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LTC1385 - 3.3V Low Power EIA/TIA-562 Transceiver

The LTC®1385 is an ultra-low power, 2-driver/2-receiver EIA / TIA-562 transceiver which operates from a single 3.3V supply. The charge pump requires only four spacesaving 0.1µF capacitors.

The transceiver operates in one of three modes: Normal, Driver Disable or Shutdown. In the Normal mode, ICC is only 200µA in the unloaded condition. In the Driver Disable mode, the charge pump is turned off, the driver outputs are forced into three-state, both receivers are kept active, and ICC drops to 35µA. In the Shutdown mode, everything is turned off and ICC drops to 0.2µA.

The LTC1385 is fully compliant with all data rate and overvoltage EIA/ TIA-562 specifications. The transceiver can operate up to 120kbaud with a 1000pF, 3k Ohm load. Both driver outputs and receiver inputs can be forced to ±25V without damage, and can survive multiple ±10kV ESD strikes.

Features Operates from a Single 3.3V Supply Low Supply Current: ICC = 200µA ICC = 35µA in Driver Disable Mode ICC = 0.2µA in Shutdown Mode ESD Protection Over ±10kV Uses Small Capacitors: 0.1µF Operates to 120kBaud Output Overvoltage Does Not Force Current Back into Supplies EIA/TIA-562 I/O Lines Can Be Forced to ±25V Without Damage Pin Compatible with LT 1180A Typical Application

Applications Notebook Computers Palmtop Computers Packaging