74AC251 Просмотр технического описания (PDF) - Fairchild Semiconductor
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74AC251 Datasheet PDF : 9 Pages
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AC Electrical Characteristics for ACT
Symbol
Parameter
tPLH
Propagation Delay
Sn to Z or Z
tPHL
Propagation Delay
Sn to Z or Z
tPLH
Propagation Delay
In to Z or Z
tPHL
Propagation Delay
In to Z or Z
tPZH
Output Enable Time
OE to Z or Z
tPZL
Output Enable Time
OE to Z or Z
tPHZ
Output Disable Time
OE to Z or Z
tPLZ
Output Disable Time
OE to Z or Z
Note 8: Voltage Range 5.0 is 5.0V ±0.5V
VCC
(V)
(Note 8)
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
TA = +25°C
CL = 50 pF
Min
Typ
Max
2.5
7.0
15.5
2.5
7.5
16.5
2.5
5.5
12.0
2.5
6.5
12.5
1.5
5.0
8.5
1.5
4.5
8.5
2.0
6.0
12.0
1.5
4.5
8.5
TA = −40°C to +85°C
CL = 50 pF
Min
Max
2.0
17.0
2.5
18.5
2.0
13.0
2.5
14.0
1.5
9.0
1.5
9.5
2.0
13.0
1.5
9.0
Units
ns
ns
ns
ns
ns
ns
ns
ns
Capacitance
Symbol
CIN
CPD
Parameter
Input Capacitance
Power Dissipation Capacitance
Typ
4.5
70.0
Units
pF
pF
Conditions
VCC = OPEN
VCC = 5.0V
5
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