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   The AT3232E 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/µs driver output slew rate.


  • ESD Protection for RS-232 Bus Pins

  • ±15 kV (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 µA Typ

  • External Capacitors . . . 4×0.1 µF

  • Accepts 5-V Logic Input With 3.3-V Supply

  • Pin Compatible to Alternative High-Speed

  • Device(1Mbit/s)SNx5C3232


  • Battery-Powered Systems

  • PDAs

  • Notebooks

  • Laptops

  • Palmtop PCs

  • Hand-Held Equipment

Application Information