74AC157 查看數據表（PDF） - Fairchild Semiconductor
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74AC157 Datasheet PDF : 9 Pages
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AC Electrical Characteristics for ACT
Symbol
Parameter
tPLH
Propagation Delay
S to Zn
tPHL
Propagation Delay
S to Zn
tPLH
Propagation Delay
E to Zn
tPHL
Propagation Delay
E to Zn
tPLH
Propagation Delay
In to Zn
tPHL
Propagation Delay
In to Zn
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
TA = +25°C
CL = 50 pF
Min
Typ
Max
2.0
5.5
9.0
2.0
5.5
9.5
1.5
6.0
10.0
1.5
5.0
8.5
1.5
4.0
7.0
1.5
4.5
7.5
Capacitance
TA = −40°C to +85°C
CL = 50 pF
Min
Max
1.5
10.0
2.0
10.5
1.5
11.5
1.0
9.0
1.0
8.5
1.0
8.5
Symbol
CIN
CPD
Parameter
Input Capacitance
Power Dissipation Capacitance
Typ
Units
Conditions
4.5
50.0
pF
VCC = OPEN
pF
VCC = 5.0V
Units
ns
ns
ns
ns
ns
ns
5
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