74AC244 View Datasheet(PDF) - Fairchild Semiconductor
Part Name
Description
MFG CO.
74AC244 Datasheet PDF : 10 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 8: Voltage Range 3.3 is 3.3V r 0.3V
Voltage Range 5.0 is 5.0V r 0.5V
VCC
(V)
(Note 8)
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 25qC
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 55qC to 125qC TA 40qC to 85qC
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 9: Voltage Range 5.0 is 5.0V r 0.5V
VCC
(V)
(Note 9)
5.0
TA 25qC
CL 50 pF
Min
Typ
Max
2.0
6.5
9.0
TA 55qC to 125qC TA 40qC to 85qC
CL 50 pF
CL 50 pF
Min
Max
Min
Max
1.0
10.0
1.5
10.0
Units
ns
5.0
2.0
7.0
9.0
1.0
10.0
1.5
10.0
ns
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
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
4.5
45.0
Units
pF
pF
Conditions
VCC OPEN
VCC 5.0V
5
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