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74ACT244SC bảng dữ liệu(PDF) 5 Page - ON Semiconductor

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Giải thích chi tiết về linh kiện  Octal Buffer/Line Driver with 3-STATE Outputs
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AC ELECTRICAL CHARACTERISTICS FOR AC
VCC (V)
(Note 6)
TA = +25°C,
CL = 50 pF
TA = −55°C to
+125°C
CL = 50 pF
TA = −40°C to
+85°C
CL = 50 pF
Symbol
Parameter
Min
Typ
Max
Min
Max
Min
Max
Unit
tPLH
Propagation Delay,
Data to Output
3.3
2.0
6.5
9.0
1.0
12.5
1.5
10.0
ns
5.0
1.5
5.0
7.0
1.0
9.5
1.0
7.5
tPHL
Propagation Delay,
Data to Output
3.3
2.0
6.5
9.0
1.0
12.0
2.0
10.0
ns
5.0
1.5
5.0
7.0
1.0
9.0
1.0
7.5
tPZH
Output Enable Time
3.3
2.0
6.0
10.5
1.0
11.5
1.5
11.0
ns
5.0
1.5
5.0
7.0
1.0
9.0
1.5
8.0
tPZL
Output Enable Time
3.3
2.5
7.5
10.0
1.0
13.0
2.0
11.0
ns
5.0
1.5
5.5
8.0
1.0
10.5
1.5
8.5
tPHZ
Output Disable Time
3.3
3.0
7.0
10.0
1.0
12.5
1.5
10.5
ns
5.0
2.5
6.5
9.0
1.0
10.5
1.0
9.5
tPLZ
Output Disable Time
3.3
2.5
7.5
10.5
1.0
13.0
2.5
11.5
ns
5.0
2.0
6.5
9.0
1.0
11.0
2.0
9.5
6. Voltage range 3.3 is 3.3 V ± 0.3 V. Voltage range 5.0 is 5.0 V ± 0.5 V.
AC ELECTRICAL CHARACTERISTICS FOR ACT
VCC (V)
(Note 7)
TA = +25°C,
CL = 50 pF
TA = −55°C to
+125°C
CL = 50 pF
TA = −40°C to
+85°C
CL = 50 pF
Symbol
Parameter
Min
Typ
Max
Min
Max
Min
Max
Unit
tPLH
Propagation Delay,
Data to Output
5.0
2.0
6.5
9.0
1.0
10.0
1.5
10.0
ns
tPHL
Propagation Delay,
Data to Output
5.0
2.0
7.0
9.0
1.0
10.0
1.5
10.0
ns
tPZH
Output Enable Time
5.0
1.5
6.0
8.5
1.0
9.5
1.0
9.5
ns
tPZL
Output Enable Time
5.0
2.0
7.0
9.5
1.0
11.0
1.5
10.5
ns
tPHZ
Output Disable Time
5.0
2.0
7.0
9.5
1.0
11.0
1.5
10.5
ns
tPLZ
Output Disable Time
5.0
2.5
7.5
10.0
1.0
11.5
2.0
10.5
ns
7. Voltage range 5.0 is 5.0 V ± 0.5 V.
CAPACITANCE
Symbol
Parameter
Conditions
Typ
Unit
CIN
Input Capacitance
VCC = OPEN
4.5
pF
CPD
Power Dissipation Capacitance
VCC = 5.0 V
45.0
pF



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