Features and Benefits

  • Single Chip Provides All V.35 Differential Clock and Data Signals
  • Operates From Single 5V Supply
  • Software Selectable DTE or DCE Configuration
  • Transmitters and Receivers Will Withstand Repeated ±10kV ESD Pulses
  • Shutdown Mode Reduces Icc to 1µA Typ
  • 10MBaud Transmission Rate
  • Transmitter Maintains High Impedance When Disabled, Shut Down, or with Power Off
  • Meets CCITT V.35 Specification
  • Transmitters are Short-Circuit Protected

Product Details

The LTC1345 is a single chip transceiver that provides the differential clock and data signals for a V.35 interface from a single 5V supply. Combined with an external resistor termination network and an LT1134A RS232 transceiver for the control signals, the LTC1345 forms a complete low power DTE or DCE V.35 interface port operating from a single 5V supply.

The LTC1345 features three current output differential transmitters, three differential receivers, and a charge pump. The transceiver can be configured for DTE or DCE operation or shut down using two Select pins. In the Shutdown mode, the supply current is reduced to 1µA.

The transceiver operates up to 10Mbaud. All transmitters feature short-circuit protection and a Receiver Output Enable pin allows the receiver outputs to be forced into a high impedance state. Both transmitter outputs and receiver inputs feature ±10kV ESD protection. The charge pump features a regulated VEE output using three external 1µF capacitors.


  • Modems
  • Telecommunications
  • Data Routers

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

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The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

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