Datasheet

UNISONIC TECHNOLOGIES CO., LTD
U74LVC2G240
CMOS IC
DUAL BUFFER/DRIVER WITH
3-STATE OUTPUTS

DESCRIPTION
The U74LVC2G240 is a dual buffer or driver with 3-state
outputs. It is designed for 1.65V to 5.5V operation.
The U74LVC2G240 is composed of two 1-bit buffers/drivers
with separate output-enable ( OE ) inputs. When OE is low, data
passes from A (input) to Y (output). When OE is high, the
outputs are in the high-impedance state.
To ensure the high-impedance state during power up or power
down, OE should be tied to VCC through a pull-up resistor, and
the minimum value of the resistor is determined by the
current-sinking capability of the driver.
The U74LVC2G240 is fully specified for partial-power-down
applications using IOFF. The IOFF circuitry disables the outputs and
prevents damaging current backflow through the device when it is
powered down.

MSOP-8
TSSOP-8
FEATURES
* Wide Supply Voltage Range from 1.65V to 5.5V
* Max tPD of 4.6 ns at 3.3V
* Up to 5.5V Inputs Accept Voltages
* Low Power Consumption, ICC = 10 μA (Max.)
* ±24 mA Output Driver at 3.3V
* Typical VOLP (Output Ground Bounce) < 0.8V,
VCC = 3.3 V, TA = 25 °C
* Typical VOHV (Output VOH Undershoot) > 2V,
VCC = 3.3 V, TA = 25 °C

ORDERING INFORMATION
Ordering Number
U74LVC2G240G-P08-R
U74LVC2G240G-SM1-R

Package
TSSOP-8
MSOP-8
Packing
Tape Reel
Tape Reel
MARKING
MSOP-8
www.unisonic.com.tw
Copyright © 2016 Unisonic Technologies Co., Ltd
TSSOP-8
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U74LVC2G240
CMOS IC

PIN CONFIGURATION

FUNCTION TABLE (Each Buffer)
INPUTS
OE
L
L
H

OUTPUT
Y
L
H
Z
A
H
L
X
LOGIC DIAGRAM (Positive Logic)
1OE
1A
2OE
2A
1
6
2
1Y
7
3
5
2Y
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U74LVC2G240

CMOS IC
ABSOLUTE MAXIMUM RATING
PARAMETER
SYMBOL
RATINGS
UNIT
Supply Voltage
VCC
-0.5~6.5
V
Input Voltage
VIN
-0.5~6.5
V
Output Voltage
VOUT
-0.5~6.5
V
(any output in the high-impedance or power-off state)
Output Voltage
VOUT
-0.5~VCC+0.5
V
(any output in the high or low state)
Input Clamp Current
IIK
-50
mA
Output Clamp Current
IOK
-50
mA
Output Current
IOUT
±50
mA
VCC or GND Current
ICC
±100
mA
Storage Temperature
TSTG
-65 ~ +150
°C
Note: 1. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
2. Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.

THERMAL DATA
PARAMETER
Junction to Ambient

SYMBOL
MSOP-8
TSSOP-8
θJA
RATINGS
220
190
UNIT
°C/W
°C/W
RECOMMENDED OPERATING CONDITIONS
PARAMETER
Supply Voltage
High-Level Input Voltage
SYMBOL
VCC
VIH
Low-Level Input Voltage
VIL
Input Voltage
VIN
Output Voltage
High-Level Output Current
VOUT
IOH
CONDITIONS
Operating
Data retention only
VCC = 1.65V to 1.95V
VCC = 2.3V to 2.7V
VCC = 3V to 3.6V
VCC = 4.5V to 5.5V
VCC = 1.65V to 1.95V
VCC = 2.3V to 2.7V
VCC = 3V to 3.6V
VCC = 4.5V to 5.5V
High or low state
3-state
VCC=1.65V
VCC=2.3V
MIN
1.65
1.5
IOL
Input Transition Rise or Fall Rate
tR / t F
Operating Temperature
TOPR
1.7
2
0.7×VCC
0
0
0
VCC=3V
VCC=3V
VCC=4.5V
VCC=1.8±0.15V, 2.5±0.2V
VCC=3.3±0.3V
VCC=5.0+0.5V
UNISONIC TECHNOLOGIES CO., LTD
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MAX
5.5
UNIT
V
0.65× VCC
VCC=4.5V
VCC=1.65V
VCC=2.3V
Low-Level Output Current
TYP
-40
V
0.35×VCC
0.7
V
0.8
0.3×VCC
5.5
V
VCC
V
5.5
-4
-8
mA
-16
-24
-32
4
8
mA
16
24
32
20
ns/V
10
5
85
°C
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U74LVC2G240
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CMOS IC
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U74LVC2G240

CMOS IC
ELECTRICAL CHARACTERISTICS (TA =25°C , VCC = 3.3 V, unless otherwise specified)
PARAMETER
High-Level Output Voltage
Low-Level Output Voltage
Input Leakage Current
(A or OE inputs)
OFF-State Current
High-Impedance State Current
Quiescent Supply Current
SYMBOL
VOH
VOL
II(LEAK)
IOFF
IOZ
IQ
Additional quiescent Supply
Current
 IQ
Input Capacitance
Output Capacitance
CIN
COUT

MIN
TYP
VCC -0.1
1.2
1.9
2.4
2.3
3.8
MAX UNIT
V
0.1
0.45
0.3
0.4
0.55
0.55
V
VIN = 5.5V or GND, VCC = 0 ~ 5.5V
±5
μA
VIN or VO = 5.5V, VCC = 0V
VO = 0 ~ 5.5V, VCC = 3.6V
VIN = 5.5V or GND, IOUT = 0,
VCC = 1.65V ~ 5.5V
One input at VCC – 0.6V;
other inputs at VCC or GND;
VCC=3V ~ 5.5V
VIN = VCC or GND, VCC=3.3V
VOUT = VCC or GND, VCC=3.3V
±10
10
μA
μA
10
μA
500
μA
4
6
pF
pF
SWITCHING CHARACTERISTICS (TA =25°C, unless otherwise specified)
PARAMETER
SYMBOL
Propagation Delay
from Input A to Output Y
tPLH / tPHL
(tPD)
Propagation Delay
from Input OE to Output Y
tPZL / tPZH
(tEN)
Propagation Delay
from Input OE to Output Y
tPLZ / tPHZ
(tDIS)

TEST CONDITIONS
IOH = -100 μA
VCC = 1.65V ~ 5.5V
IOH = -4 mA
VCC = 1.65V
IOH = -8 mA
VCC = 2.3V
IOH = -16 mA
VCC = 3V
IOH = -24 mA
VCC = 3V
VCC = 4.5V
IOH = -32 mA
IOL = 100 μA
VCC = 1.65V ~ 5.5V
IOL = 4 mA
VCC = 1.65V
IOL = 8 mA
VCC = 2.3V
IOL = 16 mA
VCC = 3V
IOL = 24 mA
VCC = 3V
IOL = 32 mA
VCC = 4.5V
TEST CONDITIONS
VCC=1.8±0.15V, RL=1KΩ
CL=30pF
VCC=2.5±0.2V, RL=500Ω
VCC=3.3±0.3V,
RL=500Ω
RL=500Ω CL=50pF
VCC=5±0.5V,
RL=500Ω
VCC=1.8±0.15V, RL=1KΩ
CL=30pF
VCC=2.5±0.2V, RL=500Ω
VCC=3.3±0.3V
RL=500Ω CL=50pF
VCC=5±0.5V
VCC=1.8±0.15V, RL=1KΩ
CL=30pF
VCC=2.5±0.2V, RL=500Ω
VCC=3.3±0.3V
RL=500Ω CL=50pF
VCC=5±0.5V
MIN
2
1.4
TYP
MAX UNIT
11.3
5.5
1.1
4.6
1
4
2.7
1.9
1.4
1.1
1.7
0.8
1.2
0.5
11.7
6.6
5.4
5
12.8
5.7
5.5
4.2
ns
ns
ns
OPERATING CHARACTERISTICS (TA =25°C, unless otherwise specified)
PARAMETER
Power Dissipation Capacitance per
buffer/driver
SYMBOL
CPD
TEST CONDITIONS
VCC = 1.8V
VCC = 2.5V
Outputs enabled
f=10MHz
VCC = 3.3V
VCC = 5V
VCC = 1.8V
Outputs
VCC = 2.5V
f=10MHz
disabled
VCC = 3.3V
VCC = 5V
UNISONIC TECHNOLOGIES CO., LTD
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MIN
TYP
15
17
1
1
2
2
MAX UNIT
pF
pF
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U74LVC2G240

CMOS IC
TEST CIRCUIT AND WAVEFORMS
TEST
tPLH/tPHL
tPLZ/tPZL
tPHZ/tPZH
INPUTS
VCC
1.8V±0.15V
2.5V±0.2V
3.3V±0.3V
5V±0.5V
VIN
VCC
VCC
3V
VCC
tR, tF
≤2ns
≤2ns
≤2.5ns
≤2.5ns
S1
Open
VLOAD
GND
VM
VLOAD
CL
RL
V∆
VCC/2
VCC/2
1.5V
VCC/2
2*VCC
2*VCC
6V
2*VCC
30pF
30pF
50pF
50pF
1KΩ
500Ω
500Ω
500Ω
0.15V
0.15V
0.3V
0.3V
Notes: 1. CL includes probe and jig capacitance.
2. All input pulses are supplied by generators having the following characteristics: PRR ≤10MHz, ZO = 50Ω.
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U74LVC2G240
CMOS IC
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
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