SP3203EEY-L EXAR | Alldatasheet

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Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-707 • www.exar.com SP3203E_00_2080 SP3203E 3V RS-232 Serial Transceiver with Logic Selector and 15kV ESD Protection

FEATURES

  • 3 Driver / 2 Receiver Architecture
  • Logic selector function (VL) sets TTL input/output levels for mixed logic systems
  • Meets true EIA/TIA-232-F Standards from a +3.0V to +5.5V power supply
  • Interoperable with EIA/TIA-232 and adheres to EIA/TIA-562 down to a +2.7V power source
  • Minimum 250Kbps data rate under load
  • Regulated Charge Pump Yields Stable RS-232 Outputs Regardless of VCC Variations
  • ESD Specifications: +5KV Human Body Model +5KV IEC6000-4-2 Air Discharge +8KV IEC6000-4-2 Contact Discharge
  • Applications
  • Palmtops
  • Cell phone Data Cables
  • PDA's

DESCRIPTION

Now Available in Lead Free Packaging 4 17 SHUTDOWNC1+ C1- C2+ C2- T2OUT GND Vcc T1OUT R1OUT 10 11 R1IN R2OUT SP3203E T2IN R2IN VL T3OUT T3IN T1IN The SP3203E provides a RS-232 transceiver solution for portable and hand-held applications such as palmtops, PDA's and cell phones. The SP3203E uses an internal high-efficiency, charge-pump power supply that requires only 0.µF capacitors during 3.3V operation. This charge pump and Exar's driver architecture allow the SP3203E to deliver compliant RS-232 performance from a single power supply ranging from +3.0V to +5.5V. The SP3203E is a 3-driver/2-receiver device, with a unique VL pin to program the TTL input and output logic levels to allow inter operation in mixed-logic voltage systems such as PDA's and cell phones. Receiver outputs will not exceed VL for VOH and transmitter input logic levels are scaled by the magnitude of the VL input.

Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-707 • www.exar.com SP3203E_00_2080 ABSOLUTE MAXIMUM RATINGS These are stress ratings only and functional operation of the device at these ratings or any other above those indicated in the operation sections of the specifications below is not implied. Exposure to absolute maximum rating conditions for extended periods of time may affect reliability and cause permanent damage to the device. Input Voltages Output Voltages Short-Circuit Duration Power Dissipation per package 20-pin TSSOP (derate 7.0mW/oC above +70oC..560mW NOTE 1: V+ and V- can have maximum magnitudes of 7V, but their absolute difference cannot exceed 3V. +5.0V +/-0%, TAMB = TMIN to TMAX, unless otherwise noted. Typical values are at Vcc = VL = 3.3V, TA = +25ºC.

ELECTRICAL CHARACTERISTICS

PARAMETER MIN. TYP. MAX. UNITS CONDITIONS DC CHARACTERISTICS (Vcc = +3.3V or +5V, TA = +25ºC) Supply Current 0.3 mA SHUTDOWN = Vcc, No Load Supply Current, Shutdown .0 0.0 µA SHUTDOWN = GND LOGIC INPUTS Input Logic Threshold Low 0.8 V TxIN , SHUTDOWN VL = 3.3V or 5.0V 0.6 V VL = 2.5V Input Logic Threshold High 2.4 V TxIN , SHUTDOWN VL = 5.0V 2.0 VL = 3.3V .4 VL = 2.5V 0.9 VL = .8V Transmitter Input Hysteresis 0.5 V Input Leakage Current +/-0.0 +/-.0 µA TxIN, SHUTDOWN RECEIVER OUTPUTS Output Leakage Current +/-0.05 +/-0 µA RxOUT, receivers disabled Output Voltage LOW 0.4 V IOUT = .6mA Output Voltage HIGH VL - 0.6 VL - 0. V IOUT = -.0mA

Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-707 • www.exar.com SP3203E_00_2080 +5.0V +/-0%, TAMB = TMIN to TMAX, unless otherwise noted. Typical values are at Vcc = VL = 3.3V, TA = +25ºC. PARAMETER MIN. TYP. MAX. UNITS CONDITIONS RECEIVER INPUTS Input Voltage Range -25 +25 V Input Threshold Low 0.8 .5 V TA = +25ºC VL = 5.0V 0.6 .2 V VL = 2.5V or 3.3V Input Threshold High .8 2.4 V TA = +25ºC VL = 5.0V .5 2.4 V VL = 2.5V or 3.3V Input Hysteresis 0.5 V Input Resistance 3 5 7 k Ω TRANSMITTER OUTPUTS Output Voltage Swing +/-5.0 +/-5.4 V All transmitter outputs loaded with 3kΩ to GND, TAMB = +25ºC Output Resistance 300 0M Ω Vcc = V+ = V- = 0V, Vout = +/-2V Output Short-Circuit Current +/-60 mA Vout = 0V Output Leakage Current +/-25 µA Vcc = 0V or 3.0V to 5.5V, Vout = +/-2V, Driver disabled ESD PROTECTION RxIN, TxOUT +/-5 kV Human Body Model +/-5 kV IEC 6000-4-2 Air Gap Discharge +/-8 kV IEC 6000-4-2 Contact Discharge

Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-707 • www.exar.com SP3203E_00_2080 Unless otherwise noted, the following specifications apply for VCC = +3.0V to +5.5V with TAMB = TMIN to TMAX. Typical values apply at VCC = +3.3V or +5.0V and TAMB = 25°C. TIMING CHARACTERISTICS PARAMETER MIN. TYP. MAX. UNITS CONDITIONS Maximum Data Rate 250 kbps RL = 3kΩ, CL = 000pF, one transmitter switching Receiver Propagation Delay, tPHL 0.5 µs Receiver input to Receiver output, CL = 50pFReceiver Propagation Delay, tPLH 0.5 Receiver Output Enable Time 200 ns Normal Operation Receiver Output Disable Time 200 ns Normal Operation Time To Exit Shutdown 00 µs │VTxOUT │> 3.7V Transmitter Skew │tPHL - tPLH│ 00 ns (Note 2) Receiver Skew │tPHL - tPLH│ 50 ns Transition-Region Slew Rate 6 30 V/µs CL = 50pF to 000pF Vcc = 3.3V, TAMB = 25°C, RL = 3KΩ to 7KΩ, measure- ments taken from -3.0V to +3.0V or +3.0V to -3.0V 4 30 CL = 50pF to 2500pF Note 2. Transmitter skew is measured at the transmitter zero crosspoint.

Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-707 • www.exar.com SP3203E_00_2080 Figure . SP3203E Typical Operating Circuit TYPICAL OPERATING CIRCUIT SP3203E GND T1IN T2IN C1+ C1- C2+ C2- VCC

16 RS-232

+3V to +5.5V 5KΩ R1OUT11 14 5KΩ R2INR2OUT10 13 TTL/CMOS OUTPUTS R1IN T2OUT T1OUT Shutdown 20 12 VL T3IN9 15T3OUT 0.1µF 0.1µF 0.1µF 0.1µF 0.1µF

Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-707 • www.exar.com SP3203E_00_2080 PIN DESCRIPTION Name Function Pin # C+ Positive terminal of the voltage doubler charge-pump capacitor V+ Regulated +5.5V output generated by charge pump 2 C- Negative terminal of the voltage doubler charge-pump capacitor 3 C2+ Positive terminal of the inverting charge-pump capacitor 4 C2- Negative terminal of the inverting charge-pump capacitor 5 V- Regulated -5.5V output generated by charge pump 6 TIN TTL/CMOS driver input 7 T2IN TTL/CMOS driver input 8 T3IN TTL/CMOS driver input 9 R2OUT TTL/CMOS receiver output 0 ROUT TTL/CMOS receiver output VL Logic-Level Supply Voltage Selection 2 R2IN RS-232 receiver input 3 RIN RS-232 receiver input 4 T3OUT RS-232 Driver output 5 T2OUT RS-232 Driver output 6 TOUT RS-232 Driver output 7 GND Ground 8 Vcc +3.0V to +5.5V supply voltage 9 SHUTDOWN Apply logic LOW to shut down drivers and charge pump. 20

Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-707 • www.exar.com SP3203E_00_2080 The SP3203E is a 3-driver/2-receiver device ideal for portable or handheld applications. The SP3203E transceivers meet the EIA/ TIA-232 and ITU-T V.28/V.24 communication protocols and can be implemented in battery- powered, portable, or handheld applications such as notebook or palmtop computers, PDA's and cell phones. The SP3203E device features Exar's proprietary and patented (U.S.-- 5,306,954) on-board charge pump circuitry that generates ±5.5V RS-232 volt- age levels from a single +3.0V to +5.5V power supply. The SP3203E can operate at a minimum data rate of 250kbps. THEORY OF OPERATION The SP3203E is made up of four basic circuit blocks: . Drivers, 2. Receivers, 3. The Exar propri- etary charge pump, and 4. VL circuitry. Drivers The drivers are inverting level transmitters that convert TTL or CMOS logic levels to 5.0V EIA/TIA-232 levels with an inverted sense relative to the input logic levels. Typically, the RS-232 output voltage swing is +5.4V with no load and +5V minimum fully loaded. The driver outputs are protected against infinite short-circuits to ground without degradation in reliability. These drivers comply with the EIA-TIA-232F and all previous RS-232 ver- sions. The driver output stages are turned off (High Impedance) when the device is in shutdown mode. The drivers can guarantee output data rates fully loaded with 3kΩ in parallel with 1000pF, ensuring compatibility with PC-to-PC com- munication software. The slew rate of the driver output is internally limited to a maximum of 30V/µs in order to meet the EIA standards (EIA RS-232D 2..7, Paragraph 5). The transition of the loaded output from HIGH to LOW also meets the monotonicity requirements of the standard. Figure 2 shows a loopback test circuit used to test the RS-232 Drivers. Figure 3 shows the test results with all drivers active at 20kbps with typical RS-232 loads in parallel with a 000pF capacitors. Figure 4 shows the test results where one driver was active at 250kbps and all three drivers loaded with an RS-232 receiver in parallel with a 000pF capacitor. The transmitter inputs do not have pull-up resistors. Connect unused inputs to ground or VL. Receivers The receivers convert ±5.0V EIA/TIA-232 levels to TTL or CMOS logic output levels. Receivers are disabled when in shutdown. The truth table logic of the SP3203E driver and receiver outputs can be found in Table Since receiver input is usually from a trans- mission line where long cable lengths and system interference can degrade the signal, the inputs have a typical hysteresis margin of 500mV. This ensures that the receiver is virtually immune to noisy transmission lines. Should an input be left unconnected, an internal 5kΩ pull-down resistor to ground will commit the output of the receiver to a HIGH state. Charge Pump The charge pump is a patented design (U.S. 5,306,954) and uses a unique approach compared to older less–efficient designs. The charge pump still requires four external capacitors, but uses a four–phase voltage shifting technique to attain symmetrical 5.5V power supplies. The internal power supply consists of a regulated dual charge pump that provides output voltages of +/-5.5V regardless of input voltage (V CC) over the +3.0V to +5.5V range. This is important to maintain compliant RS- 232 levels regardless of power supply fluctuations.

ing. A description of each phase follows. tors C and C2 are initially charged to V CC. capacitor C2 is now 2 times VCC. regulated to a minimum voltage of -5.5V. Table 2. SHUTDOWN Truth Tables Figure 2. Loopback Test Circuit for RS-232 Driver lowing the charge pump cycle to begin again. inefficiencies in the design.

0 High-Z High-Z Inactive

  1. Received Line Signal Detector

Figure 0. Circuit for the connectivity of the SP3203E with a DB-9 connector

Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-707 • www.exar.com SP3203E_00_2080 ESD TOLERANCE The SP3203E incorporates ruggedized ESD cells on all driver output and re - ceiver input pins. The ESD structure is improved over our previous family for more rugged applications and environments sensitive to electro-static discharges and associated transients. The improved ESD tolerance is at least +5kV without damage nor latch-up. There are different methods of ESD testing applied: a) MIL-STD-883, Method 305.7 b) IEC6000-4-2 Air-Discharge c) IEC6000-4-2 Direct Contact The Human Body Model has been the generally accepted ESD testing method for semiconductors. This method is also specified in MIL-STD-883, Method 3015.7 for ESD testing. The premise of this ESD test is to simulate the human body’s potential to store electro-static energy and discharge it to an integrated circuit. The simulation is performed by using a test model as shown in Figure . This method will test the IC’s capability to withstand an ESD transient during normal handling such as in manu - facturing areas where the IC's tend to be handled frequently. The IEC-6000-4-2, formerly IEC80-2, is generally used for testing ESD on equipment and systems. For system manufacturers, they must guarantee a certain amount of ESD protection since the system itself is ex- posed to the outside environment and human presence. The premise with IEC6000-4-2 is that the system is required to withstand an amount of static electricity when ESD is applied to points and surfaces of the equipment that are accessible to personnel during normal usage. The transceiver IC receives most of the ESD current when the ESD source is applied to the connector pins. The test circuit for IEC6000-4-2 is shown on Figure 2. There are two methods within IEC6000-4-2, the Air Discharge method and the Contact Discharge method. With the Air Discharge Method, an ESD voltage is applied to the equipment under test (EUT) through air. This simulates an electrically charged person ready to connect a cable onto the rear of the system only to find an unpleas - ant zap just before the person touches the back panel. The high energy potential on the person discharges through an arcing path to the rear panel of the system before he or she even touches the system. This energy, whether discharged directly or through air, is predominantly a function of the discharge current rather than the discharge voltage. Variables with an air discharge such as approach speed of the object carrying the ESD potential to the system and humidity will tend to change the discharge current. For example, the rise time of the discharge current varies with the approach speed. The Contact Discharge Method applies the ESD current directly to the EUT. This method was devised to reduce the unpredictability of the ESD arc. The discharge current rise time is constant since the energy is directly transferred without the air-gap arc. In situ- ations such as hand held systems, the ESD charge can be directly discharged to the equipment from a person already holding the equipment. The current is transferred on to the keypad or the serial port of the equipment directly and then travels through the PCB and finally to the IC. Figure . ESD Test Circuit for Human Body Model

Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-707 • www.exar.com SP3203E_00_2080 PACKAGE: 20 Pin TSSOP

Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-707 • www.exar.com SP3203E_00_2080 Part Number Temperature Range Package Types Note: "-L" indicates lead free packaging, "/TR" is for tape and reel option

ORDERING INFORMATION

Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-707 • www.exar.com SP3203E_00_2080 DATE REVISION DESCRIPTION 03-0-05 --- Legacy Sipex datasheet Dec 200 .0.0 Convert to Exar datasheet format and remove EOL parts.

REVISION HISTORY

EXAR Corporation reserves the right to make changes to any products contained in this publication in order to improve design, performance or reliability. EXAR Corporation assumes no representation that the circuits are free of patent infringement. Charts and schedules contained herein are only for illustration purposes and may vary depending upon a user's specific application. While the information in this publication has been carefully checked; no responsibility, however, is assumed for inaccuracies. EXAR Corporation does not recommend the use of any of its products in life support applications where the failure or malfunction of the product can reasonably be expected to cause failure of the life support system or to significantly affect its safety or effectiveness. Products are not authorized for use in such applications unless EXAR Corporation receives, in writing, assurances to its satisfaction that: (a) the risk of injury or damage has been minimized ; (b) the user assumes all such risks; (c) potential liability of EXAR Corporation is adequately protected under the circumstances. Copyright 200 EXAR Corporation Datasheet December 200 For technical support please email Exar's Serial Technical Support group at: serialtechsupport@exar.com Reproduction, in part or whole, without the prior written consent of EXAR Corporation is prohibited.