description
●The MAX3221 consists of one line driver, one line receiver, 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. These devices operate at data signaling rates up to 250 kbit/s and a maximum of 30-V/µs driver output slew rate.
●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
●One Driver and One Receiver
●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)
● − SNx5C3221
●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
