dm74as257 Fairchild Semiconductor, dm74as257 Datasheet - Page 4

• Manufacturer Part Number: dm74as257
• Description: 3-state Quad 1 Of 2 Line Data Selector/multiplexers
• Manufacturer: Fairchild Semiconductor

www.fairchildsemi.com
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DM74AS257 Switching Characteristics
over recommended operating free air temperature range
PLH
PHL
PLH
PHL
PZH
PZL
PHZ
PLZ
DM74AS258 Switching Characteristics
over recommended operating free air temperature range
PLH
PHL
PLH
PHL
PZH
PZL
PHZ
PLZ
Symbol
Symbol
Propagation Delay Time,
LOW-to-HIGH Level Output
Propagation Delay Time,
HIGH-to-LOW Level Output
Propagation Delay Time,
LOW-to-HIGH Level Output
Propagation Delay Time,
HIGH-to-LOW Level Output
Output Enable Time to
HIGH Level
Output Enable Time to
LOW Level
Output Disable Time,
from HIGH Level
Output Disable Time,
from LOW Level
Propagation Delay Time,
LOW-to-HIGH Level Output
Propagation Delay Time,
HIGH-to-LOW Level Output
Propagation Delay Time,
LOW-to-HIGH Level Output
Propagation Delay Time,
HIGH-to-LOW Level Output
Output Enable Time to
HIGH Level
Output Enable Time to
LOW Level
Output Disable Time,
from HIGH Level
Output Disable Time,
from LOW Level
Parameter
Parameter
OUTPUT
OUTPUT
OUTPUT
OUTPUT
Control
Control
Control
Control
Select
Select
From
From
Data
Data
Any
Any
Any
Any
Any
Any
Any
Any
To
To
Y
Y
Y
Y
Y
Y
Y
Y
4
V
C
R
V
C
R
CC
CC
L
L
L
L
50 pF,
500
50 pF,
500
4.5V to 5.5V,
4.5V to 5.5V,
Conditions
Conditions
Min
Min
1.5
1.5
1
1
2
2
2
2
2
1
1
2
2
2
2
2
Max
Max
5.5
7.5
9.5
6.5
9.5
6.5
11
10
10
10
6
7
5
4
8
6
Units
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns