元
英文描述: HC/UH SERIES, 8-BIT ENCODER, PDSO20
封裝: FP-20DA
文件頁數(shù): 2/9頁
文件大?。?/td> 58K
代理商: HD74HC149FP
HD74HC149
2
Function Table
Inputs
Outputs
01
2345
67
E
Y
0
Y
1
Y
2
Y
3
Y
4
Y
5
Y
6
Y
7
P
XX
XXXX
XXH
H
HHHH
HH
HHHH
HHL
HH
HHH
HHHH
XX
XXXX
XL
L
H
L
XX
XXXX
L
H
L
H
L
H
L
XX
XXXLH
H
L
H
L
H
L
X
L
H
HHL
HH
HHL
HHHL
X
L
HH
HHL
HH
HL
H
HHHL
X
L
HHH
HHL
HH
L
H
HHHL
X
L
HHHH
HHL
HL
HHH
HHHL
L
H
HHHH
HHL
L
H
HHH
HHHL
H :
High level
L
:
Low level
X :
Irrelevant
Pin Arrangement
1
2
3
4
5
6
7
8
9
10
0
1
2
3
4
5
6
7
E
GND
20
19
18
17
16
15
14
13
12
11
VCC
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
P
(Top view)
Inputs
Outputs
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