UNISONIC TECHNOLOGIES CO., LTD UT3222 Preliminary CMOS IC 3.0V TO 5.5V LOW POWER MULTICHANNEL RS-232 LINE TRANSCEIVERS USING FOR 0.1μF EXTERNAL CAPACITORS DESCRIPTION The UTC UT3222 have two receivers and two drivers, and a dual charge-pump circuit. The device meets the requirements of TIA/EIA-232-F and provides the electrical interface between an asynchronous communication controller and the serial-port connector. The charge pump and four small external capacitors allow operation from a single 3.0V to 5.5V supply. The device operates at data signaling rates up to 250kbit/s and a maximum of 35V/μs driver output slew rate. The UTC UT3222 can be placed in the power-down mode by TSSOP-20 setting PWRDOWN low, which draws only 1μA from the power supply. When the device is powered down, the receivers remain active while the drivers are placed in the high-impedance state. Also, during power down, the onboard charge pump is disabled; V+ is lowered to VCC and V− is raised toward GND. Receiver outputs also can be placed in the high-impedance state by setting EN high. FEATURES * Exceeds ±8KV ESD Protection(HBM) for RS-232 I/O Pins * Meets the Requirements of TIA/EIA-232-F and ITU V.28 Standards * Operates With 3.0V to 5.5V VCC Supply * Operates Up To 250kbit/s Data Rate * Two Drivers and Two Receivers * Low Standby Current 1μA Typical * External Capacitors 4×0.1μF * Accepts 5.0V Logic Input With 3.3V Supply ORDERING INFORMATION Ordering Number Lead Free UT3222L-P20-R Halogen Free UT3222G-P20-R www.unisonic.com.tw Copyright © 2014 Unisonic Technologies Co., Ltd Package Packing TSSOP-20 Tape Reel 1 of 7 QW-R502-986.b UT3222 ■ Preliminary CMOS IC MARKING INFORMATION PACKAGE MARKING TSSOP-20 PIN CONFIGURATION EN C1+ 1 20 2 19 PWRDOWN VCC V+ 3 18 GND C1- 4 17 DOUT1 C2+ 5 16 RIN1 C2- 6 15 ROUT1 V- 7 14 NC DOUT2 8 13 DIN1 RIN2 9 12 DIN2 ROUT2 10 11 NC UTC UT3222 PIN DESCRIPTION PIN NO. 1 PIN NAME DESCRIPTION Receiver Enable. Active low. 2 3 4 5 6 7 8 9 10 11, 14 12 13 15 16 17 18 19 EN C1+ V+ C1C2+ C2VDOUT2 RIN2 ROUT2 NC DIN2 DIN1 ROUT1 RIN1 DOUT1 GND VCC TTL/CMOS Driver Inputs TTL/CMOS Driver Inputs TTL/CMOS Receiver Outputs RS-232 Receiver Inputs RS-232 Driver Outputs Ground +3.0V to +5.5V Supply Voltage 20 PWRDOWN Shutdown Control. Active low. Positive Terminal of Voltage-Doubler Charge-Pump Capacitor +5.5V Generated by the Charge Pump Negative Terminal of Voltage-Doubler Charge-Pump Capacitor Positive Terminal of Inverting Charge-Pump Capacitor Negative Terminal of Inverting Charge-Pump Capacitor -5.5V Generated by the Charge Pump RS-232 Driver Outputs RS-232 Receiver Inputs TTL/CMOS Receiver Outputs UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 7 QW-R502-986.b UT3222 Preliminary FUNCTION TABLE For EACH DRIVER INPUTS (DIN) X L H INPUTS( PWRDOWN ) L H H For EACH RECEIVER INPUTS(RIN) INPUTS ( EN ) L L H L X H OPEN L H=High Level, L=Low Level, X=Irrelevant, Z=High Impedance (off). OPEN=Input disconnected or connected driver off. CMOS IC OUTPUT DOUT Z H L OUTPUT ROUT H L Z H BLOCK DIAGRAM UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 of 7 QW-R502-986.b UT3222 Preliminary CMOS IC ABSOLUTE MAXIMUM RATING [Over operating free-air temperature range (unless otherwise noted)] PARAMETER Supply Voltage Range Positive Output Supply Voltage Range (Note 2) Negative Output Supply Voltage Range (Note 2) Supply Voltage Difference (Note 2) SYMBOL VCC V+ VV+ - V- RATINGS -0.3 ~ +6.0 -0.3 ~ +7.0 +0.3 ~ -7.0 +13 UNIT V V V V -0.3 ~ +6.0 V VIN Receivers -25 ~ +25 V Drivers -13.2 ~ +13.2 V Output Voltage VOUT Receivers -0.3 ~ VCC+0.3 V Operating Virtual Junction Temperature TJ +150 °C Storage Temperature TSTG -65 ~ + 150 °C Notes: 1. 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. 2. All voltages are with respect to network GND. Input Voltage Drivers, EN , PWRDOWN THERMAL DATA PARAMETER Junction to Ambient SYMBOL θJA RATING 83 UNIT °C/W RECOMMENDED OPERATING CONDITIONS (See Note & Table 1) PARAMETER Supply Voltage Driver and Control High-level Input Voltage Driver and Control Low-level Input Voltage Driver and Control Input Voltage SYMBOL VCC VIH TEST CONDITIONS VCC=3.3V VCC=5.0V VCC=3.3V DIN, EN , PWRDOWN VCC=5.5V MIN 3.0 4.5 2.0 2.4 TYP 3.3 5.0 MAX 3.6 5.5 V VIL DIN, EN , PWRDOWN 0.8 V VIN DIN, EN , PWRDOWN 5.5 V Receiver Input Voltage VRIN -25 25 Operating Free-Air Temperature TA 0 70 Notes: Test conditions are C1~C4=0.1μF at VCC=3.3V±0.3V; C1=0.047μF, C2~C4=0.33μF at VCC=5.0V±0.5V. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw UNIT V V V °C 4 of 7 QW-R502-986.b UT3222 Preliminary CMOS IC ELECTRICAL CHARACTERISTICS [(over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted) (see Note 3 & Table 1)] PARAMETER Input Leakage Current Supply Current Supply Current (Powered Off) DRIVER SECTION High-Level Output Voltage Low-Level Output Voltage High-Level Input Current Low-Level Input Current Short-Circuit Output Current (Note 2) Output Resistance Output Leakage Current RECEIVER SECTION High-Level Output Voltage Low-Level Output Voltage Positive-Going Input Threshold Voltage SYMBOL IIN ICC VOH VOL IOH IOL IOS rO IOFF TEST CONDITIONS MIN TYP MAX UNIT ±0.01 ±1 μA No load, PWRDOWN at VCC 0.3 1.0 mA No load, PWRDOWN at GND 1.0 10 μA ( EN , PWRDOWN ) DOUT at RL=3kΩ to GND, DIN=GND DOUT at RL=3kΩ to GND, DIN=VCC VI=VCC VI at GND VCC=3.6V, VOUT=0V VCC=5.5V, VOUT=0V VCC, V+ and V- =0V, VOUT=±2.0V +5.0 -5.0 300 (Note 1) +5.4 -5.4 ±0.01 ±0.01 ±35 ±35 10M ±1 ±1 ±60 ±60 V V μA μA mA mA Ω PWRDOWN =GND, VCC=3.0V~3.6V, VOUT=±12V ±25 μA PWRDOWN =GND, VCC=4.5V~5.5V, VOUT=±10V ±25 μA VOH VOL IOH=-1.0Ma V VCC-0.6V VCC- 0.1V IOL=1.6mA 0.4 V VCC=3.3V 1.5 2.4 V VIT+ VCC=5.0V 1.8 2.4 V VCC=3.3V 0.6 1.2 V Negative-Going Input VITThreshold Voltage VCC=5.0V 0.8 1.5 V Input Hysteresis VHYS VIT+~VIT0.3 V Output Leakage Current IOFF EN=VCC ±0.05 ±10 µA Input Resistance RI VI=±3.0V ~ ±25V 3 5 7 kΩ Notes: 1. All typical values are at VCC=3.3V or VCC=5.0V, and TA=25°C. 2. Short-circuit durations should be controlled to prevent exceeding the device absolute power-dissipation ratings, and not more than one output should be shorted at a time. 3. Test conditions are C1~C4=0.1μF at VCC=3.3V±0.3V; C1=0.047μF, C2~C4=0.33μF at VCC=5.0V±0.5V. 4. Pulse skew is defined as |tPLH−tPHL| of each channel of the same device. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 5 of 7 QW-R502-986.b UT3222 Preliminary CMOS IC SWITCHING CHARACTERISTICS [over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted) (see Note 3 and Table 1)] PARAMETER SYMBOL TEST CONDITIONS tSK(p) CL=1000pF, RL=3kΩ, One Driver Switching CL=220pF~2500pF, RL =3kΩ~7kΩ RL =3kΩ~7kΩ, CL=220pF~1000pF VCC=3.3V CL=220pF~2500pF MIN TYP (Note 1) 150 250 MAX UNIT DRIVER SECTION Maximum Data Rate Pulse Skew (Note 4) Slew Rate, Transition Region SR(tr) Kbit/s 300 5 3 ns 35 35 V/μs RECEIVER SECTION Propagation Delay Time, LowtPLH CL=150pF 300 ns to High-Level Output Propagation Delay Time, HightPHL CL=150pF 300 ns to Low-Level Output Output Enable Time tEN CL=150pF, RL=3kΩ 200 ns Output Disable Time tDIS CL=150pF, RL=3kΩ 200 ns Pulse Skew (Note 4) tSK(P) |tPLH−tPHL| 300 ns Notes: 1. All typical values are at VCC=3.3V or VCC=5.0V, and TA=25°C. 2. Short-circuit durations should be controlled to prevent exceeding the device absolute power-dissipation ratings, and not more than one output should be shorted at a time. 3. Test conditions are C1~C4=0.1μF at VCC=3.3V±0.3V; C1=0.047μF, C2~C4=0.33μF at VCC=5.0V±0.5V. 4. Pulse skew is defined as |tPLH−tPHL| of each channel of the same device. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 6 of 7 QW-R502-986.b UT3222 Preliminary CMOS IC TYPICAL APPLICATION CIRCUIT 1 EN 2 + - C3 + (Note 1) - C1 3 4 5 C2 + - 6 7 C4 DOUT2 RIN2 ROUT2 - Powerdown C1+ V+ C1- C2+ C2- V- VCC GND 20 PWRDOWN 19 18 17 16 15 14 + C - BYPASS DOUT1 RIN1 ROUT1 NC + 8 13 9 12 10 11 DIN1 DIN2 NC Notes: 1. C3 can be connected to VCC or GND. 2. Resistor values shown are nominal. 3. NC: No internal connection. 4. Nonpolarized ceramic capacitors are acceptable. If polarized tantalum or electrolytic capacitors are used, they should be connected as shown. Table1. Typical Operating Circuit and Capacitor Values VCC (V) 3.0~3.6 3.15~3.6 4.5~5.5 3.0~5.5 C1 (µF) 0.22 0.1 0.047 0.22 C2, C3, C4 (µF) 0.22 0.1 0.33 1.0 CBYPASS (µF) 0.22 0.1 0.047 0.22 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. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 7 of 7 QW-R502-986.b