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DM74ALS251 View Datasheet(PDF) - Fairchild Semiconductor

Part Name
Description
Manufacturer
DM74ALS251
Fairchild
Fairchild Semiconductor Fairchild
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
tPLH
Propagation Delay Time
VCC = 4.5V to 5.5V
Select
LOW-to-HIGH Level Output
CL = 50 pF
Y
tPHL
Propagation Delay Time
RL = 500
Select
HIGH-to-LOW Level Output
tPLH
Propagation Delay Time
LOW-to-HIGH Level Output
tPHL
Propagation Delay Time
HIGH-to-LOW Level Output
Select
W
Select
tPLH
Propagation Delay Time
LOW-to-HIGH Level Output
tPHL
Propagation Delay Time
HIGH-to-LOW Level Output
Data
Y
Data
tPLH
Propagation Delay Time
LOW-to-HIGH Level Output
tPHL
Propagation Delay Time
HIGH-to-LOW Level Output
Data
W
Data
tPZH
Output Enable Time
to HIGH Level
tPZL
Output Enable Time
to LOW Level
Output Control
Y
Output Control
tPZH
Output Enable Time
to HIGH Level
tPZL
Output Enable Time
to LOW Level
Output Control
W
Output Control
tPHZ
Output Disable Time
from HIGH Level
tPLZ
Output Disable Time
from LOW Level
Output Control
Y
Output Control
tPHZ
Output Disable Time
from HIGH Level
tPLZ
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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