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DM74AS257N Arkusz danych(PDF) 5 Page - Fairchild Semiconductor

Numer części DM74AS257N
Szczegółowy opis  3-STATE Quad 1 of 2 Line Data Selector/Multiplexers
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Producent  FAIRCHILD [Fairchild Semiconductor]
Strona internetowa  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

DM74AS257N Arkusz danych(HTML) 5 Page - Fairchild Semiconductor

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©1986 Fairchild Semiconductor Corporation
www.fairchildsemi.com
DM74AS257, DM74AS258 Rev. 1.2
5
DM74AS257 Switching Characteristics
Over recommended operating free air temperature range.
DM74AS258 Switching Characteristics
Over recommended operating free air temperature range.
Symbol
Parameter
Conditions
From
To
Min
Max
Units
tPLH
Propagation Delay Time,
LOW-to-HIGH Level Output
VCC = 4.5V to 5.5V,
CL = 50 pF,
RL = 500Ω
Data
Any Y
1
5.5
ns
tPHL
Propagation Delay Time,
HIGH-to-LOW Level Output
16
ns
tPLH
Propagation Delay Time,
LOW-to-HIGH Level Output
Select
Any Y
2
11
ns
tPHL
Propagation Delay Time,
HIGH-to-LOW Level Output
210
ns
tPZH
Output Enable Time to HIGH
Level
OUTPUT
Control
Any Y
2
7.5
ns
tPZL
Output Enable Time to LOW
Level
2
9.5
ns
tPHZ
Output Disable Time from HIGH
Level
OUTPUT
Control
Any Y
1.5
6.5
ns
tPLZ
Output Disable Time from LOW
Level
27
ns
Symbol
Parameter
Conditions
From
To
Min.
Max.
Units
tPLH
Propagation Delay Time,
LOW-to-HIGH Level Output
VCC = 4.5V to 5.5V,
CL = 50pF,
RL = 500Ω
Data
Any Y
1
5
ns
tPHL
Propagation Delay Time,
HIGH-to-LOW Level Output
14
ns
tPLH
Propagation Delay Time,
LOW-to-HIGH Level Output
Select
Any Y
2
9.5
ns
tPHL
Propagation Delay Time,
HIGH-to-LOW Level Output
210
ns
tPZH
Output Enable Time to HIGH
Level
OUTPUT
Control
Any Y
2
8
ns
tPZL
Output Enable Time to LOW
Level
210
ns
tPHZ
Output Disable Time, from HIGH
Level
OUTPUT
Control
Any Y
1.5
6
ns
tPLZ
Output Disable Time from LOW
Level
2
6.5
ns


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