UM3221EEAE

UM3221E/UM3222E/UM3232E Fail-Safe, Single Supply RS-232 Transceivers UM3221E/UM3222E/UM3232E General Description The UM3221E/UM3222E/UM3232E series are 3.3V powered RS-232 transceivers intended for portable or hand-held applications. The UM3221E has one driver/one receiver while the UM3222E/UM3232E has two drivers/two receivers. The device features low power consumption, high data-rate capability and enhanced ESD protection. The ESD rating of all transmitter outputs and receiver inputs is ±15kV for both human body mode and IEC61000-4-2 air discharge methods, and over ±8kV for IEC61000-4-2 contact discharge methods. The logic I/O pins are protected to ±2kV for human body mode. Small footprint, low profile package and the use of small 0.1μF capacitors ensure board space savings as well. Data rates greater than 250kbps are guaranteed at worst case load conditions. This family is fully compatible with 3.3V-only systems, mixed 1.8V and 3.3V systems, mixed 3.3V and 5.0V systems and 5.0V-only systems. The UM3221E/UM3222E has a low-power shutdown mode where the devices’ driver outputs and charge pumps are disabled. During shutdown, the supply current falls to less than 1μA that reduces power consumption in battery-powered portable systems or other low power consumption systems. The UM3221E/UM3222E receivers remain active in shutdown mode, allowing monitoring of external signals. The UM3221E/UM3222E and UM3232E are pin, package, and functionally compatible with the industry standard MAX242 and MAX 232, respectively. Applications Features z z z z z Industrial Automation Equipments Battery-Powered Equipments Hand-Held Equipments POS Terminals z z z z z z z z Meets True EIA/TIA-232-F Standards from a +3.0V to +5.5V Power Supply Meets EIA/TIA-562 Levels of ±3.7V with Supply Voltages as Low as 2.7V Enhanced ESD Specifications: ±15kV Human Body Mode ±15kV IEC61000-4-2 Air Discharge Mode ±8kV IEC61000-4-2 Contact Discharge Mode 1μA Low Power Shutdown (UM3221E/UM3222E) 250kbps Minimum Transmission Rate Guaranteed 30V/μs Max Slew Rate Latch-Up Performance Exceeds 200mA Hot Swap and Fail-Safe I/O Logic Compatible with 1.8V Logic @ VCC=3.3V ________________________________________________________________________ http://www.union-ic.com Rev.12 Nov.2018 1/20 UM3221E/UM3222E/UM3232E Ordering Information Part Number Temp. Range Package Type UM3221EEAE -40°C to +85°C SSOP16 UM3221EEUE -40°C to +85°C TSSOP16 UM3222EEUE -40°C to +85°C TSSOP20 UM3232EESE -40°C to +85°C SOP16 UM3232EEPE -40°C to +85°C DIP16 UM3232EEUE -40°C to +85°C TSSOP16 UM3232EEAE -40°C to +85°C SSOP16 Shipping Qty 2000pcs/13 Inch Tape & Reel 3000pcs/13 Inch Tape & Reel 3000pcs/13 Inch Tape & Reel 2500pcs/13 Inch Tape & Reel 25pcs/Tube 3000pcs/13 Inch Tape & Reel 2000pcs/13 Inch Tape & Reel ________________________________________________________________________ http://www.union-ic.com Rev.12 Nov.2018 2/20 UM3221E/UM3222E/UM3232E Pin Configurations Top View XX: Week Code UM3221EEAE SSOP16 SSOP16/TSSOP16 XX: Week Code UM3221EEUE TSSOP16 TSSOP20 XX: Week Code UM3222EEUE TSSOP20 ________________________________________________________________________ http://www.union-ic.com Rev.12 Nov.2018 3/20 UM3221E/UM3222E/UM3232E Pin Configurations Top View XX: Week Code UM3232EESE SOP16 XX: Week Code UM3232EEPE DIP16 SOP16/DIP16/TSSOP16/SSOP16 XX: Week Code UM3232EEUE TSSOP16 XX: Week Code UM3232EEAE SSOP16 ________________________________________________________________________ http://www.union-ic.com Rev.12 Nov.2018 4/20 UM3221E/UM3222E/UM3232E Pin Description UM3221E 1 Pin No. UM3222E 1 UM3232E - 2 2 1 C1+ 3 3 2 V+ 4 4 3 C1- 5 5 4 C2+ 6 6 5 C2- 7 7 6 V- 13 8 9 11 14 15 8, 17 9, 16 10, 15 12, 13 18 19 7, 14 8, 13 9, 12 10, 11 15 16 T_OUT R_IN R_OUT T_IN GND VCC 16 20 - Pin Name Function ______ Receiver Enable. Active low. Positive Terminals of Voltage-Doubler Charge Pump Capacitor Positive Voltage Generated by the Charge Pump Negative Terminals of Voltage-Doubler Charge Pump Capacitor Positive Terminals of Inverting Charge Pump Capacitor Negative Terminals of Inverting Charge Pump Capacitor Negative Voltage Generated by the Charge Pump RS-232 Driver Outputs RS-232 Receiver Inputs RS-232 Receiver Outputs RS-232 Driver Inputs Ground +3.0V to +5.5V Supply Voltage Input Shut off Pump Power and Transmitters. Active low. EN ____________ SHDN ________________________________________________________________________ http://www.union-ic.com Rev.12 Nov.2018 5/20 UM3221E/UM3222E/UM3232E Absolute Maximum Ratings (Note 1) Symbol Parameter Value Unit VCC Supply Voltage on VCC -0.3 to +6 V V+ Voltage on V+ (VCC-0.3) to +7.5 V V- Voltage on V- -7.5 to +0.3 V T_IN Voltage on T_IN -0.3 to (VCC+0.3) V R_IN Voltage on R_IN ±30 V T_OUT Voltage on T_OUT (V--0.3) to (V++0.3) V R_OUT Voltage on R_OUT -0.3 to (VCC+0.3) V Short-Circuit Duration, T_OUT Continuous PD Continuous Power Dissipation at TA=70°C SSOP16 775 TSSOP20 879 SOP16 696 DIP16 842 TSSOP16 754 mW TA Operating Temperature Range -40 to +85 °C TSTG Storage Temperature Range Maximum Lead Temperature for Soldering 10 Seconds -65 to +165 °C +300 °C TL Note 1: 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 in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ________________________________________________________________________ http://www.union-ic.com Rev.12 Nov.2018 6/20 UM3221E/UM3222E/UM3232E Electrical Characteristics (VCC=+3.0V to +5.5V, C1- C4=0.1μF, TA=TMIN to TMAX, unless otherwise noted. Typical values are at TA=25°C) Parameter Symbol Conditions DC CHARACTERISTICS ( VCC=+3.3V or +5V, TA=25°C) ____________ VCC Supply Current ICC SHDN =VCC, No Load ____________ Shutdown Supply ISHDN SHDN =GND Current LOGIC INPUTS ____________ ______ Input Leakage T_IN, SHDN , EN Current VCC=3.3V T_IN, ____________ ______ Input Threshold Low VIL SHDN , EN VCC=5.0V Min VCC=3.3V 1.6 VCC=5.0V 2.2 Input Threshold High VIH T_IN,______ SHDN , EN ____________ Max Unit 1.5 mA 1 μA ±1 μA 0.8 0.8 VCC=3.3V VCC=5.0V Transmitter Input Hysteresis Typ V V 0.2 0.15 V RECEIVER OUTPUTS Output Voltage Low VOL Output Voltage High VOH VCC=3.3V, IOUT=10mA VCC=5.0V, IOUT=10mA VCC=3.3V, IOUT=-3.0mA VCC=5.0V, IOUT=-3.0mA RECEIVER INPUTS Input Voltage Range -30 0.8 0.8 30 3 All Drivers Loaded with 3kΩ to Ground ±5.0 ±6.0 Input Threshold High TA=+25°C Short to VCC , GND or Other TXD Pin V V TA=+25°C TA=+25°C Output Short-Circuit Current 2.8 4.4 1.15 1.55 1.35 1.75 0.2 5 Input Threshold Low Input Hysteresis Input Resistance TRANSMITTER OUTPUTS Output Voltage Swing VCC=3.3V VCC=5.0V VCC=3.3V VCC=5.0V 0.8 0.8 V V 2 2 7 V V kΩ V VCC=3.3V ±30 ±60 mA VCC=5.0V ±40 ±60 mA ________________________________________________________________________ http://www.union-ic.com Rev.12 Nov.2018 7/20 UM3221E/UM3222E/UM3232E Electrical Characteristics (Continued) (VCC=+3.0V to +5.5V, C1- C4=0.1μF, TA=TMIN to TMAX, unless otherwise noted. Typical values are at TA=25°C) Parameter Symbol TIMING CHARACTERISTICS Maximum Data Rate Receiver Propagation Delay tPLH, tPHL Receiver Skew |tPHL-tPLH| Transmitter Propagation Delay tPLH, tPHL Transmitter Skew |tPHL-tPLH| Conditions Min RL=3kΩ to 7kΩ, CL=50pF to 1000pF, One Transmitter Switching All Parts, CL=150pF Normal Figure 1 Operation Typ Max 250 kbps 0.15 μs 0.1 RL=3kΩ, CL=2500pF, All Transmitters Loaded Figure 1 TA=+25°C, VCC=3.3V, RL=3kΩ to 7kΩ, Transition-Region CL=50pF to 1000pF, Slew Rate Measured from -3V to +3V or +3V to -3V, Figure 1 ESD AND LATCH UP PERFORMANCE Human Body Model R_IN, T_OUT IEC61000-4-2, ESD-Protection Contact Discharge Voltage IEC61000-4-2, Air-Gap Discharge Logic Pin Human Body Model ESD-Protection Voltage Latch Up JEDEC Standard No.78D Performance 0.9 3 Unit 15 μs μs 0.1 μs 30 V/μs ±15 ±8 kV ±15 ±2 kV ±200 mA ________________________________________________________________________ http://www.union-ic.com Rev.12 Nov.2018 8/20 UM3221E/UM3222E/UM3232E Detailed Description Dual Charge-Pump Voltage Converter The UM3221E/UM3222E/UM3232Es’ internal power supply consists of a regulated dual charge pump and provides output the maxim voltages of +7V (doubling charge pump) and -7V (inverting charge pump) over the +3.0V to +5.5V VCC range. The charge pump operates in discontinuous mode; if the output voltages are less than 7V, the charge pump is enabled, and if the output voltages exceed 7V, the charge pump is disabled. The charge pumps require only four small, external 0.1μF capacitors for the voltage doubler and inverter functions (see Figure 2). RS-232 Transmitters The transmitters are inverting level translators that translate TTL/CMOS inputs to EIA/TIA-232 output levels. All UM3221E/UM3222E/UM3232E transmitters guarantee a 250kbps data rate for full load conditions (3kΩ and 1000pF). Transmitters can be paralleled to drive multiple receivers. When T_IN is not driven, UM3221/UM3222 will keep logic high, while UM3232’s T_IN logic level is on hold. RS-232 Receivers The receivers convert RS-232 signals to CMOS output levels and accept inputs up to ±30V while presenting the required 3kΩ to 7kΩ______ input impedance. The UM3221E/UM3222E receivers have high impedance state. inverting three-state outputs. Drive EN high to place the receivers into a______ Receivers can be either active or inactive in shutdown state depending on EN status. UM3221E/UM3222E ____________ Supply current falls to less than 1μA in shutdown mode (SHDN = GND). When shutdown, the device’s charge pumps are shut off, V+ is pulled down to VCC, V- is pulled to ground, and the transmitter outputs are disabled (high impedance). The time required to recover ____________ ____________from shutdown is typically 100μs. Connect SHDN to VCC if shutdown mode is not used. SHDN has no effect on R_OUT. ±15kV ESD Protection All pins on UM3221E/UM3222E/UM3232E devices include ESD protection structures, but the family incorporates advanced structures which allow the RS-232 pins (transmitter outputs and receiver inputs) to survive ESD events up to ±15kV. The RS-232 pins are particularly vulnerable to ESD damage because they are typically connected to an exposed port on the exterior of the finished product. The ESD structures withstand high ESD in all states: normal operation, shutdown and powered down. After an ESD event, circuits keep working without latch up. ESD protection can be tested in various ways; the transmitter outputs and receiver inputs are characterized for protection to the following limits: ±15kV using the Human Body Model, ±8kV using the Contact Discharge method specified in IEC61000-4-2, ±15kV using the Air-Gap Discharge method specified in IEC61000-4-2. The logic pins are characterized for protection to the following limit: ±2kV using the Human Body Model. Hot Swap and Fail-Safe The UM3221E/UM3222E/UM3232E guarantees a logic-high receiver output when the receiver inputs are shorted to GND or open, or when they are connected to a line with no driver enabled. ________________________________________________________________________ http://www.union-ic.com Rev.12 Nov.2018 9/20 UM3221E/UM3222E/UM3232E Because of the latch-up characteristics and all sort protection, UM3221E/UM3222E/UM3232E support hot swap. ________________________________________________________________________ http://www.union-ic.com Rev.12 Nov.2018 10/20 UM3221E/UM3222E/UM3232E Test Circuits Figure 1 ________________________________________________________________________ http://www.union-ic.com Rev.12 Nov.2018 11/20 UM3221E/UM3222E/UM3232E Typical Operating Circuits +3.3V +3.3V C5 + + C5 19 15 2 C1 + 4 5 C2 + 6 VCC C1+ V+ 2 3 C3 C1C2+ UM3221E V- + + C1 4 C4 7 + 5 + C2 6 C2- VCC C1+ C1C2+ UM3222E C4 7 + C2- 400k T1OUT 13 11 T1IN 9 V- + +3.3V 400k TTL/CMOS OUTPUT 3 C3 +3.3V TTL/CMOS INPUT V+ R1IN R1OUT 8 5k T1OUT 17 13 T1IN RS-232 OUTPUT +3.3V TTL/CMOS INPUTS RS-232 OUTPUTS 400k RS-232 INPUT T2OUT 12 T2IN R1IN 16 15 R1OUT 1 EN SHDN 5k TTL/CMOS OUTPUTS 16 8 R2IN 10 R2OUT GND 14 5k 1 EN SHDN 9 20 GND 18 +3.3V C5 + 16 1 C1 C2 + C1+ C14 C2+ 5 V+ 2 C3 3 + VCC UM3232E V- + C4 6 + C2- T1OUT 14 11 T1IN RS-232 OUTPUTS TTL/CMOS INPUTS T2OUT 10 T2IN 7 R1IN 13 12 R1OUT 5k TTL/CMOS OUTPUTS 9 R2IN R2OUT 8 RS-232 INPUTS 5k GND 15 Figure 2 ________________________________________________________________________ http://www.union-ic.com Rev.12 Nov.2018 12/20 RS-232 INPUTS UM3221E/UM3222E/UM3232E Typical Operating Characteristics (VCC=+3.3V, 250kbps data rate, 0.1μF capacitors, all transmitters loaded with 3kΩ and CL, TA=25°C, unless otherwise noted.) V+,V- vs. Supply Voltage 8 6 6 4 4 2 2 VOUT+ Transmitting at 250kbps CL=1000pF 0 V+,V-(V) Transmitter Output Voltage(V) Transmitter Output Voltage vs. Supply Voltage 8 VOUT- -2 -2 -4 -4 -6 -6 -8 V- -8 2 2.5 3 3.5 4 4.5 2.4 5 2.8 3.2 3.6 4 4.4 4.8 5.2 5.6 6 Supply Voltage (V) Supply Voltage(V) Transmitter Output Voltage vs. Load Capacitance Supply Current vs.Supply Voltage 8 Transmitter Output Voltage(V) 35 30 Supply Current(mA) V+ Transmitting at 250kbps CL=1000pF 0 25 Transmitting at 250kbps CL=1000pF 20 6 4 2 VOUT+ 0 VOUT- Transmitting at 20kbps -2 -4 -6 -8 15 2 2.5 3 3.5 4 4.5 Supply Voltage(V) 5 5.5 6 0 500 1500 2000 2500 3000 Load Capacitance (pF) Supply Current vs. Load Capacitance Slew Rate vs. Load Capacitance 25 30 +Slew 25 23 Supply Current (mA) -Slew Slew Rate (V/us) 1000 20 15 10 19 17 Transmitting at 20kbps 5 21 Transmitting at 20kbps 15 0 0 500 1000 1500 2000 Load Capacitance (pF) 2500 3000 0 500 1000 1500 2000 2500 Load Capacitance (pF) ________________________________________________________________________ http://www.union-ic.com Rev.12 Nov.2018 13/20 3000 UM3221E/UM3222E/UM3232E Applications Information Capacitor Selection The capacitor type used for C1–C4 is not critical for proper operation; polarized or non-polarized capacitors can be used. The charge pump requires 0.1μF capacitors for 3.3V operation. Increasing the capacitor values (e.g. by a factor of 2) reduces ripples on the transmitter outputs and slightly reduces power consumption. C2, C3 and C4 can be increased without changing C1’s value. When using the minimum required capacitor values, make sure the capacitor value does not degrade excessively with temperature. If in doubt, use capacitors with a larger nominal value. The capacitor’s equivalent series resistance (ESR), which usually rises at low temperatures, influences the amount of ripples on V+ and V- output voltages. The following table shows some recommended minimum required pump capacitor values for different input voltage ranges. Minimum Required Pump Capacitor Value Input Voltage VCC Charge Pump Capacitor Value for UM32XX 2.7V to 3.6V C1–C4=0.1μF 3.6V to 5.5V C1–C4=0.47μF 2.7V to 5.5V C1–C4=0.47μF Power Supply Decoupling In most circumstances, a 0.1μF VCC bypass capacitor is adequate. In applications sensitive to power-supply noise, use a capacitor of the same value as charge pump capacitor C1. Connect bypass capacitors to the IC as close as possible. Operation down to 2.7V Transmitter outputs meet EIA/TIA-562 levels of ±3.7V with supply voltages as low as 2.7V. Interconnection with 3V and 5V Logic The UM3221E/UM3222E/UM3232E can directly interface with various 3V and 5V logic families, including ACT and HCT CMOS. ________________________________________________________________________ http://www.union-ic.com Rev.12 Nov.2018 14/20 UM3221E/UM3222E/UM3232E Package Information UM3232EESE SOP16 Outline Drawing Symbol A A1 A2 b c D E E1 e L θ DIMENSIONS MILLIMETERS INCHES Min Typ Max Min Typ Max 1.35 1.60 1.75 0.053 0.063 0.069 0.10 0.25 0.004 0.010 1.25 1.45 1.65 0.049 0.057 0.065 0.33 0.51 0.013 0.020 0.17 0.25 0.007 0.010 9.80 10.00 10.20 0.386 0.394 0.402 3.80 3.90 4.00 0.150 0.154 0.157 5.80 6.00 6.20 0.228 0.236 0.244 1.27BSC 0.050BSC 0.40 1.27 0.016 0.050 0° 8° 0° 8° 6.80 1.87 Land Pattern NOTES: 1. Compound dimension: 10.00×3.90. 2. Unit: mm. 3. General tolerance ±0.05mm unless otherwise specified. 4. The layout is just for reference. Tape and Reel Orientation ________________________________________________________________________ http://www.union-ic.com Rev.12 Nov.2018 15/20 UM3221E/UM3222E/UM3232E UM3232EEPE DIP16 Outline Drawing Symbol A A1 A2 b b1 c D E E1 E2 e L DIMENSIONS MILLIMETERS INCHES Min Typ Max Min Typ Max 3.71 4.01 4.31 0.146 0.158 0.170 0.51 0.020 3.20 3.40 3.60 0.126 0.134 0.142 0.38 0.48 0.57 0.015 0.019 0.022 1.52BSC 0.060BSC 0.20 0.28 0.36 0.008 0.011 0.014 18.80 19.00 19.20 0.740 0.748 0.756 6.20 6.40 6.60 0.244 0.252 0.260 7.32 7.62 7.92 0.288 0.300 0.312 8.40 8.70 9.00 0.331 0.343 0.354 2.54BSC 0.100BSC 3.00 3.30 3.60 0.118 0.130 0.142 ________________________________________________________________________ http://www.union-ic.com Rev.12 Nov.2018 16/20 UM3221E/UM3222E/UM3232E UM3221EEUE/UM3232EEUE TSSOP16 Outline Drawing Symbol D Pin #1 ID e b Top View c End View θ2 θ1 L Side View L1 θ3 A A1 A2 A3 b c D E E1 e L L1 L2 θ1 θ2 θ3 DIMENSIONS MILLIMETERS INCHES Min Typ Max Min Typ Max 1.20 0.047 0.05 0.15 0.002 0.006 0.80 1.05 0.031 0.041 0.34 0.44 0.54 0.013 0.017 0.021 0.19 0.30 0.007 0.012 0.09 0.20 0.004 0.008 4.86 4.96 5.10 0.191 0.195 0.201 4.30 4.40 4.50 0.169 0.173 0.177 6.20 6.40 6.60 0.244 0.252 0.260 0.65BSC 0.026BSC 0.45 0.60 0.75 0.018 0.024 0.030 1.00REF 0.039REF 0.25BSC 0.010BSC 0° 8° 0° 8° 10° 12° 14° 10° 12° 14° 10° 12° 14° 10° 12° 14° Land Pattern NOTES: 1. Compound dimension: 4.96×4.40. 2. Unit: mm. 3. General tolerance ±0.05mm unless otherwise specified. 4. The layout is just for reference. Tape and Reel Orientation ________________________________________________________________________ http://www.union-ic.com Rev.12 Nov.2018 17/20 UM3221E/UM3222E/UM3232E UM3222EEUE TSSOP20 Outline Drawing Symbol A A1 A2 A3 b c D E E1 e L L1 L2 θ1 θ2 θ3 DIMENSIONS MILLIMETERS INCHES Min Typ Max Min Typ Max 1.20 0.047 0.05 0.15 0.002 0.006 0.80 1.05 0.031 0.041 0.34 0.44 0.54 0.013 0.017 0.021 0.19 0.30 0.007 0.012 0.09 0.20 0.004 0.008 6.40 6.50 6.60 0.252 0.256 0.260 4.30 4.40 4.50 0.169 0.173 0.177 6.20 6.40 6.60 0.244 0.252 0.260 0.65BSC 0.026BSC 0.45 0.60 0.75 0.018 0.024 0.030 1.00REF 0.039REF 0.25BSC 0.010BSC 0° 8° 0° 8° 10° 12° 14° 10° 12° 14° 10° 12° 14° 10° 12° 14° Land Pattern NOTES: 1. Compound dimension: 6.50×4.40. 2. Unit: mm. 3. General tolerance ±0.05mm unless otherwise specified. 4. The layout is just for reference. Tape and Reel Orientation ________________________________________________________________________ http://www.union-ic.com Rev.12 Nov.2018 18/20 UM3221E/UM3222E/UM3232E UM3221EEAE/UM3232EEAE SSOP16 Outline Drawing DIMENSIONS Symbol MILLIMETERS INCHES A Min - Typ - Max 2.00 Min - Typ - Max 0.079 A1 0.05 - - 0.002 - - A2 1.65 1.75 1.85 0.065 0.069 0.073 b 0.22 0.30 0.38 0.009 0.012 0.015 c 0.09 0.17 0.25 0.004 0.007 0.010 D 5.90 6.20 6.50 0.232 0.244 0.256 E 5.00 5.30 5.60 0.197 0.209 0.220 E1 7.40 7.80 8.20 0.291 0.307 0.323 e 0.65BSC 0.026BSC L 0.55 0.75 0.95 0.022 0.030 0.037 θ 0° - 8° 0° - 8° Land Pattern NOTES: 1. Compound dimension: 6.20×5.30. 2. Unit: mm. 3. General tolerance ±0.05mm unless otherwise specified. 4. The layout is just for reference. Tape and Reel Orientation ________________________________________________________________________ http://www.union-ic.com Rev.12 Nov.2018 19/20 UM3221E/UM3222E/UM3232E GREEN COMPLIANCE Union Semiconductor is committed to environmental excellence in all aspects of its operations including meeting or exceeding regulatory requirements with respect to the use of hazardous substances. Numerous successful programs have been implemented to reduce the use of hazardous substances and/or emissions. All Union components are compliant with the RoHS directive, which helps to support customers in their compliance with environmental directives. For more green compliance information, please visit: http://www.union-ic.com/index.aspx?cat_code=RoHSDeclaration 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: Unit 606, No.570 Shengxia Road, Shanghai 201210 Tel: 021-51093966 Fax: 021-51026018 Website: www.union-ic.com ________________________________________________________________________ http://www.union-ic.com Rev.12 Nov.2018 20/20