The TRS3232 device consists of two line drivers, two line receivers, and a dual
charge-pump circuit with ±15-kV ESD protection terminal-to-terminal (serial-port connection
terminals, 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 one
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3-V to 5.5-V supply. The devices operate at data-signaling rates up to 250 kbps and a maximum
of 30-V/µs driver-output slew rate.