1FEATURES
· Qualified for Automotive Applications
· ESD Protection for RS-232 Bus Pins
– ±15-kV Human Body Model (HBM)
– ±8 kV (IEC61000-4-2, Contact Discharge)
– ±15 kV (IEC61000-4-2, Air-Gap Discharge)
· Meets or Exceeds the Requirements of
TIA/EIA-232-F and ITU v.28 Standards
· Operates With 3-V to 5.5-V VCC Supply
· Operates up to 250 kbit/s
· Two Drivers and Two Receivers
· Low Supply Current: 300 mA (Typ)
· External Capacitors: 4 × 0.1 mF
· Accepts 5-V Logic Input With 3.3-V Supply
· Pin Compatible to Alternative High-Speed
Device (1 Mbit/s): TRSF3232E

DESCRIPTION
The TRS3232E device consists of two line drivers, two line receivers, and a dual charge-pump circuit with
±15-kV IEC 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 3-V to 5.5-V supply. The devices operate at data signaling rates up to 250 kbit/s and a maximum of
30-V/ms driver output slew rate.