DESCRIPTION
The LTC®1348 is a 3-driver/5-receiver RS232 transceiver with very low supply current. The charge pump only requires five 0.1µF capacitors. The LTC1348 provides full RS232 output levels when operated over a wide supply range of 3V to 5.5V

FEATURES
■ Low Supply Current: 600µA at 3.3V
■ Supply Current in Shutdown: 0.2µA
■ Supply Current in Receiver Alive Mode: 15µA
■ ESD Protection over ±10kV
■ Operates from a Single 3V to 5.5V Supply
■ Operates to 120kBaud with 0.1µF Flying Capacitors
■ Three-State Outputs Are High Impedance When Off
■ Output Overvoltage Does Not Force Current Back into Supplies
■ RS232 I/O Lines Can Be Forced to ±25V Without Damage
■ Flowthrough Architecture

APPLICATIONS
■ Notebook Computers
■ Palmtop Computers
■ Printers
■ Portable Instruments