TC74LCX245F データシートの表示（PDF） - Toshiba
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TC74LCX245F Datasheet PDF : 10 Pages
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TC74LCX245F/FT/FK
Dynamic Switching Characteristics (Ta = 25°C, input: tr = tf = 2.5 ns, CL = 50 pF, RL = 500 Ω)
Characteristics
Quiet output maximum
dynamic VOL
Quiet output minimum
dynamic VOL
Symbol
Test Condition
VOLP VIH = 3.3 V, VIL = 0 V
|VOLV| VIH = 3.3 V, VIL = 0 V
Typ. Unit
VCC (V)
3.3
0.8
V
3.3
0.8
V
Capacitive Characteristics (Ta = 25°C)
Characteristics
Input capacitance
Bus input capacitance
Power dissipation capacitance
Symbol
CIN
CI/O
CPD
DIR, OE
An, Bn
fIN = 10 MHz
Test Condition
Typ. Unit
VCC (V)
3.3
7
pF
3.3
8
pF
(Note) 3.3
25
pF
Note:
CPD is defined as the value of the internal equivalent capacitance which is calculated from the operating
current consumption.
Average operating current can be obtained by the equation:
ICC (opr) = CPD･VCC･fIN + ICC/8 (per bit)
AC Test Circuit
Switch
Output
Open
6.0 V
GND
Measure
CL = 50 pF
RL = 500 Ω
Parameter
tpLH, tpHL
tpLZ, tpZL
tpHZ, tpZH
Switch
Open
6.0 V
GND
AC Waveform
Input
(An, Bn)
Output
(Bn, An)
Figure 1
tr 2.5 ns
tf 2.5 ns
90%
1.5 V
10%
tpLH
1.5 V
tpHL
Figure 2 tpLH, tpHL
2.7 V
GND
VOH
VOL
5
2007-10-19
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