TC74ACT240F Ver la hoja de datos (PDF) - Toshiba
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TC74ACT240F Datasheet PDF : 8 Pages
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TC74ACT240,244P/F/FT
Electrical Characteristics
DC Characteristics
Characteristics
Symbol
High-level input
voltage
VIH
Test Condition
―
Ta =
Ta = 25°C
−40 to 85°C
Unit
VCC
(V)
Min
Typ.
Max
Min
Max
4.5
to 2.0
―
―
2.0
―
V
5.5
Low-level input
voltage
VIL
4.5
―
to ―
―
0.8
―
0.8
V
5.5
High-level output
voltage
Low-level output
voltage
3-state output
off-state current
Input leakage
current
VOH
VOL
IOZ
IIN
VIN
IOH = −50 μA
4.5 4.4 4.5
―
4.4
―
= VIH or IOH = −24 mA
4.5 3.94 ―
― 3.80 ―
V
VIL
IOH = −75 mA (Note) 5.5 ―
―
― 3.85 ―
VIN
IOL = 50 μA
4.5 ―
0.0 0.1
―
0.1
= VIH or IOL = 24 mA
4.5 ―
― 0.36
― 0.44
V
VIL
IOL = 75 mA (Note) 5.5 ―
―
―
― 1.65
VIN = VIH or VIL
VOUT = VCC or GND
5.5 ―
― ±0.5 ― ±5.0 μA
VIN = VCC or GND
5.5 ―
― ±0.1 ― ±1.0 μA
Quiescent supply
current
ICC
VIN = VCC or GND
Per input: VIN = 3.4 V
IC
Other input: VCC or GND
5.5 ―
5.5 ―
―
8.0
― 80.0 μA
― 1.35 ―
1.5 mA
Note:
This spec indicates the capability of driving 50 Ω transmission lines.
One output should be tested at a time for a 10 ms maximum duration.
AC Characteristics (CL = 50 pF, RL = 500 Ω, input: tr = tf = 3 ns)
Characteristics
Symbol
Test Condition
Ta = 25°C
Ta =
−40 to 85°C Unit
VCC (V) Min Typ. Max Min Max
Propagation delay
tpLH
time
tpHL
―
5.0 ± 0.5 ―
5.7 8.0 1.0 9.0
ns
Output enable time
tpZL
tpZH
―
5.0 ± 0.5 ―
6.0 9.0 1.0 10.5 ns
Output disable time
tpLZ
tpHZ
―
5.0 ± 0.5 ―
5.9 8.5 1.0 10.0 ns
Input capacitance
CIN
―
―
5
10
―
10
pF
Output capacitance
COUT
―
―
10
―
―
―
pF
Power dissipation
capacitance
CPD
TC74ACT240
(Note) TC74ACT244
―
25
―
―
―
pF
―
29
―
―
―
Note:
CPD is defined as the value of the internal equivalent capacitance which is calculated from the operating
current consumption without load.
Average operating current can be obtained by the equation:
ICC (opr) = CPD·VCC·fIN + ICC/8 (per bit)
4
2007-10-01
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