74AC521 查看數據表（PDF） - Fairchild Semiconductor
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74AC521 Datasheet PDF : 9 Pages
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AC Electrical Characteristics for ACT
Symbol
Parameter
tPLH
Propagation Delay
An or Bn to OA B
tPHL
Propagation Delay
An or Bn to OA B
tPLH
Propagation Delay
IA B to OA B
tPHL
Propagation Delay
IA B to OA B
Note 9: Voltage Range 5.0 is 5.0V r 0.5V
VCC
(V)
(Note 9)
Min
5.0
3.0
5.0
3.0
5.0
2.0
5.0
2.5
Capacitance
Symbol
Parameter
Typ
CIN
Input Capacitance
4.5
CPD
Power Dissipation Capacitance
40
TA 25qC
CL 50 pF
Typ
Max
5.5
9.0
TA 40qC to 85qC
CL 50 pF
Min
Max
2.5
9.5
6.0
10.0
2.5
11.0
4.0
6.5
2.0
7.0
5.0
7.5
2.0
8.0
Units
pF
pF
Conditions
VCC OPEN
VCC 5.0V
Units
ns
ns
ns
ns
5
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