DM74LS243 데이터 시트보기 (PDF) - Fairchild Semiconductor
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DM74LS243 Datasheet PDF : 5 Pages
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Switching Characteristics
at VCC = 5V, TA = 25°C
Symbol
Parameter
tPLH
Propagation Delay Time
LOW-to-HIGH Level Output
tPHL
Propagation Delay Time
HIGH-to-LOW Level Output
tPZL
Output Enable Time
to LOW Level
tPZH
Output Enable Time
to HIGH Level
tPLZ
Output Disable Time
from LOW Level
tPHZ
Output Disable Time
from HIGH Level
tPLH
Propagation Delay Time
LOW-to-HIGH Level Output
tPHL
Propagation Delay Time
HIGH-to-LOW Level Output
tPZL
Output Enable Time
to LOW Level
tPZH
Output Enable Time
to HIGH Level
CL = 45 pF
RL = 667Ω
CL = 45 pF
RL = 667Ω
CL = 45 pF
RL = 667Ω
CL = 45 pF
RL = 667Ω
CL = 5 pF
RL = 667Ω
CL = 5 pF
RL = 667Ω
CL = 150 pF
RL = 667Ω
CL = 150 pF
RL = 667Ω
CL = 150 pF
RL = 667Ω
CL = 150 pF
RL = 667Ω
Conditions
Min
Max
Units
18
ns
18
ns
30
ns
23
ns
25
ns
18
ns
21
ns
22
ns
33
ns
26
ns
3
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