LTC4332CUFD#TRPBF

Signal Buffers, Repeaters, Splitters Overview

The LTC4332CUFD#TRPBF is a rugged SPI extender designed for high-noise industrial environments. It transmits SPI data and interrupt signals up to 2MHz over two twisted pair cables using a ±60V fault-protected differential transceiver. The device supports an extended common mode range of ±25V to tolerate large ground differences between nodes. It operates with a VCC supply of 3V to 5.5V and a logic supply (VL) of 1.62V to 5.5V. The component is housed in a 4mm × 5mm 20-lead QFN package and provides three extended slave selects for remote device access.

Signal Buffers, Repeaters, Splitters Feature Summary

• Point-to-point rugged SPI extension over long distances using a differential link tolerant to large ground potential differences.
• Integrated ±60V fault-protected differential transceiver with extended common mode range for operation in noisy industrial environments.
• Supports transmission of SPI data and interrupt signals at speeds up to 2MHz over twisted pair cabling.
• Provides three independent extended slave select lines and a shared interrupt signal for remote node management.

Signal Buffers, Repeaters, Splitters Applications

• Industrial control systems requiring robust communication over long cable runs.
• Sensor networks operating in high electromagnetic interference environments.
• Lighting and sound system control infrastructure.

Signal Buffers, Repeaters, Splitters Procurement Notes

Verify the specific temperature grade suffix, as the CUFD designation indicates the commercial range (0°C to 70°C). Ensure the #TRPBF suffix matches the required tape and reel packaging format for automated assembly processes. Confirm that the local source material aligns with the final ordering specifications before procurement.

Signal Buffers, Repeaters, Splitters Selection Notes

Select this component when extending SPI buses beyond standard limits while maintaining noise immunity. Ensure the application requires point-to-point connectivity, as multidrop configurations on the differential link are not supported. Verify that the cable length and selected baud rate configuration remain within the performance limits defined in the datasheet tables.

Signal Buffers, Repeaters, Splitters Part Context

This part belongs to the LTC4332 series of SPI extenders manufactured by Analog Devices Inc. The CUFD variant specifically denotes the commercial temperature grade operating from 0°C to 70°C. Other variants in the series include the IUFD for industrial (-40°C to 85°C) and HUFD for automotive/high-temp (-40°C to 125°C) ranges, all sharing the same 20-lead QFN footprint.

Signal Buffers, Repeaters, Splitters Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Direct replacement requires verifying pin compatibility and electrical characteristics against the original design requirements.