DESCRIPTION
The SP3223 and SP3243 products are RS-232 transceiver solutions intended for portable or hand-held applications such as notebook and palmtop computers. The SP3223 and SP3243 use an internal high-efficiency, charge-pump power supply that requires only 0.1µF capacitors in 3.3V operation. This charge pump and Sipexs driver architecture allow the SP3223/SP3243 series to deliver compliant RS-232 performance from a single power supply ranging from +3.3V to +5.0V. The SP3223 is a 2-driver/2-receiver device, and the SP3243 is a 3-driver/5-receiver device ideal for laptop/notebook computer and PDA applications. The SP3243 includes one complementary receiver that remains alert to monitor an external devices Ring Indicate signal while the device is shutdown.

■ 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
■ Minimum 120Kbps data rate under load
■ Regulated Charge Pump Yields Stable RS-232 Outputs Regardless of VCC Variations
■ ESD Specifications: +2kV Human Body Model