UM3304/UM3304Q/UM3304QT

UM3304/UM3304Q/UM3304QT
4-Bit Bidirectional Voltage-Level Translator with Auto Direction
sensing and ±4kV ESD Protection
UM3304 CSP12 1.9×1.4
UM3304Q QFN14 3.5×3.5
UM3304QT QFN16 2.6×1.8
General Description
UM3304/UM3304Q/UM3304QT is quad channel level translator with auto direction sensing and
±4kV ESD protection. This 4-channel non-inverting translator uses two separate configurable
power-supply rails. The A port is designed to track VCCA. VCCA accepts any supply voltage from
1.2V to 3.6V. The B port is designed to track VCCB. VCCB accepts any supply voltage from 1.65V
to 5.5V. This allows for universal low-voltage bidirectional translation between any of the 1.2V,
1.5V, 1.8V, 2.5V, 3.3V, and 5V voltage nodes. Both I/O ports are auto-sensing; thus, no direction
pin is required, making it ideal for data transfer between low-voltage ASICs /PLDs and higher
voltage systems.
The UM3304/UM3304Q/UM3304QT operates at a guaranteed data rate of 20Mbps over the entire
specified operating voltage range. Within specific voltage domains, higher data rates are up to
100Mbps.
When the output-enable (OE) input is low, all outputs are placed in the high-impedance state. The
UM3304/UM3304Q/UM3304QT is designed so that the OE input circuit is designed to track
VCCA.
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-sourcing capability of the driver.
The UM3304 is a quad level translator available in 1.90mm×1.40mm CSP12 bump package while
the UM3304Q is packaged in a 3.50mm×3.50mm QFN14 package and the UM3304QT is
packaged in a 2.60mm ×1.80mm QFN16 package.
Applications
Features









Low-Voltage ASIC Level Translation
Cell-Phone Cradles
Portable POS Systems
Portable Communication Devices
Low-Cost Serial Interfaces
Cell-Phones
GPS
Telecommunications Equipment





1.2V to 3.6V on A Port and 1.65V to 5.5V
on B Port (VCCA ≤VCCB)
VCC Isolation Feature – If Either VCC
Input is at GND, All Outputs are in the
High-Impedance State
OE Input Circuit Referenced to VCCA
Low Power Consumption
Latch-Up Performance Exceeds 100mA
±4kV ESD Protection on B Ports
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UM3304/UM3304Q/UM3304QT
Pin Configurations
Top View
(Top View)
A B C D
B C D
3
3
YAAB
M
A
·
2
1
2
1
M: Month Code
UM3304
CSP12 1.9×1.4
(Top View)
A1
A2
A3
A4
NC
VCCA
VCCB
2
1
14
13
12
11
10
3
4
5
6
7
8
9
GND
OE
B1
B2
B3
B4
NC
UM
3304Q
XX
XX: Week Code
UM3304Q
QFN14 3.5×3.5
(Top View)
B1 B2 B3 B4
12
11
10
9
VCCB
13
8
NC
NC
14
7
GND
15
6
GND
VCCA
16
5
NC
1
2
3
4
A1 A2 A3 A4
/OE
3304
XX
XX: Week Code
UM3304QT
QFN16 2.6×1.8
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UM3304/UM3304Q/UM3304QT
Terminal Assignments for UM3304
3
A4
A3
A2
A1
D
C
B
A
2
GND
OE
VCCA
VCCB
1
B4
B3
B2
B1
Pin Description
UM3304
Pin
UM3304Q UM3304QT
Name
B2
1
16
VCCA
A3
B3
C3
D3
D2
2
3
4
5
6
7
1
2
3
4
5
6
A1
A2
A3
A4
NC
GND
C2
8
8
OE
D1
C1
B1
A1
A2
-
9
10
11
12
13
14
-
14
9
10
11
12
13
15
7
NC
B4
B3
B2
B1
VCCB
NC
GND
Function
A-Port supply voltage. 1.2V≤VCCA≤3.6V
and VCCA≤VCCB
Input/Output 1. Referenced to VCCA
Input/Output 2. Referenced to VCCA
Input/Output 3. Referenced to VCCA
Input/Output 4. Referenced to VCCA
Not connected. (Except for UM3304)
Ground
3-state output enable. Pull OE low to place
all outputs in 3-state mode. Referenced to
VCCA
Not connected. (Except for UM3304)
Input/Output 4. Referenced to VCCB
Input/Output 3. Referenced to VCCB
Input/Output 2. Referenced to VCCB
Input/Output 1. Referenced to VCCB
B-Port supply voltage. 1.65V≤VCCB≤5.5V
Not connected. (Only for UM3304QT)
Ground. (Only for UM3304QT)
Ordering Information
Part Number
UM3304
UM3304Q
UM3304QT
Packaging Type
CSP12 1.9×1.4
QFN14 3.5×3.5
QFN16 2.6×1.8
Marking Code
YAAB
UM3304Q
3304
Shipping Qty
3000pcs/7Inch Tape & Reel
3000pcs/13Inch Tape & Reel
3000pcs/7Inch Tape & Reel
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UM3304/UM3304Q/UM3304QT
Absolute Maximum Ratings (Note 1)
Over operating free-air temperature range (unless otherwise noted)
Symbol
Parameter
Value
Unit
VCCA
Supply Voltage Range
-0.5 to +4.5
V
VCCB
Supply Voltage Range
V
A ports
B ports
-0.5 to +6.5
-0.5 to +4.5
-0.5 to +6.5
A ports
-0.5 to +4.5
B ports
-0.5 to +6.5
A ports
-0.5 to ( VCCA+0.5)
B ports
-0.5 to ( VCCB+0.5)
VI
Input Voltage Range
VO
Voltage Range applied to any output
in the high-impedance or power-off
state
Voltage Range applied to any output
in the high or low state (Note 2)
VO
V
V
V
IIK
Input Clamp Current
VI＜0
-50
mA
IOK
Output Clamp Current
VO＜0
-50
mA
IO
Continuous Output Current
±50
mA
Continuous Current through VCCA, VCCB, or GND
±100
mA
TOP
Operating Temperature Range
-40 to +85
°C
TSTG
Storage Temperature Range
-65 to +150
°C
Note1. Stresses beyond those listed under "absolute maximum ratings" may cause permanent
damage to the device. These are stress ratings only, and functional operation of the device
at these or any other conditions beyond those indicated under "recommended operating
conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended
periods may affect device reliability.
Note2. The value of VCCA and VCCB are provided in the recommended operating conditions table.
Recommended Operating Conditions (Note 1, 2)
Symbol
VCCA
VCCB
VIH
VIL
VO
Δt/ΔV
Parameter
VCCA
VCCB
Supply Voltage
High Level Input
Voltage
Low Level Input
Voltage
Voltage range applied
to any output in the
high-impedance or
power-off state
Input Transition
Rise or Fall Time
Data Inputs
OE
Data Inputs
OE
1.2V to 3.6V
1.2V to 3.6V
1.2V to 3.6V
1.2V to 3.6V
1.65V to 5.5V
1.65V to 5.5V
1.65V to 5.5V
1.65V to 5.5V
1.2V to 3.6V
1.65V to 5.5V
A-Port
B-Port
A-Port Inputs
1.2V to 3.6V
B-Port Inputs
1.2V to 3.6V
1.65V to 5.5V
1.65V to 3.6V
4.5V to 5.5V
Min
Max
1.2
3.6
1.65
5.5
VCCI×0.65(Note3)
VCCI
VCCA×0.65
5.5
0
VCCI×0.35(Note3)
0
VCCA×0.35
0
3.6
0
5.5
Unit
V
V
V
V
V
V
V
40
40
30
ns/V
Note1. The A and B sides of an unused data I/O pair must be held in the same state, i.e., both at VCCI or both
at GND.
Note2. VCCA must be less than or equal to VCCB and must not exceed 3.6 V.
Note3. VCCI is the supply voltage associated with the input port.
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UM3304/UM3304Q/UM3304QT
Electrical Characteristics (Note 1, 2)
Over recommended operating free-air temperature range (unless otherwise noted)
II
Ioff
IOZ
Parameter
Test Conditions
VOHA
IOH=-20μA
VOLA
IOL=20μA
VOHB
VOLB
OE
A Port
B Port
A or B Port
ICCA
VI=VCCI or GND
IO=0
ICCB
VI=VCCI or GND
IO=0
ICCA +ICCB
ICCZA
ICCZB
Ci
CiO
IOH=-20μA
IOL=20μA
VI=VCCI or GND
VI or VO=0 to 3.6V
VI or VO=0 to 5.5V
OE=GND
OE
A Port
B Port
VI=VCCI or GND
IO=0
VI=VCCI or GND
IO=0, OE=GND
VI=VCCI or GND
IO=0, OE=GND
VCCA
VCCB
1.2V
1.4V to 3.6V
1.2V
1.4V to 3.6V
1.2V to 3.6V
0V
0V to 3.6V
1.2V to 3.6V
1.2V
1.4V to 3.6V
3.6V
0V
1.2V
1.4V to 3.6V
3.6V
0V
1.2V
1.4V to 3.6V
1.2V
1.4V to 3.6V
1.2V
1.4V to 3.6V
1.2V to 3.6V
1.65V to 5.5V
1.65V to 5.5V
1.65V to 5.5V
0V to 5.5V
0V
1.65V to 5.5V
1.65V to 5.5V
1.65V to 5.5V
0V
5.5V
1.65V to 5.5V
1.65V to 5.5V
0V
5.5V
1.65V to 5.5V
1.65V to 5.5V
1.65V to 5.5V
1.65V to 5.5V
1.65V to 5.5V
1.65V to 5.5V
1.65V to 5.5V
1.2V to 3.6V
1.65V to 5.5V
TA=25℃
-40℃ to 85℃
Unit
Typ
Max Min
Max
1.1
V
VCCA-0.4
0.9
V
0.4
VCCB-0.4
V
0.4
V
±1
±2
μA
±1
±2
μA
±1
±2
±1
±2
μA
0.06
5
μA
2
-2
3.4
5
μA
-2
2
3.5
μA
10
0.05
μA
5
3.3
μA
5
3
4
pF
5
6
pF
11
14
Note1. VCCI is the supply voltage associated with the input port.
Note2. VCCO is the supply voltage associated with the output port.
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UM3304/UM3304Q/UM3304QT
Switching Characteristics
TA=+25°C, VCCA= 1.2V
Parameter
tpd
ten
tdis
trA, tfA
trB, tfB
tSK(O)
Max data
rate
From
(Input)
A
B
To
(Output)
B
A
A
OE
B
A
OE
B
A port rise and
fall time
B port rise and
fall time
Channel-to-channel
VCCB=1.8V VCCB=2.5V VCCB=3.3V
Typ
Typ
Typ
7
6
5.3
7.5
6.5
6
1
1
1
1
1
1
18
16
14
19
17
15
VCCB=5V
Typ
5.5
6
1
1
14
15
Unit
ns
μs
ns
5
5
5
5
ns
2.5
1.5
1.2
1
ns
0.5
0.5
0.5
1.5
ns
20
20
20
20
Mbps
Switching Characteristics
Over recommended operating free-air temperature range, VCCA=1.5V±0.1V (unless otherwise
noted)
Parameter
From
(Input)
tpd
A
B
ten
tdis
trA, tfA
trB, tfB
tSK(O)
Max data
rate
To
(Output)
B
A
A
OE
B
A
OE
B
A port rise and
fall time
B port rise and
fall time
VCCB=1.8V
±0.15V
Min Max
2
15
1
15
1
1
6
30
5.5 30
VCCB=2.5V VCCB=3.3V VCCB=5V
±0.2V
±0.3V
±0.5V
Min Max Min Max Min Max
1.2
11 1.1
10
1
10
0.9
12 0.5
12 0.3 13
1
1
1
1
1
1
5.5
28 5.5
25
5.5
23
5
25
5
20
5
20
1.5
5.0
1.5
5.0
1.5
5.0
1.5
5.0
ns
0.9
4.5
0.6
3.5
0.5
3
0.4
2.5
ns
0.5
ns
Channel-to-channel
0.5
40
0.5
0.5
40
40
40
Unit
ns
μs
ns
Mbps
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UM3304/UM3304Q/UM3304QT
Switching Characteristics
Over recommended operating free-air temperature range, VCCA=1.8V±0.15V (unless otherwise
noted)
Parameter
From
(Input)
tpd
A
B
ten
tdis
trA, tfA
trB, tfB
tSK(O)
Max data
rate
To
(Output)
B
A
A
OE
B
A
OE
B
A port rise and
fall time
B port rise and
fall time
Channel-to-channel
VCCB=1.8V
±0.15V
Min Max
1.6
10
1.5
12
1
1
6
34
5.5
33
VCCB=2.5V
±0.2V
Min Max
1.4
9
1.3
8.5
1
1
5.5
23
4.5
22
VCCB=3.3V VCCB=5V
±0.3V
±0.5V
Min Max Min Max
1.3
7
1.2
6.5
1
8
0.9
8
1
1
1
1
5
20 5
17.6
4.2
16.8 4.4
16.3
Unit
ns
μs
ns
1
4.2
1.1
4.0
1.1
4.0
1.1
4.0
ns
0.9
4
0.6
3.2
0.5
2.8
0.4
2.8
ns
0.5
ns
0.5
60
0.5
60
0.5
60
60
Mbps
Switching Characteristics
Over recommended operating free-air temperature range, VCCA=2.5V±0.2V (unless otherwise noted)
Parameter
From
(Input)
tpd
A
B
ten
tdis
trA, tfA
trB, tfB
tSK(O)
Max data
rate
To
(Output)
B
A
A
OE
B
A
OE
B
A port rise and fall time
B port rise and fall time
Channel-to-channel
VCCB=2.5V
±0.2V
Min Max
1.1
6.5
1.2
6.6
1
1
5.0
23
4.4
22
0.8
3
0.7
2.7
0.5
VCCB=3.3V
±0.3V
Min Max
1
5.2
1.1
5.1
1
1
4.6
15.2
3.8
16
0.8
3
0.5
2.8
0.5
VCCB=5V
±0.5V
Min Max
0.9
5
0.9
4.4
1
1
4.6
13
3.9
13.3
0.8
3
0.4
2.7
0.5
100
100
100
Unit
ns
μs
ns
ns
ns
ns
Mbps
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UM3304/UM3304Q/UM3304QT
Switching Characteristics
Over recommended operating free-air temperature range, VCCA=3.3V±0.3V (unless otherwise noted)
Parameter
From
(Input)
tpd
A
B
ten
tdis
trA, tfA
trB, tfB
tSK(O)
Max data
rate
To
(Output)
B
A
A
OE
B
A
OE
B
A port rise and fall time
B port rise and fall time
Channel-to-channel
VCCB=3.3V
±0.3V
Min
Max
0.9
5
1
5.1
1
1
5
15
4
16
0.7
2.5
0.5
2.1
0.5
VCCB=5V
±0.5V
Min
Max
0.8
4
0.9
4
1
1
4
13
3.4
13.8
0.7
2.5
0.4
2.8
0.5
100
100
Unit
ns
μs
ns
ns
ns
ns
Mbps
Operating Characteristics
TA=+25°C
VCCB
Pamameter
CpdA
CpdB
CpdA
CpdB
A-port input
B-port output
B-port input
A-port output
A-port input
B-port output
B-port input
A-port output
A-port input
B-port output
B-port input
A-port output
A-port input
B-port output
B-port input
A-port output
5V
3.3V
to 5V
2.5V
Typ
3.3V
Typ
10
10
10
11
11
11
11
28
29
3.0
30
30
19
19
19
20
21
23
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.03
0.01
0.01
0.01
0.01
0.01
0.01
0.05
5V
1.8V
1.8V
1.8V
1.2V
Typ
1.2V
Typ
1.5V
Typ
VCCA
1.8V
2.5V
Typ
Typ
9
10
10
10
12
11
11
35
28
27
Test Conditions
CL=0, f=10MHz,
tr=tf=1ns,
OE= VCCA
CL=0, f=10MHz,
tr=tf=1ns,
OE= GND
2.5V
Unit
pF
pF
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UM3304/UM3304Q/UM3304QT
Applications Information
UM3304/UM3304Q/UM3304QT ESD protected level translator provides level shifting necessary
to allow data transfer in a multi-voltage system. Externally applied voltages, VCCA and VCCB set
the logic levels on either side of device. A low voltage signal present on V CCA side of the device
appears as a high voltage logic signal on the VCCB side of the device, and vice-versa.
Block Diagram
The UM3304/UM3304Q/UM3304QT (block diagram see Figure 1) does not require a
direction-control signal to control the direction of data flow from A to B or from B to A. In a dc
state, the output drivers of the UM3304/UM3304Q/UM3304QT can maintain a high or low, but
are designed to be weak, so that they can be overdriven by an external driver when data on the bus
starts flowing the opposite direction.
The output one shot detects rising or falling edges on the A or B ports. During a rising edge, the
one shot turns on the PMOS transistors (T1, T3) for a short duration, which speeds up the
low-to-high transition. Similarly, during a falling edge, the one shot turns on the NMOS
transistors (T2, T4) for a short duration, which speeds up the high-to-low transition.
VCCB
VCCA
P
One Shot
T1
4K
I/O A
P
One Shot
N
One Shot
I/O B
T2
T3
4K
T4
N
One Shot
Figure 1 Block Diagram of UM3304/UM3304Q/UM3304QT I/O Cell
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UM3304/UM3304Q/UM3304QT
Input Driver Requirements
Typical IIN vs VIN characteristics of the UM3304/UM3304Q/UM3304QT are shown in Figure 2.
For proper operation, the device driving the data I/Os of the UM3304/UM3304Q/UM3304QT
must have drive strength of at least ±2 mA.
IIN
VT/4kΩ
VIN
-(VD-VT)/4kΩ
A: VT is the input threshold voltage of the UM3304/UM3304Q/UM3304QT (typical VCCI/2)
B: VD is the supply voltage of the external driver.
Figure 2 Typical IIN vs VIN Curve
Power Up
During operation, ensure that VCCA≤VCCB at all times. During power-up sequencing, VCCA≥ VCCB
does not damage the device, so any power supply can be ramped up first. The
UM3304/UM3304Q/UM3304QT has circuitry that disables all output ports when either VCC is
switched off (VCCA/B = 0 V).
Enable and Disable
The UM3304/UM3304Q/UM3304QT has an OE input that is used to disable the device by setting
OE = low, which places all I/Os in the high-impedance (Hi-Z) state. The disable time (tdis)
indicates the delay between when OE goes low and when the outputs acutally get disabled (Hi-Z).
The enable time (ten) indicates the amount of time the user must allow for the one-shot circuitry
to become operational after OE is taken high.
Pullup or Pulldown Resistors on I/O Lines
The UM3304/UM3304Q/UM3304QT is designed to drive capacitive loads of up to 50pF. The
output drivers of the UM3304/UM3304Q/UM3304QT have low dc drive strength. External pullup
or pulldown resistors need higher than 50 kΩ.
For the same reason, the UM3304/UM3304Q/UM3304QT should not be used in open-drain
system, such as I2C or 1-wire system.
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UM3304/UM3304Q/UM3304QT
Typical Operating Circuit
+1.8V
+3.3V
0.1μF
0.1μF
1μF
VCCA VCCB
OE
+1.8V
SYSTEM
CONTROLLER
+3.3V
SYSTEM
UM3304
UM3304Q
UM3304QT
DATA
A1
B1
A2
B2
A3
A4
B3
B4
DATA
Figure 3 Typical operating circuit
Test Circuits
2×VCCO
From Output
Under Test
15pF
50kΩ
From Output
Under Test
1MΩ
15pF
LOAD CIRCUIT FOR MAX DATA RATE,
PULSE DURATION PROPAGATION
DELAY OUTPUT RISE AND FALL TIME
MEASUREMENT
S1
Open
50kΩ
LOAD CIRCUIT FOR
ENABLE/DISABLE
TIME MEASUREMENT
TEST
S1
tPZL/tPLZ
tPHZ/tPZH
2×VCCO
Open
VCCI
Input
VCCI/2
VCCI/2
0V
tPLH
Output
tPHL
VCCO/2
0.9×VCCO
VOH
0.1×VCCO
tr
tw
VCCO/2
VCCI
VOL
tf
Input
VCCI/2
VCCI/2
0V
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
VOLTAGE WAVEFORMS
PULSE DURATION
A. CL includes probe and jig capacitance.
B. All input pulses are supplied by generators having the following characteristics: PRR≤10MHz, ZO=50Ω,dv/dt≥1V/ns.
C. The outputs are measured one at a time, with one transition per measurement.
D. tPLH and tPHL are the same as tpd.
E. VCCI is the VCC associated with the input port.
F. VCCO is the VCC associated with the output port.
G. All parameters and waveforms are not applicable to all devices.
Figure 4 Load Circuits and Voltage Waveforms
________________________________________________________________________
http://www.union-ic.com Rev.12 Apr.2014
11/15
UM3304/UM3304Q/UM3304QT
Package Information
UM3304 CSP12 1.9×1.4
Outline Drawing
E1
E
C
Symbol
e
D
D1
b
L
Ball A3 Index Aera
Bottom View
A2
A1
A
Top View
Side View
A
A1
A2
D
E
D1
E1
e
b
C
L
DIMENSIONS
MILLIMETERS
Min
Max
0.65
0.21
0.24
0.40
0.42
1.82
1.90
1.32
1.40
1.50TYP
1.00 TYP
0.50 TYP
0.27
0.32
0.50 TYP
0.15
0.17
INCHES
Min
Max
0.026
0.008 0.010
0.016 0.017
0.073 0.076
0.053 0.056
0.060TYP
0.040 TYP
0.020 TYP
0.011 0.013
0.020 TYP
0.006 0.007
Land Pattern
0.5
12×Φ0.24
NOTES:
1. Bump is Lead Free Sn/Ag/Cu.
2. Unit: mm.
3. Non-solder mask defined copper landing pad.
4. Laser Mark on silicon die back; back-lapped.
0.5
Tape and Reel Orientation
YAAB
M
________________________________________________________________________
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12/15
UM3304/UM3304Q/UM3304QT
UM3304Q QFN14 3.5×3.5
A
A1
A3
Outline Drawing
Symbol
Side View
D
e
(Pin #1 ID)
Z(4×)
k
L(14×)
E2
E
D2
b(14×)
Bottom View
D
E
D2
E2
A
A1
A3
b
L
e
k
Z
DIMENSIONS
MILLIMETERS
INCHES
Min
Typ
Max
Min
Typ
Max
3.45
3.50
3.55
0.138 0.140 0.142
3.45
3.50
3.55
0.138 0.140 0.142
1.90
2.00
2.10
0.076 0.080 0.084
1.90
2.00
2.10
0.076 0.080 0.084
0.75
0.80
0.85
0.030 0.032 0.034
0
0.02
0.05
0
0.001 0.002
0.15REF
0.006REF
0.20
0.25
0.30
0.008 0.010 0.012
0.35
0.40
0.45
0.014 0.016 0.018
0.50BSC
0.020BSC
1.50
0.060
0.625
0.025
-
Land Pattern
4.30
2.05
2.60
1.50
4.30
2.05
0.50
0.28
NOTES:
1. Compound dimension: 3.50×3.50;
2. Unit: mm;
3.General tolerance ±0.05mm unless otherwise
specified;
4. The layout is just for reference.
Tape and Reel Orientation
UM
3304Q
XX
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UM3304/UM3304Q/UM3304QT
UM3304QT QFN16 2.6×1.8
Outline Drawing
DIMENSIONS
D
0.3
N13
N13
N16
Symbol
INCHES
Min
Max
Min
Max
b
N1
MILLIMETERS
A
0.5
0.6
0.02
0.024
e
L
N16
A1
0
0.05
0
0.002
E
N1
N9
0.7
N9
0.5
N5
N5
Bottom View
Side View
A3
A1
A
Top View
A3
0.15REF
0.006REF
D
1.75
1.85
0.069
0.073
E
2.55
2.65
0.1
0.104
L
0.3
0.5
0.012
0.02
b
0.15
0.25
0.006
0.01
e
0.400TYP
0.016REF
Land Pattern
NOTES:
1. Compound dimension: 2.60×1.80 ;
2. Unit: mm;
3.General tolerance ±0.05mm unless otherwise
specified;
4. The layout is just for reference.
Tape and Reel Orientation
3304
XX
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UM3304/UM3304Q/UM3304QT
IMPORTANT NOTICE
The information in this document has been carefully reviewed and is believed to be
accurate. Nonetheless, this document is subject to change without notice. Union assumes
no responsibility for any inaccuracies that may be contained in this document, and makes
no commitment to update or to keep current the contained information, or to notify a
person or organization of any update. Union reserves the right to make changes, at any
time, in order to improve reliability, function or design and to attempt to supply the best
product possible.
Union Semiconductor, Inc
Add: 2F, No. 3, Lane647 Songtao Road, Shanghai 201203
Tel: 021-51093966
Fax: 021-51026018
Website: www.union-ic.com
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