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DM74AS257M(2000) View Datasheet(PDF) - Fairchild Semiconductor

Part Name
Description
Manufacturer
DM74AS257M
(Rev.:2000)
Fairchild
Fairchild Semiconductor Fairchild
DM74AS257M Datasheet PDF : 6 Pages
1 2 3 4 5 6
DM74AS257 Switching Characteristics
over recommended operating free air temperature range
Symbol
Parameter
From
To
Conditions
tPLH
Propagation Delay Time,
LOW-to-HIGH Level Output
tPHL
Propagation Delay Time,
HIGH-to-LOW Level Output
tPLH
Propagation Delay Time,
LOW-to-HIGH Level Output
tPHL
Propagation Delay Time,
HIGH-to-LOW Level Output
Data
Any
VCC = 4.5V to 5.5V,
Y
CL = 50 pF,
RL = 500
Select
Any
Y
tPZH
Output Enable Time to
HIGH Level
tPZL
Output Enable Time to
LOW Level
OUTPUT Any
Control
Y
tPHZ
Output Disable Time,
from HIGH Level
tPLZ
Output Disable Time,
from LOW Level
OUTPUT Any
Control
Y
DM74AS258 Switching Characteristics
over recommended operating free air temperature range
Symbol
Parameter
From
To
Conditions
tPLH
Propagation Delay Time,
LOW-to-HIGH Level Output
tPHL
Propagation Delay Time,
HIGH-to-LOW Level Output
tPLH
Propagation Delay Time,
LOW-to-HIGH Level Output
tPHL
Propagation Delay Time,
HIGH-to-LOW Level Output
Data
Any
VCC = 4.5V to 5.5V,
Y
CL = 50 pF,
RL = 500
Select
Any
Y
tPZH
Output Enable Time to
HIGH Level
tPZL
Output Enable Time to
LOW Level
OUTPUT Any
Control
Y
tPHZ
Output Disable Time,
from HIGH Level
tPLZ
Output Disable Time,
from LOW Level
OUTPUT Any
Control
Y
Min
Max
Units
1
5.5
ns
1
6
ns
2
11
ns
2
10
ns
2
7.5
ns
2
9.5
ns
1.5
6.5
ns
2
7
ns
Min
Max
Units
1
5
ns
1
4
ns
2
9.5
ns
2
10
ns
2
8
ns
2
10
ns
1.5
6
ns
2
6.5
ns
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