74LS390 데이터 시트보기 (PDF) - Fairchild Semiconductor
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74LS390 Datasheet PDF : 6 Pages
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Switching Characteristics
at VCC = 5V and TA = 25°C
Symbol
Parameter
fMAX
tPLH
tPHL
tPLH
tPHL
tPLH
tPHL
tPLH
tPHL
tPLH
tPHL
tPHL
Maximum Clock
Frequency
Propagation Delay Time
LOW-to-HIGH Level Output
Propagation Delay Time
HIGH-to-LOW Level Output
Propagation Delay Time
LOW-to-HIGH Level Output
Propagation Delay Time
HIGH-to-LOW Level Output
Propagation Delay Time
LOW-to-HIGH Level Output
Propagation Delay Time
HIGH-to-LOW Level Output
Propagation Delay Time
LOW-to-HIGH Level Output
Propagation Delay Time
HIGH-to-LOW Level Output
Propagation Delay Time
LOW-to-HIGH Level Output
Propagation Delay Time
HIGH-to-LOW Level Output
Propagation Delay Time
HIGH-to-LOW Level Output
From (Input)
To (Output)
A to QA
B to QB
A to QA
A to QA
A to QC
A to QC
B to QB
B to QB
B to QC
B to QC
B to QD
B to QD
Clear to Any Q
RL = 2 kΩ
CL = 15 pF
CL = 50 pF
Min
Max
Min
Max
25
20
20
15
20
24
20
30
60
81
60
81
21
27
21
33
39
51
39
54
21
27
21
33
39
45
Units
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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