DM74S244 查看數據表（PDF） - Fairchild Semiconductor
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产品描述 (功能)
比赛名单
DM74S244 Datasheet PDF : 4 Pages
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Switching Characteristics
VCC = 5V, TA = 25°C
Symbol
Parameter
tPLH
Propagation Delay Time
LOW-to-HIGH Level Output
tPHL
Propagation Delay Time
HIGH-to-LOW Level Output
tPZL
Output Enable Time to
LOW Level
tPZH
Output Enable Time to
HIGH Level
tPLZ
Output Disable Time
from Low Level
tPHZ
Output Disable Time
from High Level
tPLH
Propagation Delay Time
LOW-to-HIGH Level Output
tPHL
Propagation Delay Time
HIGH-to-LOW Level Output
tPZL
Output Enable Time to
LOW Level
tPZH
Output Enable Time to
HIGH Level
Conditions
Min
CL = 45 pF
RL = 90Ω
CL = 45 pF
RL = 90Ω
CL = 45 pF
RL = 90Ω
CL = 45 pF
RL= 90Ω
CL = 5 pF
RL = 90Ω
CL = 5 pF
RL = 90Ω
CL = 150 pF
RL = 90Ω
CL = 150 pF
RL = 90Ω
CL = 150 pF
RL = 90Ω
CL = 150 pF
RL = 90Ω
DM74S240
2
DM74S241, DM74244
2
DM74S240
2
DM74S241, DM74244
2
DM74S240
3
DM74S241, DM74244
3
DM74S240
2
DM74S241, DM74244
3
DM74S240
4
DM74S241, DM74244
2
DM74S240
2
DM74S241, DM74244
2
DM74S240
3
DM74S241, DM74244
4
DM74S240
3
DM74S241, DM74244
4
DM74S240
6
DM74S241, DM74244
6
DM74S240
4
DM74S241, DM74244
4
Max
Units
7
ns
9
7
ns
9
15
ns
15
10
ns
12
15
ns
15
9
ns
9
10
ns
12
10
ns
12
21
ns
21
12
ns
15
3
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