RS-232 Bus-Pin ESD Protection Exceeds

±15 kV Using Human-Body Model (HBM)

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 Standby Current . . . 1 μA Typical

External Capacitors . . . 4 × 0.1 μF

Accepts 5-V Logic Input With 3.3-V Supply

Alternative High-Speed Pin-Compatible

Device (1 Mbit/s)

− SNx5C3223

Applications

− Battery-Powered Systems, PDAs,

Notebooks, Laptops, Palmtop PCs, and

Hand-Held Equipment

description/ordering information

The MAX3223 consists of two line drivers, two line receivers, and a dual charge-pump circuit with ±15-kV 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 device operates at data signaling rates up to 250 kbit/s and a maximum of 30-V/μs

driver output slew rate.