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Part Name
Description
DM74ALS251 View Datasheet(PDF) - Fairchild Semiconductor
Part Name
Description
Manufacturer
DM74ALS251
3-STATE 1-of-8 Line Data Selector/Multiplexer
Fairchild Semiconductor
DM74ALS251 Datasheet PDF : 7 Pages
1
2
3
4
5
6
7
Switching Characteristics
over recommended operating free air temperature range
Symbol
Parameter
Conditions
From
To
t
PLH
Propagation Delay Time
V
CC
=
4.5V to 5.5V
Select
LOW-to-HIGH Level Output
C
L
=
50 pF
Y
t
PHL
Propagation Delay Time
R
L
=
500
Ω
Select
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
Select
W
Select
t
PLH
Propagation Delay Time
LOW-to-HIGH Level Output
t
PHL
Propagation Delay Time
HIGH-to-LOW Level Output
Data
Y
Data
t
PLH
Propagation Delay Time
LOW-to-HIGH Level Output
t
PHL
Propagation Delay Time
HIGH-to-LOW Level Output
Data
W
Data
t
PZH
Output Enable Time
to HIGH Level
t
PZL
Output Enable Time
to LOW Level
Output Control
Y
Output Control
t
PZH
Output Enable Time
to HIGH Level
t
PZL
Output Enable Time
to LOW Level
Output Control
W
Output Control
t
PHZ
Output Disable Time
from HIGH Level
t
PLZ
Output Disable Time
from LOW Level
Output Control
Y
Output Control
t
PHZ
Output Disable Time
from HIGH Level
t
PLZ
Output Disable Time
from LOW Level
Output Control
W
Output Control
Min
Max
Units
5
18
ns
8
24
ns
8
24
ns
7
23
ns
2
10
ns
3
15
ns
3
15
ns
3
15
ns
3
15
ns
3
15
ns
3
15
ns
3
15
ns
2
10
ns
1
10
ns
2
10
ns
1
10
ns
www.fairchildsemi.com
4
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