Datasheet

UNISONIC TECHNOLOGIES CO., LTD
U74LVC2G126
CMOS IC
DUAL BUS BUFFER GATE
WITH 3-STATE OUTPUTS

DESCRIPTION
MSOP-8
The U74LVC2G126 consists of two bus buffers with 3-state
output controlled by enable input (nOE), when nOE is low, the output
is disabling.
Inputs can be driven from either 3.3V or 5V devices, so the
device can be used in a mix 3.3V/5V system.
This device is full specified for partial power-down protective
circuit, preventing the backflow current through the device when it is
powered down.

TSSOP-8
FEATURES
* Operation voltage range: 1.65~5.5V
* Support 5V VCC operation
* Low power dissipation
* Input accept voltage to 5.5V

ORDERING INFORMATION
Ordering Number
U74LVC2G126G-P08-R
U74LVC2G126G-SM1-R

Package
TSSOP-8
MSOP-8
Packing
Tape Reel
Tape Reel
MARKING
MSOP-8
www.unisonic.com.tw
Copyright © 2015 Unisonic Technologies Co., Ltd
TSSOP-8
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U74LVC2G126


PIN CONFIGURATION
1OE
1
8
VCC
1A
2
7
2OE
2Y
3
6
1Y
GND
4
5
2A
FUNCTION TABLE (each gate)
INPUT(nOE)
H
H
L

CMOS IC
INPUT(A)
L
H
X
OUTPUT(Y)
L
H
Z
LOGIC DIAGRAM (positive logic)
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
CMOS IC
ABSOLUTE MAXIMUM RATING (unless otherwise specified)
PARAMETER
SYMBOL
VCC
VIN
RATINGS
-0.5~6.5
-0.5~6.5
Enable
-0.5~VCC+0.5
Output Voltage
Disable
VOUT
-0.5~6.5
Power-down
-0.5~6.5
VCC or GND Current
ICC
±100
Input Clamp Current(VIN<0)
IIK
-50
Output Clamp Current(VOUT<0)
IOK
±50
Output Current
IOUT
±50
Power Dissipation
PD
300
Storage Temperature
TSTG
-65 ~ +150
Note: 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.
Supply Voltage
Input Voltage

RECOMMENDED OPERATING CONDITIONS
PARAMETER
Supply Voltage
Input Voltage
Enable
Output Voltage
Disable
Power-down
Input Transition Rise or Fall Rate
Operating Temperature

UNIT
V
V
V
V
V
mA
mA
mA
mA
mW
C
SYMBOL
VCC
VIN
VOUT
tR, tF
CONDITIONS
VCC =1.65~5.5V
VCC =1.65~5.5V
VCC =0V
VCC =1.65~2.7V
VCC =2.7~5.5V
TA
MIN
1.65
0
0
0
0
0
0
-40
TYP
MAX
5.5
5.5
VCC
5.5
5.5
20
10
125
UNIT
V
V
V
V
V
ns/V
ns/V
C
MIN
TYP
MAX
UNIT
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
µA
µA
µA
STATIC CHARACTERISTICS (TA=25C, unless otherwise specified)
PARAMETER
Positive-Going Input Threshold Voltage
Negative-Going Input Threshold
Voltage
High-Level Output Voltage
Low-Level Output Voltage
Input Leakage Current
Output OFF -State Current
Power OFF Leakage Current
SYMBOL
VT+
VT-
VOH
VOL
II(LEAK)
IOZ
IOFF
TEST CONDITIONS
VCC=1.65V~1.95V
VCC=2.3V~2.7V
VCC=2.7V~3.6V
VCC=4.5V~5.5V
VCC=1.65V~1.95V
VCC=2.3V~2.7V
VCC=2.7V~3.6V
VCC=4.5V~5.5V
VCC=1.65V~5.5V, IOH=-100μA
VCC=1.65V, IOH=-4mA
VCC=2.3V, IOH=-8mA
VCC=2.7V, IOH=-12mA
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=2.7V, IOL=12mA
VCC=3V, IOL=24mA
VCC=4.5V, IOL=32mA
VCC=5.5V, VIN=5.5V or GND
VCC=3.6V, VOUT=VCC or GND
VCC=0V, VIN or VOUT =5.5V
UNISONIC TECHNOLOGIES CO., LTD
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0.65×VCC
1.7
2
0.7×VCC
0.35×VCC
0.7
0.8
0.3×VCC
VCC–0.1
1.2
1.9
2.2
2.3
3.8
±0.1
±0.1
±0.1
0.1
0.45
0.3
0.4
0.55
0.55
±5
±10
±10
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CMOS IC
STATIC CHARACTERISTICS(Cont.)
PARAMETER
Quiescent Supply Current
SYMBOL
IQ
Additional Quiescent Supply Current
 IQ
Input Capacitance
CIN

MIN
TEST CONDITIONS
VCC=1.8V±0.15V
VCC=2.5V±0.2V
VCC=2.7V
VCC=3.3V±0.3V
VCC=5.0V±0.5V
VCC=1.8V±0.15V
VCC=2.5V±0.2V
VCC=2.7V
VCC=3.3V±0.3V
VCC=5.0V±0.5V
VCC=1.8V±0.15V
VCC=2.5V±0.2V
VCC=2.7V
VCC=3.3V±0.3V
VCC=5.0V±0.5V
MIN
1
0.5
1
0.5
0.5
1.0
1.0
1.0
1.0
0.5
1
0.5
1
1
0.5
TYP
MAX
UNIT
0.1
10
µA
5
500
µA
2
pF
DYNAMIC CHARACTERISTICS
PARAMETER
SYMBOL
Propagation Delay From
Input(A) to Output(Y)
tPHL/tPLH
Propagation Delay From
Input(nOE) to Output(Y)
tPZH/tPZL
Propagation Delay From
Input(nOE) to Output(Y)
tPLZ/tPHZ

TEST CONDITIONS
VCC=5.5V, VIN=VCC or GND
IOUT=0
VCC=2.3V~5.5V, One input at
VCC- 0.6V, other inputs at VCC
or GND
VIN=VCC or GND
TYP
3.9
2.6
2.8
2.4
1.9
4.1
2.6
2.8
2.4
1.8
3.3
1.9
3.0
2.5
1.8
MAX
9.8
4.9
4.7
4.3
3.2
10
5
4.7
4.1
3.1
12.6
5.7
4.8
4.4
3.3
UNIT
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
TYP
17
5
MAX
UNIT
pF
pF
OPERATING CHARACTERISTICS (TA=25C, unless otherwise specified)
PARAMETER
Power Dissipation Capacitance
SYMBOL
CPD
TEST CONDITIONS
Output Enable
Output Disable
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MIN
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
CMOS IC
TEST CIRCUIT AND WAVEFORMS
S
VEXT
Open
From Output
CL
(Note)
RL
TEST
tPLH/tPHL
tPHZ/tPZH
tPLZ/tPZL
GND
RL
S
Open
GND
VEXT
Note : CL includes probe and jig capacitance.
VCC
1.8V±0.15V
2.5V±0.2V
2.7V
3.3V±0.3V
5V±0.5V
VIN
VCC
VCC
2.7V
2.7 V
VCC
tR, tF
≤2ns
≤2ns
≤2.5ns
≤2.5ns
≤2.5ns
VM
VCC/2
VCC/2
1.5V
1.5V
VCC/2
VEXT
2* VCC
2* VCC
6V
6V
2* VCC
CL
30pF
30pF
50pF
50pF
50pF
RL
1KΩ
500Ω
500Ω
500Ω
500Ω
V△
0.15V
0.15V
0.3V
0.3V
0.3V
VOE
VM
VM
tPHZ
Output
VOH-V△
tPZH
VM
tPLZ
Output
VOL+V△
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tPZL
VM
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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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