DESCRIPTION
The SP3220 device is an RS-232 driver/receiver solution intended for portable or hand-held applications such as notebook or palmtop computers. The SP3220 device has a highefficiency, charge-pump power supply that requires only 0.1µF capacitors in 3.3V operation. This charge pump allows the SP3220 device to deliver true RS-232 performance from a single power supply ranging from +3.3V to +5.0V.
The SP3220 device has a low-power shutdown mode where the driver outputs and charge pumps are disabled. During shutdown, the supply current falls to less than 1µA.

■ Meets True RS-232 Protocol Operation From A +3.0V to +5.5V Power Supply
■ Minimum 120 Kbps Data Rate Under Full Load
■ 1µA Low-Power Shutdown With Receivers Active
■ Interoperable With RS-232 Down To +2.7V Power Source
■ Pin-Compatible With The MAX3221E Device Without The AUTO ON-LINE® Feature
■ ESD Specifications: +2kV Human Body Model