Document
UNISONIC TECHNOLOGIES CO., LTD U74LVC2G240
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.
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
Lead Free
Halogen Free
U74LVC2G240L-SM1-R
U74LVC2G240G-SM1-R
U74LVC2G240L-P08-R
U74LVC2G240G-P08-R
Package
MSOP-8 TSSOP-8
CMOS IC
MSOP-8
TSSOP-8
Packing Tape Reel Tape Reel
www.unisonic.com.tw Copyright © 2016 Unisonic Technologies Co., Ltd
1 of 6
QW-R502-433.B
U74LVC2G240
MARKING
MSOP-8
PIN CONFIGURATION
TSSOP-8
CMOS IC
FUNCTION TABLE (Each Buffer)
INPUTS
OE L L H
A H L X
OUTPUT Y L H Z
LOGIC DIAGRAM (Positive Logic) 1
1OE
1A 2
6 1Y
7 2OE
2A 5
3 2Y
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
2 of 6
QW-R502-433.B
U74LVC2G240
CMOS IC
ABSOLUTE MAXIMUM RATING
PARAMETER
SYMBOL
RATINGS
UNIT
Supply Voltage
VCC
-0.5~6.5
V
Input Voltage Output Voltage (any output in the high-impedance or power-off state)
VIN VOUT
-0.5~6.5 -0.5~6.5
V V
Output Voltage (any output in the high or low state)
VOUT
-0.5~VCC+0.5
V
Input Clamp Current
IIK -50 mA
Output Clamp Current Output Current
IOK -50 mA 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
MSOP-8 TSSOP-8
SYMBOL θJA
RATINGS 220 190
UNIT °C/W °C/W
RECOMMENDED OPERATING CONDITIONS
PARAMETER Supply Voltage High-Level Input Voltage
Low-Level Input Voltage Input Voltage Output Voltage
High-Level Output Current
Low-Level Output Current
Input Transition Rise or Fall Rate Operating Temperature
SYMBOL VCC VIH
VIL VIN 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
VCC=3V
VCC=4.5V VCC=1.65V VCC=2.3V IOL VCC=3V
tR / tF TOPR
VCC=4.5V VCC=1.8±0.15V, 2.5±0.2V VCC=3.3±0.3V VCC=5.0+0.5V
MIN 1.65 1.5
0.65× VCC
1.7 2 0.7×VCC
0 0 0
-40
TYP
MAX UNIT 5.5 V
V
0.35×VCC
0.7 0.8
V
0.3×VCC 5.5 V
VCC 5.5
V
-4
-8
-16 mA
-24
-32
4
8
16 mA
24
32
20
10 ns/V
5
85 °C
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
3 of 6
QW-R502-433.B
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 Additional quiescent Supply Current Input Capacitance Output Capacitance
SYMBOL VOH
VOL
TEST CONDITIONS VCC=1.65V~5.5V, IOH=-100μA VCC=1.65V, IOH=-4mA VCC=2.3V, IOH=-8mA VCC=3V, IOH=-16mA VCC=3V, IOH=-24mA VCC=4.5V, IOH=-32mA VCC=1.65V~5.5V, IOL=100μA VCC=1.65V. IOL=4mA VCC=2.3V, IOL=8mA VCC=3V, IOL=16mA VCC=3V, IOL=24mA VCC=4.5V, IOL=32mA
II(LEAK) VIN = 5.5V or GND, VCC = 0 ~ 5.5V
IOFF IOZ IQ
IQ
CIN COUT
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
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
V
0.55
0.55
±5 μA
±10 μA 10 μA
10 μA
500 μA
4 pF 6 pF
SWITCHING CHARACTERISTICS (TA =25°C, unless otherwise specified)
PARAMETER
Propagation Delay from Input A to Output Y
Propagation Delay from Input OE to Output Y
Propagation Delay from Input OE to Output Y
SYMBOL
TEST CONDITIONS
MIN TYP MAX UNIT
tPLH / tPHL (tPD)
VCC=1.8±0.15V,.