Datasheet

UNISONIC TECHNOLOGIES CO., LTD
U74AHC2G126
CMOS IC
DUAL BUS BUFFER GATE
WITH 3-STATE OUTPUTS

DESCRIPTION
The U74AHC2G126 consists of two bus buffers with 3-state
output controlled by enable input (nOE), when nOE is low, the output
is disable.

FEATURES
* Wide supply voltage range from 2.0V to 5.5V
* Low static power consumption; ICC=2μA (Max.)
* ±8mA output driver at 5V

ORDERING INFORMATION
Ordering Number
U74AHC2G126G-P08-R

Package
TSSOP-8
Packing
Tape Reel
MARKING
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Copyright © 2016 Unisonic Technologies Co., Ltd
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PIN CONFIGURATION
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FUNCTION TABLE
CMOS IC
INPUT(OE)
INPUT(A)
OUTPUT(Y)
H
L
L
H
H
H
L
X
Z
Note: H: High voltage level; L: Low voltage level; Z: High impedance; X: Don’care

LOGIC DIAGRAM (positive logic)
Logic symbol
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IEC Logic symbol
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CMOS IC
ABSOLUTE MAXIMUM RATING
PARAMETER
SYMBOL
CONDITIONS
RATINGS
UNIT
Supply Voltage
VCC
-0.5 ~ +7.0
V
Input Voltage
VIN
-0.5 ~ +7.0
V
Output Voltage
VOUT
-0.5 ~ VCC +0.5
V
Continuous VCC or GND
ICC
50
mA
Current
Continuous Output Current
IOUT
VOUT=0V ~ VCC
±25
mA
Input Clamp Current
IIK
VIN<0V
-20
mA
Output Clamp Current
IOK
VOUT>VCC or VOUT<0V
±20
mA
Storage Temperature Range
TSTG
-65 ~ +150
°C
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.

RECOMMENDED OPERATING CONDITIONS
PARAMETER
SYMBOL
Supply Voltage
VCC
Input Voltage
Output Voltage
Operating Temperature
(Note)
Input Transition Rise or Fall
Rate
VIN
VOUT
TEST CONDITIONS
Operating
Data retention only
High or low state
MIN
2.0
1.5
0
0
TYP
-40
TA
VCC=3.3V±0.3V
VCC=5V±0.5V
Note: This condition is only determined from design. It can't be 100% tested in mass production.

∆t/∆v
MAX
5.5
5.5
VCC
UNIT
V
V
V
V
125
°C
100
20
ns/V
ns/V
MAX
0.1
0.1
0.1
0.36
0.36
±0.1
UNIT
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
μA
±0.25
μA
2
μA
ELECTRICAL CHARACTERISTICS (TA =25°C , unless otherwise specified)
PARAMETER
SYMBOL
High-level Input Voltage
VIH
Low-level Input Voltage
VIL
High-Level Output Voltage
Low-Level Output Voltage
VOH
VOL
Input Leakage Current
3-state Output OFF-state
Current
II(LEAK)
Quiescent Supply Current
ICC
Input Capacitance
CI
IOZ
TEST CONDITIONS
VCC=2.0V
VCC=3.0V
VCC=5.5V
VCC=2.0V
VCC=3.0V
VCC=5.5V
VCC=2.0V
VCC=3.0V
IOH=-50μA
VCC=4.5V
VCC=3.0V, IOH=-4mA
VCC=4.5V, IOH=-8mA
VCC=2.0V
VCC=3.0V
IOH=-50μA
VCC=4.5V
VCC=3.0V, IOH=-4mA
VCC=4.5V, IOH=-8mA
VCC=5.5V, VIN= VCC or GND
VIN=VIH or VIL, VOUT=VCC or GND,
VCC =5.5V
VCC=5.5V, VIN=VCC or GND,
IOUT=0A
VCC=5.0V, VIN=VCC or GND
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MIN
1.5
2.1
3.85
TYP
0.5
0.9
1.65
1.9
2.9
4.4
2.58
3.94
2
3
4.5
2
pF
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CMOS IC
SWITCHING CHARACTERISTICS (TA =25°C , unless otherwise specified)
PARAMETER
SYMBOL
Propagation delay from
input (A) to output(Y)
tPD
Propagation delay from
input (OE) to output(Y)
ten
Propagation delay from
input (OE) to output(Y)
tdis

TEST CONDITIONS
VCC=3.3±0.3V
CL=15pF
VCC=5±0.5V
VCC=3.3±0.3V
CL=50pF
VCC=5±0.5V
VCC=3.3±0.3V
CL=15pF
VCC=5±0.5V
VCC=3.3±0.3V
CL=50pF
VCC=5±0.5V
VCC=3.3±0.3V
CL=15pF
VCC=5±0.5V
VCC=3.3±0.3V
CL=50pF
VCC=5±0.5V
MIN
TYP
MAX
9.5
6.5
13
8.5
9.5
6
13
8
11.5
8
15
10
UNIT
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
MAX
UNIT
OPERATING CHARACTERISTICS (f=10MHz, TA =25°C , unless otherwise specified)
PARAMETER
Power Dissipation
Capacitance
SYMBOL
CPD
TEST CONDITIONS
VCC=5V, No load.
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MIN
TYP
14
pF
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CMOS IC
TEST CIRCUIT AND WAVEFORMS
Notes: 1. CL includes probe and jig capacitance.
2. All input pulses are supplied by generators having the following characteristics: PRR ≤10MHz, ZO = 50Ω.
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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