U74AC244 Ver la hoja de datos (PDF) - Unisonic Technologies
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U74AC244 Datasheet PDF : 6 Pages
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U74AC244
CMOS IC
ELECTRICAL CHARACTERISTICS (TA =25°C , unless otherwise specified)
PARAMETER
High-Level Output Voltage
SYMBOL
VOH
Low-Level Output Voltage
VOL
Input Leakage Current
(A or OE inputs)
II(LEAK)
High-impedance state Current
IOZ
Quiescent Supply Current
ICC
Input Capacitance
CIN
SWITCHING CHARACTERISTICS
TEST CONDITIONS
IOH = -50 μA, VCC = 3V
IOH = -50 μA, VCC = 4.5V
IOH = -50 μA, VCC = 5.5V
IOH = -12 mA, VCC = 3V
IOH = -24 mA, VCC = 4.5V
IOH = -24 mA, VCC = 5.5V
IOL = 50 μA, VCC = 3V
IOL = 50 μA, VCC = 4.5V
IOL = 50 μA, VCC = 5.5V
IOL = 12 mA, VCC = 3V
IOL = 24 mA, VCC = 4.5V
IOL = 24 mA, VCC = 5.5V
MIN TYP MAX UNIT
2.9
4.4
5.4
V
2.56
3.86
4.86
0.1
0.1
0.1 V
0.36
0.36
0.36
VIN = VCC or GND, VCC = 5.5V
±0.1 μA
VO = VCC or GND, VCC = 5.5V
VI(OE) = VIL or VIH
VIN = VCC or GND, IOUT = 0, VCC = 5.5V
VIN = VCC or GND, VCC=5V
±0.25 μA
4 μA
2.5
pF
PARAMETER
Propagation delay from input A to
output Y, tpd
SYMBOL
tPLH
tPHL
Propagation delay from input OE to
tPZH
output Y, ten
tPZL
Propagation delay from input OE to
tPHZ
output Y, tdis
tPLZ
OPERATING CHARACTERISTICS
TEST CONDITIONS
VCC=3.3±0.3V, CL=50pF, RL=500Ω
VCC=5±0.5V, CL=50pF, RL=500Ω
VCC=3.3±0.3V, CL=50pF, RL=500Ω
VCC=5±0.5V, CL=50pF, RL=500Ω
VCC=3.3±0.3V, CL=50pF, RL=500Ω
VCC=5±0.5V, CL=50pF, RL=500Ω
VCC=3.3±0.3V, CL=50pF, RL=500Ω
VCC=5±0.5V, CL=50pF, RL=500Ω
VCC=3.3±0.3V, CL=50pF, RL=500Ω
VCC=5±0.5V, CL=50pF, RL=500Ω
VCC=3.3±0.3V, CL=50pF, RL=500Ω
VCC=5±0.5V, CL=50pF, RL=500Ω
MIN TYP MAX UNIT
2 6.5 9 ns
1.5 5 7
2 6.5 9 ns
1.5 5 7
2
6 10.5 ns
1.5 5 7
2.5 7.5 10 ns
1.5 5.5 8
3
7 10 ns
2.5 6.5 9
2.5 7.5 10.5 ns
2 6.5 9
PARAMETER
Power dissipation capacitance per
buffer/driver
SYMBOL
TEST CONDITIONS
Cpd
VCC = 5V, f=1MHz, CL=50pF
TYP UNIT
45 pF
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
4 of 6
QW-R502-784.A
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