參數(shù)資料
型號(hào): TC74VHC240FK
廠商: Toshiba Corporation
英文描述: Octal Bus Buffer
中文描述: 八路總線緩沖器
文件頁數(shù): 2/10頁
文件大小: 241K
代理商: TC74VHC240FK
TC74VHC240,244F/FT/FK
2007-10-01
2
Pin Assignment
IEC Logic Symbol
Truth Table
Inputs
Outputs
G
A
n
Y
n
Y
L
L
L
H
L
H
H
L
H
X
Z
Z
X: Don’t care
Z: High impedance
Y
n
: TC74VHC244
n
Y
: TC74VHC240
V
CC
16
2A4
2
Y
1
2A3
15
14
13
12
11
20
1
2
3
4
5
6
7
1A3
2
Y
2
1A4
1
Y
2
1A1
3
Y
1
8
1
Y
1
19
2A2
G
2
1A2
3
Y
2
18
9
4
Y
2
GND 10
2A1
17
4
Y
1
(top view)
TC74VHC240
G
1
V
CC
16
2A4
15
14
13
12
11
20
1
2
3
4
5
6
7
2Y2
1A4
1Y3
8
1Y1
19
2A2
G
2
1A2
18
9
2Y4
GND 10
2A1
17
1Y4
(top view)
TC74VHC244
1Y2
2A3
2Y1
1A3
2Y3
1A1
G
1
(1)
(2)
(4)
(6)
(8)
1A2
1A3
1A4
(18)
(16)
(14)
(12)
2
3
Y
Y
1
1
4
Y
1
EN
G
1
1
Y
1
1A1
TC74VHC240
(19)
(11)
(13)
(15)
(17)
2A2
2A3
2A4
(9)
(7)
(5)
(3)
2
3
Y
Y
2
2
4
Y
2
EN
G
2
1
Y
2
2A1
(1)
(2)
(4)
(6)
(8)
1A2
1A3
1A4
(18)
(16)
(14)
(12)
1Y2
1Y3
1Y4
EN
G
1
1Y1
1A1
TC74VHC244
(19)
(11)
(13)
(15)
(17)
2A2
2A3
2A4
(9)
(7)
(5)
(3)
2Y2
2Y3
2Y4
EN
G
2
2Y1
2A1
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