Datasheet

UNISONIC TECHNOLOGIES CO., LTD
U74LVC126A
CMOS IC
QUADRUPLE BUS BUFFER
GATES WITH 3-STATE
OUTPUTS

DESCRIPTION
The U74LVC126A are quadruple bus buffer gates featuring
independent line drivers with 3-state outputs. When OE is low, the
nY outputs are in a high-impedance state. When OE is high, the
device passes non-inverted data from the nA input to its nY output.
To ensure the high-impedance state during power up or power
down, OE should be tied to GND through a pull-down resistor; the
minimum value of the resistor is determined by the current-sinking
capability of the driver.
Inputs can be driven from either 3.3V to 5V devices. This feature
allows the use of these devices as translators in a mixed 3.3V/5V
system environment.

FEATURES
* 1.65V to 3.6V VCC Operation
* Max tPD of 4.7ns from A to Y at VCC = 3.3V, CL = 50pF, RL = 500Ω
* ±24mA output driver at 3V

ORDERING INFORMATION
Ordering Number
U74LVC126AG-S14-R
U74LVC126AG-P14-R

Package
SOP-14
TSSOP-14
Packing
Tape Reel
Tape Reel
MARKING
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Copyright © 2015 Unisonic Technologies Co., Ltd
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CMOS IC

PIN CONFIGURATION

FUNCTION TABLE
INPUT
OE
H
H
L

OUTPUT
Y
H
L
Z
A
H
L
X
LOGIC DIAGRAM (positive logic)
1OE
1A
2OE
2A
1
2
3OE
3
1Y
4
5
4OE
6
2Y
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3A
4A
10
9
8
3Y
13
12
11
4Y
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
CMOS IC
ABSOLUTE MAXIMUM RATING (unless otherwise specified)
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~VCC +0.5
V
Input Clamp Current (VIN<0)
IIK
-50
mA
Output Clamp Current (VOUT<0, or VOUT>VCC)
IOK
-50
mA
Output Current
IOUT
±50
mA
VCC or GND Current
ICC
±100
mA
PD
mW
Power Dissipation
500
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
Junctions to Ambient

SYMBOL
SOP-14
TSSOP-14
θJA
RATINGS
86
113
UNIT
°C/W
RECOMMENDED OPERATING COMDITIONS
PARAMETER
SYMBOL
Supply Voltage
VCC
High-Level Input Voltage
VIH
Low-Level Input Voltage
VIL
Input Voltage
Output Voltage
VIN
VOUT
High-Level Output Current
IOH
Low-Level Output Current
IOL
Input Transition Rise or Fall Rate
Operating Temperature
CONDITIONS
Operating
Data retention only
VCC = 1.65V to 1.95V
VCC = 2.3V to 2.7V
VCC = 2.7V to 3.6V
VCC = 1.65V to 1.95V
VCC = 2.3V to 2.7V
VCC = 2.7V to 3.6V
0
0
VCC = 1.65V
VCC = 2.3V
VCC = 2.7V
VCC = 3V
VCC = 1.65V
VCC = 2.3V
VCC = 2.7V
VCC = 3V
t/V
TA
UNISONIC TECHNOLOGIES CO., LTD
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MIN
1.65
1.5
VCC×0.65
1.7
2
0
-40
TYP
MAX
3.6
UNIT
V
V
VCC×.35
0.7
0.8
5.5
VCC
-4
-8
-12
-24
4
8
12
24
10
85
V
V
V
mA
mA
ns/V
°C
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
ELECTRICAL CHARACTERISTICS (TA =25°C , unless otherwise specified)
PARAMETER
High-Level Output Voltage
Low-Level Output Voltage
Input Leakage Current
(A or OE input)
High-impedance state Current
Quiescent Supply Current
Additional quiescent supply
current
Input Capacitance
Output Capacitance

CMOS IC
SYMBOL
VOH
VOL
II(LEAK)
IOZ
ICC
∆ICC
CIN
COUT
MIN
VCC-0.2
1.2
1.7
2.2
2.4
2.3
TYP
MAX
UNIT
V
0.1
0.45
0.7
0.4
0.55
V
VIN = 5.5V or GND, VCC = 3.6V
±1
μA
VOUT = VCC or GND, VCC = 3.6V
VIN = VCC or GND, IOUT = 0, VCC = 3.6V
One input at VCC - 0.6V,VCC =2.7V to
3.6V, other inputs at VCC or GND
VIN = VCC or GND, VCC=3.3V
VOUT = VCC or GND, VCC=3.3V
±1
1
μA
μA
500
μA
4.5
7
pF
pF
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
Propagation delay from input
OE to output Y
Skew between any two outputs
of the same package switching
in the same direction

TEST CONDITIONS
IOH = -100μA, VCC = 1.65V to 3.6V
IOH = -4mA, VCC = 1.65V
IOH = -8mA, VCC = 2.3V
IOH = -12mA, VCC = 2.7V
IOH = -12mA, VCC = 3V
IOH = -24mA, VCC = 3V
IOL = 100μA, VCC = 1.65V to 3.6V
IOL = 4mA, VCC = 1.65V
IOL = 8mA, VCC = 2.3V
IOL = 12mA, VCC = 2.7V
IOL = 24mA, VCC = 3V
tEN
tDIS
tSK(O)
TEST CONDITIONS
VCC =1.8V
VCC =2.5V ±0.2V
VCC =2.7V
VCC =3.3V ±0.3V
VCC =1.8V
VCC =2.5V ±0.2V
VCC =2.7V
VCC =3.3V ±0.3V
VCC =1.8V
VCC =2.5V ±0.2V
VCC =2.7V
VCC =3.3V ±0.3V
MIN
TYP
13.2
1
MAX
UNIT
ns
7.2
5.2
4.7
1
14.3
1
ns
8.3
6.3
5.7
1
14.7
1
ns
8.7
6.7
6
1.3
VCC =3.3V ±0.3V
1
ns
MAX
UNIT
pF
pF
pF
pF
pF
pF
OPERATING CHARACTERISTICS (TA =25°C , unless otherwise specified)
PARAMETER
SYMBOL
Power dissipation capacitance
per gate
CPD
TEST CONDITIONS
VCC =1.8V
f=10MHz, Outputs
VCC =2.5V
enable
VCC =3.3V
VCC =1.8V
f=10MHz, Outputs
VCC =2.5V
disabled
VCC =3.3V
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MIN
TYP
20
21
22
2
3
4
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
CMOS IC
TEST CIRCUIT AND WAVEFORMS
TEST
tPLH/tPHL
tPLZ/tPZL
tPHZ/tPZH
Input
VCC
1.8V±0.15V
2.5V±0.2V
2.7V
3.3V±0.3V
S1
VCC = 2.5V±0.2V
Open
VLOAD
GND
VCC =1.8V±0.15V
Open
VLOAD
GND
tR, tF
≤2ns
≤2ns
≤2ns
≤2ns
VIN
VCC
VCC
VCC
VCC
VCC = 2.7V AND 3.3V±0.3V
Open
6V
GND
VM
VLOAD
CL
RL
V∆
VCC/2
VCC/2
1.5V
1.5V
2*VCC
2*VCC
6V
6V
30pF
30pF
50pF
50pF
1kΩ
500Ω
500Ω
500Ω
0.15V
0.15V
0.3V
0.3V
VIN
Input
VM
VM
0V
tPHL
tPLH
VOH
Output
VM
VM
VOL
tPLH
tPHL
VOH
VM
Output
VM
VOL
Voltage Waveforms Propagation Delay Times
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
CMOS IC
TEST CIRCUIT AND WAVEFORMS(Cont.)
Notes: 1. CL includes probe and jig capacitance.
2. All input pulses are supplied by generators having the following characteristics: PRR ≤1MHz, ZO = 50Ω.
3. tPLH and tPHL are the same as tPD.
4. tPZL and tPZH are the same as tEN.
5. tPLZ and tPHZ are the same as tDIS..
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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