The TRS202E consists of two line drivers, two line
receivers, and a dual charge-pump circuit. TRS202E has IEC61000-4-2 (Level 4) ESD
protection pin-to-pin (serial-port connection pins, including GND). The device meets
the requirements of TIA/EIA-232-F and provides the electrical interface between an
asynchronous communication controller and the serial-port connector. The charge pump
and four small external capacitors allow operation from a single 5V supply. The
device operates at data signaling rates up to 120kbit/s and a maximum of 30V/µs driver output slew rate.