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DM74AS157 Datasheet(数据表) 4 Page - Fairchild Semiconductor

部件型号  DM74AS157
说明  Quad 1 of 2 Line Data Selector/Multiplexer
下载  7 Pages
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制造商  FAIRCHILD [Fairchild Semiconductor]
网页  http://www.fairchildsemi.com
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DM74AS157 Datasheet(HTML) 4 Page - Fairchild Semiconductor

   
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DM74AS157 Switching Characteristics
over recommended operating free air temperature range
DM74AS158 Switching Characteristics
over recommended operating free air temperature range
Symbol
Parameter
Conditions
From
To
Min
Max
Units
(Input)
(Output)
tPLH
Propagation Delay Time,
VCC = 4.5V to 5.5V,
Data
Y
1
6
ns
LOW-to-HIGH Level Output
CL = 50 pF,
tPHL
Propagation Delay Time,
RL = 500Ω
Data
Y
1
5.5
ns
HIGH-to-LOW Level Output
tPLH
Propagation Delay Time,
STROBE
Y2
10.5
ns
LOW-to-HIGH Level Output
tPHL
Propagation Delay Time,
STROBE
Y2
7.5
ns
HIGH-to-LOW Level Output
tPLH
Propagation Delay Time,
Select
Y
2
11
ns
LOW-to-HIGH Level Output
tPHL
Propagation Delay Time,
Select
Y
2
10
ns
HIGH-to-LOW Level Output
Symbol
Parameter
Conditions
From
To
Min
Max
Units
(Input)
(Output)
tPLH
Propagation Delay Time,
VCC = 4.5V to 5.5V,
Data
Y
1
5
ns
LOW-to-HIGH Level Output
CL = 50 pF,
tPHL
Propagation Delay Time,
RL = 500Ω
Data
Y
1
4.5
ns
HIGH-to-LOW Level Output
tPLH
Propagation Delay Time,
STROBE
Y2
6.5
ns
LOW-to-HIGH Level Output
tPHL
Propagation Delay Time,
STROBE
Y
2
10
ns
HIGH-to-LOW Level Output
tPLH
Propagation Delay Time,
Select
Y
2
9.5
ns
LOW-to-HIGH Level Output
tPHL
Propagation Delay Time,
Select
Y
2
10.5
ns
HIGH-to-LOW Level Output




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