The MAX222 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). This 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 5-V supply. This device operates at data signaling rates up to 200 kbit/s and a maximum of 30-V/µs driver output slew rate. By using SHDN, all receivers can be disabled.
• ESD Protection for RS-232 Bus Pins
− ±15-kV Human-Body Model
• Meets or Exceeds the Requirements of TIA/EIA-232-F and ITU v.28 Standards
• Operates at 5-V VCC Supply
• Operates Up To 200 kbit/s
• Low Supply Current in Shutdown
Mode . . . 2 µA Typical
• External Capacitors . . . 4 × 0.1 µF
• Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
