DESCRIPTION

The SP3249E device is an RS-232 transceiver solution intended for portable or hand-held applications such as notebook and palmtop computers. The SP3249E uses an internal high-efficiency, charge-pump power supply that requires only 0.1µF capacitors in 3.3V operation. This charge pump and Exars driver architecture allow the SP3249E device to deliver compliant RS-232 performance from a single power supply ranging from +3.0V to +5.5V. The SP3249E is a 5-driver / 3-receiver device that is ideal for laptop / notebook computer and PDA applications.

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

■ Minimum 250Kbps data rate under load

■ Regulated Charge Pump Yields Stable RS-232 Outputs Regardless of VCC Variations

■ Enhanced ESD Specifications:

+15kV Human Body Model

+15kV IEC61000-4-2 Air Discharge

+8kV IEC61000-4-2 Contact Discharge