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( File format: PDF, 207854 )
3.3V Low Power EIA/TIA-562 Transceiver
Linear Technology Inc.

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 spacesaving 0.1?F capacitors. The transceiver operates in one of three modes: Normal, Driver Disable or Shutdown. In the Normal mode, ICC is only 200?A 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 35?A. In the Shutdown mode, everything is turned off and ICC drops to 0.2?A. 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 SupplyLow Supply Current: ICC = 200?AICC = 35?A in Driver Disable ModeICC = 0.2?A in Shutdown ModeESD Protection Over ±10kVUses Small Capacitors: 0.1?FOperates to 120kBaudOutput Overvoltage Does Not Force Current Back into SuppliesEIA/TIA-562 I/O Lines Can Be Forced to 25V Without DamagePin Compatible with LT 1180A




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