SP3203E 3V RS-232 Serial Transceiver with Logic Selector and 15kV ESD Protection FEATURES 3 Driver / 2 Receiver Architecture C1+ 1 20 SHUTDOWN Logic selector function (V ) sets TTL L V+ 2 19 Vcc input/output levels for mixed logic C1- 3 18 GND systems Meets true EIA/TIA-232-F Standards from C2+ 4 17 T OUT 1 a +3.0V to +5.5V power supply 5 16 C2- SP3203E T OUT 2 Interoperable with EIA/TIA-232 and V- 6 15 T OUT 3 adheres to EIA/TIA-562 down to a +2.7V power source T IN 7 14 R IN 1 1 Minimum 250Kbps data rate under load T IN 8 13 R IN 2 2 Regulated Charge Pump Yields Stable 9 T IN 12 V L 3 RS-232 Outputs Regardless of V CC R OUT 10 11 R OUT Variations 2 1 ESD Specifications: +5KV Human Body Model +5KV IEC6 000-4-2 Air Discharge Now Available in Lead Free Packaging +8KV IEC6000-4-2 Contact Discharge Applications Palmtops Cell phone Data Cables PDA s DESCRIPTION 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. F 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 V pin to program the TTL input L 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 V for V and transmitter input logic levels L OH are scaled by the magnitude of the V input. L Exar Corporation 48720 Kato Road, Fremont CA, 94538 (50)668-70 7 www .exar.com SP3203E 00 208 0 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 Output Voltages rating conditions for extended periods of time may TxOUT.............................................................+ 3.2V affect reliability and cause permanent damage to the RxOUT, .......................................-0.3V to (V + 0.3V) L device. Short-Circuit Duration V .......................................................-0.3V to +6.0V CC TxOUT......................................................Continuous V+ (NOTE ).......................................-0.3V to +7.0V Storage Temperature.......................-65C to +50C V- (NOTE )........................................+0.3V to -7.0V V+ + V- (NOTE )...........................................+ 3V Power Dissipation per package I (DC V or GND current).........................+ 00mA CC CC Input Voltages o o 20-pin TSSOP (derate 7.0mW/ C above +70 C..560mW TxIN, SHUTDOWN .........................-0.3V to VL+0.3V RxIN...................................................................+25V NOTE 1: V+ and V- can have maximum magnitudes of 7V, but their absolute difference cannot exceed 3V . ELECTRICAL CHARACTERISTICS V = V = +3.0V to +5.5V, C - C4 = 0. F , tested at +3.3V +/-0%, C = 0.047F, C2 - C4 = 0.33F, tested at CC L +5.0V +/-0%, T = T to T , unless otherwise noted. Typical values are at Vcc = V = 3.3V, T = +25C. AMB MIN MAX L A PARAMETER MIN. TYP. MAX. UNITS CONDITIONS DC CHARACTERISTICS (Vcc = +3.3V or +5V, TA = +25C) Supply Current 0.3 mA SHUTDOWN = Vcc, No Load Supply Current, Shutdown .0 0.0 A SHUTDOWN = GND LOGIC INPUTS 0.8 V V = 3.3V or L TxIN , 5.0V Input Logic Threshold Low SHUTDOWN 0.6 V V = 2.5V L 2.4 V = 5.0V L 2.0 V = 3.3V TxIN , L Input Logic Threshold High V SHUTDOWN .4 V = 2.5V L 0.9 V = .8V L Transmitter Input Hysteresis 0.5 V Input Leakage Current +/-0.0 +/-.0 A TxIN, SHUTDOWN RECEIVER OUTPUTS Output Leakage Current +/-0.05 +/-0 A RxOUT, receivers disabled Output Voltage LOW 0.4 V I = .6mA OUT Output Voltage HIGH V - 0.6 V - 0. V I = - .0mA L L OUT Exar Corporation 48720 Kato Road, Fremont CA, 94538 (50)668-70 7 www .exar.com SP3203E 00 208 0 2