74F539 查看數據表（PDF） - Fairchild Semiconductor
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74F539 Datasheet PDF : 6 Pages
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AC Electrical Characteristics
Symbol
Parameter
tPLH
tPHL
tPLH
tPHL
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
Propagation Delay
An to On
Propagation Delay
E to On
Propagation Delay
P to On
Output Enable Time
OE to On
Output Disable Time
OE to On
TA = +25°C
VCC = +5.0V
CL = 50 pF
Min
Typ
Max
4.0
14.5
18.5
4.0
9.5
12.0
5.0
12.0
16.0
4.0
7.5
9.5
7.5
14.5
21.5
5.0
11.0
16.5
4.5
8.0
10.5
5.5
10.0
13.0
2.0
4.5
6.5
3.0
6.5
8.5
TA = 0°C to +70°C
VCC = +5.0V
CL = 50 pF
Min
Max
3.5
19.5
4.0
13.0
5.5
17.0
4.0
10.5
4.5
22.5
4.5
17.5
4.0
11.5
5.0
14.0
2.0
7.0
3.0
9.5
Units
ns
ns
ns
ns
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