DESCRIPTION

The SP3220E devices are RS-232 driver/receiver solutions intended for portable or handheld applications such as palmtop computers, intrumentation and consumer products. These devices incorporate a high-efficiency, charge-pump power supply that allows the SP3220E devices to deliver true RS-232 performance from a single power supply ranging from +3.0V to +5.0V. This charge pump requires only 0.1μF capacitors in 3.3V operation. The ESD tolerance of the these devices are over +/-15kV for both Human Body Model and IEC61000-4-2 Air discharge test methods. All devices have a low-power shutdown mode where the driver outputs and charge pumps are disabled. During shutdown, the supply current falls to less than 1μA.

FEATURES

■ Meets all EIA/TIA-232-F Standards from a +3.0V to +5.5V power supply

? Interoperable with RS-232 and V.28 at +2.7V

■ Supports High Serial Data Rates:

? 120kbps SP3220E

? 250kbps SP3220EB

? 1Mbps SP3220EU

■ 1μA Low Power Shutdown Mode

■ Footprint Compatible with MAX3221E, ISL3221

■ 4 x 1.0μF External Charge Pump Capacitors

■ Improved ESD Specifications:

+15kV Human Body Model

+15kV IEC61000-4-2 Air Discharge

+8kV IEC61000-4-2 Contact Discharge