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DM74ALS257SJ 데이터 시트보기 (PDF) - Fairchild Semiconductor
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DM74ALS257SJ
3-STATE Quad 1-of-2-Line Data Selector/Multiplexer
Fairchild Semiconductor
DM74ALS257SJ Datasheet PDF : 7 Pages
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Switching Characteristics DM74ALS257
over recommended operating free air temperature range
Symbol
Parameter
Conditions
t
PLH
Propagation Delay Time
LOW-to-HIGH Level Output
t
PHL
Propagation Delay Time
HIGH-to-LOW Level Output
t
PLH
Propagation Delay Time
LOW-to-HIGH Level Output
t
PHL
Propagation Delay Time
HIGH-to-LOW Level Output
t
ZH
Output Enable Time
to HIGH Level
t
ZL
Output Enable Time
to LOW Level
t
HZ
Output Disable Time
from HIGH Level
t
LZ
Output Disable Time
from LOW Level
V
CC
=
4.5V to 5.5V
C
L
=
50 pF
R
L
=
500
Ω
Switching Characteristics DM74ALS258
over recommended operating free air temperature range
Symbol
Parameter
Conditions
t
PLH
Propagation Delay Time
LOW-to-HIGH Level Output
t
PHL
Propagation Delay Time
HIGH-to-LOW Level Output
t
PLH
Propagation Delay Time
LOW-to-HIGH Level Output
t
PHL
Propagation Delay Time
HIGH-to-LOW Level Output
t
ZH
Output Enable Time
to HIGH Level
t
ZL
Output Enable Time
to LOW Level
t
HZ
Output Disable Time
from HIGH Level
t
LZ
Output Disable Time
from LOW Level
V
CC
=
4.5V to 5.5V
C
L
=
50 pF
R
L
=
500
Ω
From
To
Min
Max
Units
Data
Any Y
2
10
ns
Data
Any Y
2
12
ns
Select
Any Y
4
18
ns
Select
Any Y
5
Output
Any Y
4
Control
Output
Any Y
5
Control
Output
Any Y
2
Control
Output
Any Y
3
Control
22
ns
16
ns
18
ns
10
ns
15
ns
From
To
Min
Max
Units
Data
Any Y
2
8
ns
Data
Any Y
2
7
ns
Select
Any Y
3
20
ns
Select
Any Y
5
Output
Any Y
5
Control
Output
Any Y
5
Control
Output
Any Y
2
Control
Output
Any Y
3
Control
25
ns
18
ns
18
ns
10
ns
18
ns
www.fairchildsemi.com
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