The ST3232EBDR is a RS-232 Driver and Receiver for battery powered equipment and hand-held equipment. The ST3232E is a EIA/TIA-232 and V.28/V.24 communication interfaces with low power requirements, high data-rate capabilities and enhanced electrostatic discharge (ESD) protection to ±8kV using IEC1000-4-2 contact discharge and ±15kV using the human body model. It has a proprietary low dropout transmitter output stage providing true RS-232 performance from 3 to 5V supplies with a dual charge pump. The charge pump requires only four small 0.1μF standard external capacitors for operations from 3V supply.