DESCRIPTION
●The MAX3221E is a single driver, single receiver RS-232 solution operating from a single VCC supply. The RS-232 pins provide IEC G1000-4-2 ESD Protection. 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. These devices operate at data signaling rates up to 250 kbit/s and a maximum of 30-V/µs driver output slew rate.
●FEATURES
●• ESD Protection for RS-232 Pins
●– ±15 kV Human-Body Model (HBM)
●– ±8 kV (IEC 61000-4-2, Contact Discharge)
●– ±15 kV (IEC 61000-4-2, 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
●• One Driver and One Receiver
●• Low Standby Current . . . 1 µA Typ
●• 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)
●– SN75C3221E and SN65C3221E
●• Auto-Powerdown Feature Automatically Disables Drivers for Power Savings
●APPLICATIONS
●• Battery-Powered, Hand-Held, and Portable Equipment
●• PDAs and Palmtop PCs
●• Notebooks, Subnotebooks, and Laptops
●• Digital Cameras
●• Mobile Phones and Wireless Devices
