MC74LVX138 查看數據表（PDF） - Motorola => Freescale
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MC74LVX138 Datasheet PDF : 7 Pages
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MC74LVX138
1
A0
SELECT
2
INPUTS A1
3
A2
4
E1
ENABLE
5
INPUTS E2
6
E3
Figure 2. Logic Diagram
15
O0
14
O1
13
O2
12
O3 DATA
11
OUTPUTS
O4
10
O5
9
O6
7
O7
INPUTS
OUTPUTS
E1
E2
E3
A0
A1
A2
O0
O1
O2
O3
O4
O5
O6
O7
H
X
X
X
X
X
H
H
H
H
H
H
H
H
X
H
X
X
X
X
H
H
H
H
H
H
H
H
X
X
L
X
X
X
H
H
H
H
H
H
H
H
L
L
H
L
L
L
L
H
H
H
H
H
H
H
L
L
H
H
L
L
H
L
H
H
H
H
H
H
L
L
H
L
H
L
H
H
L
H
H
H
H
H
L
L
H
H
H
L
H
H
H
L
H
H
H
H
L
L
H
L
L
H
H
H
H
H
L
H
H
H
L
L
H
H
L
H
H
H
H
H
H
L
H
H
L
L
H
L
H
H
H
H
H
H
H
H
L
H
L
L
H
H
H
H
H
H
H
H
H
H
H
L
H = High Voltage Level; L = Low Voltage Level; X = High or Low Voltage Level and Transitions Are Acceptable; For ICC reasons, DO NOT FLOAT
Inputs
A0
A1
A2
‘04
A3
A4
H
123
A0 A1 A2
E
123
A0 A1 A2
E
123
A0 A1 A2
E
123
A0 A1 A2
E
O0 O1 O2 O3 O4 O5 O6 O7
O0 O1 O2 O3 O4 O5 O6 O7
O0 O1 O2 O3 O4 O5 O6 O7
O0 O1 O2 O3 O4 O5 O6 O7
O0
O31
Figure 3. Expansion to 1–of–32 Decoding
MOTOROLA
2
LCX DATA
BR1339 — REV 3
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