XR32220

XR32220 2-Driver/2-Receiver Intelligent RS-232 Transceiver with 1.65V-5.5V Interface General Description The XR32220 product is a 2 driver/ 2 receiver RS-232 transceiver featuring a variable low voltage logic interface, down to 1.65V. This product is intended for portable or hand-held applications such as notebook and palmtop computers. The XR32220EBER device feature slew-rate limited outputs for reduced crosstalk and EMI. The XR32220EUER device is optimized for high speed with data rates up to 1Mbps, easily meeting the demands of high speed RS-232 applications. The XR32220 uses an internal high-efficiency charge-pump power supply that requires only four 0.1μF capacitors in 3.3V operation. This charge pump combined with Exar's driver architecture allow the XR32220 to deliver compliant RS-232 performance from a single power supply ranging from +3.0V to +5.5V. The AUTO ON-LINE® feature allows the device to automatically "wake-up" during a shutdown state when an RS-232 cable is connected and a connected peripheral is turned on. Otherwise, the device automatically shuts itself down drawing less than 1μA. FEATURES Meets true EIA/TIA-232-F Standards from a +3.0V to 5.5V power supply Interoperable with EIA/TIA-232 and adheres to EIA/TIA-562 down to a +2.7V power source 1.65V to 5.5V Logic Interface VL pin AUTO ON-LINE circuitry automatically wakes up from a 1A shutdown Regulated Charge Pump yields stable RS-232 Outputs regardless of VCC variations Enhanced ESD Specific...