74AC244CW Ver la hoja de datos (PDF) - Fairchild Semiconductor
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74AC244CW Datasheet PDF : 9 Pages
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AC Electrical Characteristics for AC
Symbol
Parameter
tPLH
Propagation Delay
Data to Output
tPHL
Propagation Delay
Data to Output
tPZH
Output Enable Time
tPZL
Output Enable Time
tPHZ
Output Disable Time
tPLZ
Output Disable Time
Note 7: Voltage Range 3.3 is 3.3V ± 0.3V
Voltage Range 5.0 is 5.0V ± 0.5V
VCC
(V)
(Note 7)
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
TA = +25°C
CL = 50 pF
Min
Typ
Max
2.0
6.5
9.0
1.5
5.0
7.0
2.0
6.5
9.0
1.5
5.0
7.0
2.0
6.0
10.5
1.5
5.0
7.0
2.5
7.5
10.0
1.5
5.5
8.0
3.0
7.0
10.0
2.5
6.5
9.0
2.5
7.5
10.5
2.0
6.5
9.0
TA = −55°C to +125°C TA = −40°C to +85°C
CL = 50 pF
CL = 50 pF
Min
Max
Min
Max
1.0
12.5
1.5
10.0
1.0
9.5
1.0
7.5
1.0
12.0
2.0
10.0
1.0
9.0
1.0
7.5
1.0
11.5
1.5
11.0
1.0
9.0
1.5
8.0
1.0
13.0
2.0
11.0
1.0
10.5
1.5
8.5
1.0
12.5
1.5
10.5
1.0
10.5
1.0
9.5
1.0
13.0
2.5
11.5
1.0
11.0
2.0
9.5
Units
ns
ns
ns
ns
ns
ns
AC Electrical Characteristics for ACT
Symbol
Parameter
tPLH
Propagation Delay
Data to Output
tPHL
Propagation Delay
Data to Output
tPZH
Output Enable Time
tPZL
Output Enable Time
tPHZ
Output Disable Time
tPLZ
Output Disable Time
Note 8: Voltage Range 5.0 is 5.0V ± 0.5V
VCC
(V)
(Note 8)
5.0
TA = +25°C
CL = 50 pF
Min
Typ
Max
2.0
6.5
9.0
TA = −55°C to +125°C TA = −40°C to +85°C
CL = 50 pF
CL = 50 pF
Min
Max
Min
Max
Units
1.0
10.0
1.5
10.0
ns
5.0
2.0
7.0
9.0
1.0
5.0
1.5
6.0
8.5
1.0
5.0
2.0
7.0
9.5
1.0
5.0
2.0
7.0
9.5
1.0
5.0
2.5
7.5
10.0
1.0
10.0
1.5
10.0
ns
9.5
1.0
9.5
ns
11.0
1.5
10.5
ns
11.0
1.5
10.5
ns
11.5
2.0
10.5
ns
Capacitance
Symbol
CIN
CPD
Parameter
Input Capacitance
Power Dissipation Capacitance
Typ
Units
Conditions
4.5
45.0
pF
VCC = OPEN
pF
VCC = 5.0V
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