SP3243E 3 Driver/5 Receiver Intelligent +3.0V to +5.5V RS-232 Transceivers FEATURES C2+ 1 28 C1+ Meets true EIA/TIA-232-F Standards C2- 2 27 V+ from a +3.0V to +5.5V power supply 3 VCC Interoperable with EIA/TIA-232 and V- 26 adheres to EIA/TIA-562 down to a +2.7V 4 25 GND R IN 1 power source R IN 5 24 C1- 2 AUTO ON-LINE circuitry automatically SP3243E R IN 23 6 3 ONLINE wakes up from a 1A shutdown 7 22 R IN SHUTDOWN 4 Regulated Charge Pump Yields Stable R IN 8 21 STATUS 5 RS-232 Outputs Regardless of V CC T OUT 9 R OUT 20 1 2 Variations T OUT 10 19 R OUT 2 1 Enhanced ESD Specifications: T OUT 11 18 R OUT 3 2 +15kV Human Body Model T IN 12 17 R OUT 3 3 +15kV IEC61000-4-2 Air Discharge 13 16 T IN R OUT +8kV IEC61000-4-2 Contact Discharge 2 4 T IN 14 15 250 Kbps min. transmission rate (EB) 1 R OUT 5 1000 Kbps min. transmission rate (EU) Ideal for High Speed RS-232 Applications Now Available in Lead Free Packaging DESCRIPTION The SP3243E products are 3 driver/5 receiver RS-232 transceiver solutions intended for portable or hand-held applications such as notebook and palmtop computers. The SP3243E includes one complementary receiver that remains alert to monitor an external device s Ring Indicate signal while the device is shutdown. The SP3243E and EB devices feature slew-rate limited outputs for reduced crosstalk and EMI. The and series are optimized for high speed with data rates up to 1Mbps, easily meeting the demands of high speed RS-232 applications. The SP3243E series uses an internal high-efficiency, charge-pump power supply that requires only 0.1F capacitors in 3.3V operation. This charge pump and Exar s driver architecture allow the SP3243E series to deliver compliant RS-232 performance from a single power supply ranging from +3.0V to +5.5V. The AUTO ON-LINE feature allows the device to automaticallywake-u during a shutdown state when an RS-232 cable is con- nected and a connected peripheral is turned on. Otherwise, the device automatically shuts itself down drawing less than 1A. SELECTION TABLE Device Power RS-232 RS-232 External Auto TTL of Data ESD Supplies Drivers Receivers Components On-Line 3- Pins Rate Rating Circuitry State SP3243E +3.0V to +5.5V 3 5 4 Capacitors Yes Yes 28 120 15kV SP3243EB +3.0V to +5.5V 3 5 4 Capacitors Yes Yes 28 250 15kV SP3243EH +3.0V to +5.5V 3 5 4 Capacitors Yes Yes 28 460 15kV SP3243EU +3.0V to +5.5V 3 5 4 Capacitors Yes Yes 28 1000 15kV Exar Corporation 48720 Kato Road, Fremont CA, 94538 510-668-7017 www.exar.com SP3243E 102 060611 1ABSOLUTE 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. Power Dissipation per package V .......................................................-0.3V to +6.0V CC o o 28-pin SOIC (derate 12.7mW/ C above +70 C).........1000mW V+ (NOTE 1).......................................-0.3V to +7.0V o o 28-pin SSOP (derate 11.2mW/ C above +70 C)..........900mW V- (NOTE 1)........................................+0.3V to -7.0V o o 28-pin TSSOP (derate 13.2mW/ C above +70 C)......1059mW V+ + V- (NOTE 1)...........................................+13V o o 32-pin QFN (derate 29.4mW/ C above +70 C)...........2352mW I (DC V or GND current).........................+100mA CC CC Input Voltages TxIN, ONLINE,SHUTDOWN, .....-0.3V to Vcc +6.0V RxIN...................................................................+15V Output Voltages TxOUT.............................................................+13.2V RxOUT, STATUS.......................-0.3V to (V +0.3V) CC Short-Circuit Duration TxOUT....................................................Continuous Storage Temperature......................-65C to +150C NOTE 1: V+ and V- can have maximum magnitudes of 7V, but their absolute difference cannot exceed 13V. ELECTRICAL CHARACTERISTICS Unless otherwise noted, the following specifications apply for V = +3.0V to +5.5V with T = T to T , CC AMB MIN MAX C1 - C4 = 0.1F. Typical values apply at V = +3.3V or +5.0V and T = 25C. CC AMB PARAMETER MIN. TYP. MAX. UNITS CONDITIONS DC CHARACTERISTICS Supply Current, AUTO ON- 1.0 10 A All RxIN open, ONLINE = GND, LINE SHUTDOWN = V , V = 3.3V CC CC o T = 25 C, TxIN = GND or V AMB CC Supply Current, Shutdown 1.0 10 A SHUTDOWN = GND, VCC = 3.3V, o T = 25 C, TxIN = Vcc or GND AMB Supply Current 0.3 1.0 mA ONLINE = SHUTDOWN = Vcc, no o AUTO ON-LINE Disabled load, V = 3.3V, T = +25 C, CC AMB TxIN = GND or V CC LOGIC INPUTS AND RECEIVER OUTPUTS Input Logic Threshold V = =3.3V or =5.0V, TxIN CC LOW 0.8 V ONLINE, SHUTDOWN HIGH 2.4 V Input Leakage Current +0.01 +1.0 A TxIN, ONLINE, SHUTDOWN, o T = +25 C, V = 0V to V AMB IN CC Output Leakage Current +0.05 +10 A Receivers disabled, V = 0V to V OUT CC Output Voltage LOW 0.4 V I = 1.6mA OUT Output Voltage HIGH V -0.6 V -0.1 V I = -1.0mA CC CC OUT DRIVER OUTPUTS Output Voltage Swing +5.0 +5.4 V All driver outputs loaded with 3K to o GND, T = +25 C AMB Exar Corporation 48720 Kato Road, Fremont CA, 94538 510-668-7017 www.exar.com SP3243E 102 060611 2