Features and Benefits

  • 2MHz SCK Over 10m, Operation Up to 600m
  • Three Extended Slave Selects
  • Protected from Overvoltage Lines Fault to ±60V
  • ±40kV ESD on Link Pins
  • IEC Level 4 ESD ±8kV and EFT ±5kV on Link Pins
  • Extended Common Mode Range: ±25V
  • Extended Interrupt
  • Separate Programmable SPI Modes
  • Link Galvanic Isolation Supported
  • 3V to 5.5V Supply Voltage
  • 1.62V to 5.5V Logic Supply
  • 4mm × 5mm 20-Lead QFN package

Product Details

The LTC4332 is a point-to-point rugged SPI extender designed for operation in high noise industrial environments over long distances. Using a ±60V fault protected RS485 transceiver, the LTC4332 can transmit SPI data, including an interrupt signal, up to 2MHz over two twisted pair cables. The extended common mode range and high common mode rejection on the differential link provides tolerance to large ground differences between nodes. The LTC4332 also supports external galvanic isolation on the link.

The LTC4332 provides a control interface using a separate slave select for configuration and fault monitoring.


  • Industrial Control and Sensors
  • Lighting and Sound System Control

Product Lifecycle icon-recommended Pre-Release

This product is new and engineering validation may still be underway. Quantities may be limited and design specifications may change while we ready the product for release to production.

Tools & Simulations

IBIS Models

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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