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74LVC245ADTR2G Datasheet(PDF) 5 Page - ON Semiconductor

No. de pieza 74LVC245ADTR2G
Descripción Electrónicos  Low-Voltage CMOS Octal Buffer
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Fabricante Electrónico  ONSEMI [ON Semiconductor]
Página de inicio  http://www.onsemi.com
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74LVC245ADTR2G Datasheet(HTML) 5 Page - ON Semiconductor

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AC ELECTRICAL CHARACTERISTICS (tR = tF = 2.5 ns)
Symbol
Parameter
Conditions
−40 to +85
5C
−40 to +125
5C
Unit
Min
Typ
(Note 4)
Max
Min
Typ
(Note 4)
Max
tpd
Propagation Delay (Note 5)
An to Bn, Bn to An
VCC = 1.2 V
17.0
ns
VCC = 1.65 V to 1.95 V
1.5
6.5
14.6
1.0
16.9
VCC = 2.3 V to 2.7 V
1.0
3.4
7.6
1.0
8.7
VCC = 2.7 V
1.0
3.4
7.3
1.0
9.5
VCC = 3.0 V to 3.6 V
1.0
2.9
6.3
1.0
8.0
ten
Enable Time (Note 6)
OE to An, Bn
VCC = 1.2 V
22.0
ns
VCC = 1.65 V to 1.95 V
1.0
8.3
19.5
1.0
22.5
VCC = 2.3 V to 2.7 V
1.0
4.6
10.7
1.0
12.4
VCC = 2.7 V
1.0
4.8
9.5
0.5
12.0
VCC = 3.0 V to 3.6 V
0.5
3.7
8.5
0.5
11.0
tdis
Disable Time (Note 7)
OE to An, Bn
VCC = 1.2 V
12.0
ns
VCC = 1.65 V to 1.95 V
1.0
5.5
12.3
1.0
14.2
VCC = 2.3 V to 2.7 V
1.0
3.1
7.1
1.0
8.2
VCC = 2.7 V
1.0
3.9
8.0
0.5
10.0
VCC = 3.0 V to 3.6 V
0.5
3.6
7.0
0.5
9.0
tsk(0)
Output Skew Time (Note 8)
1.0
1.5
ns
4. Typical values are measured at TA = 25°C and VCC = 3.3 V, unless stated otherwise.
5. tpd is the same as tPLH and tPHL.
6. ten is the same as tPZL and tPZH.
7. tdis is the same as tPLZ and tPHZ.
8. Skew between any two outputs of the same package switching in the same direction. This parameter is guaranteed by design.
DYNAMIC SWITCHING CHARACTERISTICS
Symbol
Characteristic
Condition
TA = +25°C
Unit
Min
Typ
Max
VOLP
Dynamic LOW Peak Voltage (Note 9)
VCC = 3.3 V, CL = 50 pF, VIH = 3.3 V, VIL = 0 V
VCC = 2.5 V, CL = 30 pF, VIH = 2.5 V, VIL = 0 V
0.8
0.6
V
V
VOLV
Dynamic LOW Valley Voltage (Note 9)
VCC = 3.3 V, CL = 50 pF, VIH = 3.3 V, VIL = 0 V
VCC = 2.5 V, CL = 30 pF, VIH = 2.5 V, VIL = 0 V
−0.8
−0.6
V
V
9. Number of outputs defined as “n”. Measured with “n−1” outputs switching from HIGH−to−LOW or LOW−to−HIGH. The remaining output is
measured in the LOW state.
CAPACITIVE CHARACTERISTICS
Symbol
Parameter
Condition
Typical
Unit
CIN
Input Capacitance (OE, T/R)
VCC = 3.3 V, VI = 0 V or VCC
4.0
pF
CI/O
Input/Output Capacitance
VCC = 3.3 V, VI = 0 V or VCC
10.0
pF
CPD
Power Dissipation Capacitance
(Note 10)
Per input; VI = GND or VCC
pF
VCC = 1.65 V to 1.95 V
7.7
VCC = 2.3 V to 2.7 V
11.3
VCC = 3.0 V to 3.6 V
14.4
10. CPD is used to determine the dynamic power dissipation (PD in mW).
PD = CPD x VCC2 x fi x N + S(CL x VCC2 x fo) where:
fi = input frequency in MHz; fo = output frequency in MHz
CL = output load capacitance in pF
VCC = supply voltage in Volts
N = number of outputs switching
S(CL x VCC2 x fo) = sum of the outputs.


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