DM74ALS240A データシートの表示（PDF） - Fairchild Semiconductor
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DM74ALS240A Datasheet PDF : 9 Pages
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Switching Characteristics DM74ALS240A
Over recommended operating free air temperature range.
Symbol
Parameter
tPLH Propagation Delay Time,
LOW-to-HIGH Level Output
tPHL Propagation Delay Time,
HIGH-to-LOW Level Output
tPZH Output Enable Time to HIGH
Level Output
tPZL Output Enable Time to LOW
Level Output
tPHZ Output Disable Time from
HIGH Level Output
tPLZ Output Disable Time from
LOW Level Output
Conditions
VCC = 4.5V to 5.5V,
CL = 50pF,
R1 = 500Ω,
R2 = 500Ω,
TA = Min. to Max.
From
(Input)
A
To
(Output) Min. Max. Units
Y
2
9
ns
2
9
ns
G
Y
3
13
ns
3
18
ns
G
Y
2
10
ns
3
12
ns
Switching Characteristics DM74ALS241A
Over recommended operating free air temperature range.
Symbol
Parameter
Conditions
tPLH Propagation Delay Time,
VCC = 4.5V to 5.5V,
LOW-to-HIGH Level Output CL = 50pF,
tPHL Propagation Delay Time,
R1 = 500Ω,
HIGH-to-LOW Level Output R2 = 500Ω,
tPZH Output Enable Time to HIGH TA = Min. to Max.
Level Output
tPZL Output Enable Time to HIGH
Level Output
tPHZ Output Disable Time to HIGH
Level Output
tPLZ Output Disable Time to LOW
Level Output
tPZH Output Enable Time to HIGH
Level Output
tPZL Output Enable Time to LOW
Level Output
tPHZ Output Disable Time from
HIGH Level Output
tPLZ Output Disable Time from
LOW Level Output
From
(Input)
A
To
(Output) Min. Max. Units
Y
3
11
ns
3
10
ns
1G
Y
3
21
ns
3
21
ns
1G
Y
2
10
ns
3
15
ns
2G
Y
7
21
ns
7
21
ns
2G
Y
2
10
ns
3
15
ns
©1986 Fairchild Semiconductor Corporation
DM74ALS240A, DM74ALS241A Rev. 1.3
5
www.fairchildsemi.com
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