74F251A Просмотр технического описания (PDF) - Fairchild Semiconductor
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74F251A Datasheet PDF : 7 Pages
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AC Electrical Characteristics
Symbol
Parameter
tPLH
Propagation Delay
tPHL
Sn to Z
tPLH
Propagation Delay
tPHL
Sn to Z
tPLH
Propagation Delay
tPHL
In to Z
tPLH
Propagation Delay
tPHL
In to Z
tPZH
Output Enable Time
tPZL
OE to Z
tPHZ
Output Disable Time
tPLZ
OE to Z
tPZH
Output Enable Time
tPZL
OE to Z
tPHZ
Output Disable Time
tPLZ
OE to Z
TA = +25°C
VCC = +5.0V
CL = 50 pF
Min
Typ
Max
3.5
6.0
9.0
3.2
5.0
7.5
4.5
7.5
10.5
4.0
6.0
8.5
3.0
5.0
6.5
1.5
2.5
4.0
3.5
5.0
7.0
3.5
5.5
7.0
2.5
4.3
6.0
2.5
4.3
6.0
2.5
4.0
5.5
1.5
3.0
4.5
3.5
5.0
7.0
3.5
5.5
7.5
2.0
3.8
5.5
1.5
3.0
4.5
TA = −55°C to +125°C
VCC = 5.0V
CL = 50 pF
Min
Max
3.5
11.5
3.2
8.0
3.5
14.0
3.0
10.5
2.5
8.0
1.5
6.0
2.5
9.0
3.5
9.0
2.0
7.0
2.5
7.5
2.5
6.0
1.5
5.0
3.0
8.5
3.5
9.0
2.0
5.5
1.5
5.5
TA = 0°C to +70°C
VCC = 5.0V
CL = 50 pF
Min
Max
3.5
9.5
3.2
7.5
4.5
12.5
4.0
9.0
3.0
7.0
1.5
5.0
2.5
8.0
3.5
7.5
2.5
7.0
2.5
6.5
2.5
6.0
1.5
4.5
3.0
7.5
3.5
8.0
2.0
5.5
1.5
4.5
Units
ns
ns
ns
ns
ns
ns
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