LTC1385CG

RS-232接口集成电路 LTC1385 - 3.3V Low Power EIA/TIA-562 Transceiver

DESCRIPTION

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 space saving 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.

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 LT1180A

APPLICATIONS

■ Notebook Computers

■ Palmtop Computers