UNISONIC TECHNOLOGIES CO., LTD
U74LVC2G240
DUAL BUFFER/DRIVER WITH
3-STATE OUTPUTS
DESCRIPTION
MSOP-8
CMOS IC
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 V
CC
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 I
OFF
. The I
OFF
circuitry disables the outputs and
prevents damaging current backflow through the device when it is
powered down.
TSSOP-8
FEATURES
* Wide Supply Voltage Range from 1.65V to 5.5V
* Max t
PD
of 4.6 ns at 3.3V
* Up to 5.5V Inputs Accept Voltages
* Low Power Consumption, I
CC
= 10
μA
(Max.)
* ±24 mA Output Driver at 3.3V
* Typical V
OLP
(Output Ground Bounce) < 0.8V,
V
CC
= 3.3 V, T
A
= 25 °C
* Typical V
OHV
(Output V
OH
Undershoot) > 2V,
V
CC
= 3.3 V, T
A
= 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
TSSOP-8
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QW-R502-433.B
U74LVC2G240
PIN CONFIGURATION
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
6
1OE
1A
2
1Y
2OE
2A
7
3
5
2Y
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U74LVC2G240
ABSOLUTE MAXIMUM RATING
PARAMETER
SYMBOL
V
CC
V
IN
RATINGS
-0.5~6.5
-0.5~6.5
CMOS IC
Supply Voltage
Input Voltage
Output Voltage
V
OUT
-0.5~6.5
V
(any output in the high-impedance or power-off state)
Output Voltage
V
OUT
-0.5~V
CC
+0.5
V
(any output in the high or low state)
Input Clamp Current
I
IK
-50
mA
Output Clamp Current
I
OK
-50
mA
Output Current
I
OUT
±50
mA
V
CC
or GND Current
I
CC
±100
mA
Storage Temperature
T
STG
-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.
UNIT
V
V
THERMAL DATA
PARAMETER
SYMBOL
MSOP-8
TSSOP-8
θ
JA
RATINGS
220
190
UNIT
°C/W
°C/W
Junction to Ambient
RECOMMENDED OPERATING CONDITIONS
PARAMETER
SYMBOL
V
CC
CONDITIONS
Operating
Data retention only
V
CC
= 1.65V to 1.95V
V
CC
= 2.3V to 2.7V
V
CC
= 3V to 3.6V
V
CC
= 4.5V to 5.5V
V
CC
= 1.65V to 1.95V
V
CC
= 2.3V to 2.7V
V
CC
= 3V to 3.6V
V
CC
= 4.5V to 5.5V
High or low state
3-state
V
CC
=1.65V
V
CC
=2.3V
V
CC
=3V
V
CC
=4.5V
V
CC
=1.65V
V
CC
=2.3V
MIN
1.65
1.5
0.65× V
CC
TYP
Supply Voltage
MAX
5.5
UNIT
V
High-Level Input Voltage
V
IH
1.7
2
0.7×V
CC
V
0.35×V
CC
0.7
V
0.8
0.3×V
CC
5.5
V
V
CC
V
5.5
-4
-8
mA
-16
-24
-32
4
8
mA
16
24
32
20
ns/V
10
5
85
°C
Low-Level Input Voltage
Input Voltage
Output Voltage
V
IL
V
IN
V
OUT
0
0
0
High-Level Output Current
I
OH
Low-Level Output Current
I
OL
V
CC
=3V
V
CC
=4.5V
V
CC
=1.8±0.15V, 2.5±0.2V
V
CC
=3.3±0.3V
V
CC
=5.0+0.5V
-40
Input Transition Rise or Fall Rate
Operating Temperature
t
R
/ t
F
T
OPR
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QW-R502-433.B
U74LVC2G240
CMOS IC
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U74LVC2G240
PARAMETER
SYMBOL
TEST CONDITIONS
I
OH
= -100
μA
V
CC
= 1.65V ~ 5.5V
I
OH
= -4 mA
V
CC
= 1.65V
I
OH
= -8 mA
V
CC
= 2.3V
I
OH
= -16 mA
V
CC
= 3V
I
OH
= -24 mA
V
CC
= 3V
V
CC
= 4.5V
I
OH
= -32 mA
I
OL
= 100
μA
V
CC
= 1.65V ~ 5.5V
I
OL
= 4 mA
V
CC
= 1.65V
I
OL
= 8 mA
V
CC
= 2.3V
I
OL
= 16 mA
V
CC
= 3V
I
OL
= 24 mA
V
CC
= 3V
I
OL
= 32 mA
V
CC
= 4.5V
V
IN
= 5.5V or GND, V
CC
= 0 ~ 5.5V
V
IN
or V
O
= 5.5V, V
CC
= 0V
V
O
= 0 ~ 5.5V, V
CC
= 3.6V
V
IN
= 5.5V or GND, I
OUT
= 0,
V
CC
= 1.65V ~ 5.5V
One input at V
CC
– 0.6V;
other inputs at V
CC
or GND;
V
CC
=3V ~ 5.5V
V
IN
= V
CC
or GND, V
CC
=3.3V
V
OUT
= V
CC
or GND, V
CC
=3.3V
MIN
TYP
V
CC
-0.1
1.2
1.9
2.4
2.3
3.8
CMOS IC
ELECTRICAL CHARACTERISTICS
(T
A
=25°C , V
CC
= 3.3 V, unless otherwise specified)
MAX UNIT
High-Level Output Voltage
V
OH
V
Low-Level Output Voltage
V
OL
0.1
0.45
0.3
0.4
0.55
0.55
±5
±10
10
10
500
4
6
V
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
I
I(LEAK)
I
OFF
I
OZ
I
Q
I
Q
C
IN
C
OUT
μA
μA
μA
μA
μA
pF
pF
SWITCHING CHARACTERISTICS
(T
A
=25°C, unless otherwise specified)
PARAMETER
SYMBOL
TEST CONDITIONS
V
CC
=1.8±0.15V, R
L
=1KΩ
C
L
=30pF
V
CC
=2.5±0.2V, R
L
=500Ω
V
CC
=3.3±0.3V,
R
L
=500Ω
R
L
=500Ω C
L
=50pF
V
CC
=5±0.5V,
R
L
=500Ω
V
CC
=1.8±0.15V, R
L
=1KΩ
C
L
=30pF
V
CC
=2.5±0.2V, R
L
=500Ω
V
CC
=3.3±0.3V
R
L
=500Ω C
L
=50pF
V
CC
=5±0.5V
V
CC
=1.8±0.15V, R
L
=1KΩ
C
L
=30pF
V
CC
=2.5±0.2V, R
L
=500Ω
V
CC
=3.3±0.3V
R
L
=500Ω C
L
=50pF
V
CC
=5±0.5V
MIN
2
1.4
1.1
1
2.7
1.9
1.4
1.1
1.7
0.8
1.2
0.5
TYP
MAX UNIT
11.3
5.5
4.6
4
11.7
6.6
5.4
5
12.8
5.7
5.5
4.2
ns
Propagation Delay
from Input A to Output Y
t
PLH
/ t
PHL
(t
PD
)
Propagation Delay
from Input
OE
to Output Y
t
PZL
/ t
PZH
(t
EN
)
ns
Propagation Delay
from Input
OE
to Output Y
t
PLZ
/ t
PHZ
(t
DIS
)
ns
OPERATING CHARACTERISTICS
(T
A
=25°C, unless otherwise specified)
PARAMETER
SYMBOL
TEST CONDITIONS
V
CC
= 1.8V
V
CC
= 2.5V
Outputs enabled
f=10MHz
V
CC
= 3.3V
V
CC
= 5V
V
CC
= 1.8V
Outputs
V
CC
= 2.5V
f=10MHz
disabled
V
CC
= 3.3V
V
CC
= 5V
MIN
TYP
MAX UNIT
pF
Power Dissipation Capacitance per
buffer/driver
C
PD
15
17
1
1
2
2
pF
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