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SP3243EUEA-L Datasheet(PDF) 1 Page - Exar Corporation |
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SP3243EUEA-L Datasheet(HTML) 1 Page - Exar Corporation |
1 / 24 page Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com SP3243E_100_072309 1 SP3243E 3 Driver/5 Receiver Intelligent +3.0V to +5.5V RS-232 Transceivers 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 "U" and "H" 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 0.1µF 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 automatically "wake-up" 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 1µA. FEATURES ■ 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 ■ AUTO ON-LINE® circuitry automatically wakes up from a 1µA shutdown ■ Regulated Charge Pump Yields Stable RS-232 Outputs Regardless of V CC Variations ■ Enhanced ESD Specifications: +15kV Human Body Model +15kV IEC1000-4-2 Air Discharge +8kV IEC1000-4-2 Contact Discharge ■ 250 Kbps min. transmission rate (EB) ■ 1000 Kbps min. transmission rate (EU) ■ Ideal for High Speed RS-232 Applications DESCRIPTION SELECTION TABLE Now Available in Lead Free Packaging R4IN 1 2 3 4 25 26 27 28 5 6 7 24 23 22 SHUTDOWN C2- V- R1IN R2IN R3IN ONLINE C2+ C1- GND VCC V+ STATUS T1IN 8 9 10 11 18 19 20 21 12 13 14 17 16 15 R5OUT T1OUT T2OUT T3OUT T3IN T2IN R4OUT R5IN R3OUT R2OUT R1OUT R2OUT SP3243E C1+ Device Power Supplies RS-232 Drivers RS-232 Receivers External Components Auto On-Line Circuitry TTL 3- State # of Pins Data Rate ESD Rating 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 |
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