LTC2876HMS8E#TRPBF

Drivers, Receivers, Transceivers Overview

The LTC2876HMS8E#TRPBF is a PROFIBUS RS485 transceiver in an 8-lead MSOP package. It supports data rates up to 20Mbps and tolerates ±60V bus faults with ±52kV ESD protection on interface pins. The primary supply (VCC) operates from 3.0V to 5.5V, while the logic supply (VL) is exclusive to the LTC2877 variant. Key electrical parameters include a typical shutdown current of 12µA, a receiver input common-mode range of ±25V, and a differential hysteresis of 240mV. It functions within an extended temperature range of –40°C to +125°C.

Drivers, Receivers, Transceivers Feature Summary

• Exceptional robustness against harsh environments, including tolerance for ±60V line faults and high ESD immunity.
• Fully compliant with PROFIBUS-DP masters/slaves and IEC 61158-2 Type 3 MAU specifications.
• Enhanced communication reliability through extended ±25V common-mode range and full failsafe operation.
• Low power consumption capabilities allowing operation down to 3V for reduced supply current.

Drivers, Receivers, Transceivers Applications

• PROFIBUS networks compliant with IEC 61158-2
• Industrial communication systems requiring fault protection
• RS485 and RS422 serial communication interfaces
• Harsh industrial environments with potential overvoltage exposure

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging rather than tube. Confirm the 'H' grade corresponds to the –40°C to +125°C operating temperature range. Ensure the ordering code matches the exact pinout and lead finish requirements for your assembly process. Cross-reference the manufacturer's latest documentation for any product change notifications affecting this specific part number.

Drivers, Receivers, Transceivers Selection Notes

Select the LTC2876 when a single 5V logic supply is sufficient for both the driver/receiver and digital interface. Choose the LTC2877 if independent low-voltage logic interfacing (down to 1.65V) is required via a separate VL pin. Consider the MSOP-8 package for space-constrained designs requiring exposed pad soldering for thermal management and grounding.

Drivers, Receivers, Transceivers Part Context

This component belongs to the LTC2876/LTC2877 family of rugged transceivers designed specifically for PROFIBUS applications. It shares core functionality with the DFN-8 variant but utilizes the MSOP-8 form factor. The 'H' designation specifies the extended industrial temperature range, distinguishing it from commercial or automotive grades within the same series.

Drivers, Receivers, Transceivers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing circuit designs before considering alternative manufacturers, as PROFIBUS compliance testing results may vary between different transceiver implementations.

Drivers, Receivers, Transceivers FAQ

Does the LTC2876 support a separate logic supply voltage?

No, the LTC2876 uses the VCC supply for both the bus interface and logic levels. The separate VL pin is only present on the LTC2877 variant.

What is the maximum differential output voltage for PROFIBUS compliance?

The device must meet PROFIBUS requirements where the peak-to-peak differential voltage between A- and B-lines is between 4V and 7V under specific termination loads.

How does the device handle open or shorted bus conditions?

The receiver includes a failsafe feature that forces the RO output high if the inputs are open, shorted, or terminated without being driven for more than approximately 1.5µs.