SN74LS240 查看數據表（PDF） - Motorola => Freescale
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SN74LS240 Datasheet PDF : 6 Pages
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SN54/74LS240 • SN54/74LS241 • SN54/74LS244
SN54 / 74LS240
INPUTS
1G, 2G
D
OUTPUT
L
L
H
L
H
L
H
X
(Z)
TRUTH TABLES
SN54 / 74LS244
INPUTS
1G, 2G
D
OUTPUT
L
L
L
L
H
H
H
X
(Z)
INPUTS
1G
D
L
L
L
H
H
X
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
Z = HIGH Impedance
SN54 / 74LS241
OUTPUT
INPUTS
2G
D
L
H
L
H
H
H
(Z)
L
X
OUTPUT
L
H
(Z)
GUARANTEED OPERATING RANGES
Symbol
Parameter
VCC
Supply Voltage
TA
Operating Ambient Temperature Range
IOH
Output Current — High
IOL
Output Current — Low
Min
Typ
Max
Unit
54
4.5
5.0
5.5
V
74
4.75
5.0
5.25
54
– 55
25
125
°C
74
0
25
70
54, 74
– 3.0
mA
54
– 12
mA
74
– 15
54
12
mA
74
24
FAST AND LS TTL DATA
5-388
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