74ACT245PC 查看數據表（PDF） - Fairchild Semiconductor
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74ACT245PC Datasheet PDF : 10 Pages
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AC Electrical Characteristics for ACT
Symbol
Parameter
tPLH
Propagation Delay
An to Bn or Bn to An
tPHL
Propagation Delay
An to Bn or Bn to An
tPZH
Output Enable Time
tPZL
Output Enable Time
tPHZ
Output Disable Time
tPLZ
Output Disable Time
Note 9: Voltage Range 5.0 is 5.0V r 0.5V
VCC
(V)
(Note 9)
Min
5.0
1.5
5.0
1.5
5.0
1.5
5.0
1.5
5.0
1.5
5.0
2.0
Capacitance
Symbol
Parameter
Typ
CIN
Input Capacitance
CI/O
Input/Output Capacitance
CPD
Power Dissipation Capacitance
4.5
15.0
45.0
TA 25qC
CL 50 pF
Typ
Max
4.0
7.5
4.0
8.0
5.0
10.0
5.5
10.0
5.5
10.0
5.0
10.0
TA 40qC to 85qC
CL 50 pF
Min
Max
1.5
8.0
1.0
9.0
1.5
11.0
1.5
12.0
1.0
11.0
1.5
11.0
Units
pF
pF
pF
Conditions
VCC OPEN
VCC 5.0V
VCC 5.0V
Units
ns
ns
ns
ns
ns
ns
5
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