SP3220B Description
The SP3220B/U device is an RS-232 driver/receiver solution intended for portable or hand-held applications such as notebook or palmtop puters. The SP3220B/U device has a highefficiency, charge-pump power supply that requires only 0.1µF capacitors in 3.3V operation. This charge pump allows the SP3220B/U device to deliver true RS-232 performance from a single power supply ranging from +3.3V to +5.0V.