参数资料
型号: PI74FCT238T
厂商: Pericom Semiconductor Corp.
英文描述: Fast CMOS 1-of-8 Decoder
中文描述: 快速CMOS 1 - 8解码器
文件页数: 2/6页
文件大小: 55K
代理商: PI74FCT238T
2
PS2004A 03/09/96
PI74FCT138/238T
1-OF-8 DECODER
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PI74FCT138T Product Pin Configuration
PI74FCT138T Product Pin Description
Pin Name
A
0
-A
2
E
1
, E
2
E
3
O
0
-O
7
Description
Address Inputs
Enable Inputs (Active LOW)
Enable Input (Active HIGH)
Outputs (Active LOW)
PI74FCT138T Truth Table
(1)
Inputs
E
3
X
X
L
H
H
H
H
H
H
H
H
Outputs
O
3
H
H
H
H
H
H
L
H
H
H
H
E
1
H
X
X
L
L
L
L
L
L
L
L
E
2
X
H
X
L
L
L
L
L
L
L
L
A
0
X
X
X
L
H
L
H
L
H
L
H
A
1
X
X
X
L
L
H
H
L
L
H
H
A
2
X
X
X
L
L
L
L
H
H
H
H
O
0
H
H
H
L
H
H
H
H
H
H
H
O
1
H
H
H
H
L
H
H
H
H
H
H
O
2
H
H
H
H
H
L
H
H
H
H
H
O
4
H
H
H
H
H
H
H
L
H
H
H
O
5
H
H
H
H
H
H
H
H
L
H
H
O
6
H
H
H
H
H
H
H
H
H
L
H
O
7
H
H
H
H
H
H
H
H
H
H
L
Function
Disable
Disable
Disable
A2-0 = 0
A2-0 = 1
A2-0 = 2
A2-0 = 3
A2-0 = 4
A2-0 = 5
A2-0 = 6
A2-0 = 7
Note:
1. H = HIGH Voltage Level
L = LOW Voltage Level
X = Don't Care
V
CC
O
0
O
1
O
2
O
3
O
4
O
5
O
6
1
2
3
4
5
6
7
8
A
0
A
1
A
2
E
1
E
2
E
3
O
7
16
15
14
13
12
11
10
GND
9
16-PIN
Q16
S16
W16
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