DESCRIPTION

The SP3223EU and 3243EU products are RS-232 transceiver solutions intended for portable or hand held applications such as notebook and palmtop computers. The "U" series is based on Sipex's SP3223E/3243E series and has been enhanced for high speed. The data rate is improved to 1000kbps, easily meeting the demands of high speed RS-232 applications. The SP3223EU and 3243EU use an internal high-efficiency, charge-pump power supply that requires only 0.1µF capacitors in 3.3V operation. This charge pump and Sipex's driver architecture allow the SP3223EU/3243EU series to deliver compliant RS-232 performance from a single power supply ranging from +3.0V to +5.5V. The SP3223EU is a 2-driver/2-receiver device, and the SP3243EU is a 3-driver/5-receiver device, ideal for laptop/notebook computer and PDA applications. The SP3243EU includes one complementary receiver that remains alert to monitor an external device's 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
■Regulated Charge Pump Yields Stable RS-232 Outputs Regardless of VCC Variations
■Enhanced ESD Specifications:
+15kV Human Body Model
+15kV IEC1000-4-2 Air Discharge
+8kV IEC1000-4-2 Contact Discharge
■1000 Kbps minimum transmission rate
■Ideal for High Speed RS-232 Applications