LTC2877IMSE#PBF

Drivers, Receivers, Transceivers Overview

The LTC2877IMSE#PBF is a rugged PROFIBUS and RS485 transceiver manufactured by Analog Devices Inc. It features a separate logic supply pin (VL) allowing flexible digital interfacing from 1.65V to 5.5V, while the primary power supply (VCC) operates between 3.0V and 5.5V. The device supports data rates up to 20Mbps with a maximum differential output voltage of 7V peak-to-peak under PROFIBUS loads. It tolerates bus faults up to ±60V and provides ±52kV ESD protection on interface pins. The component is housed in a 10-lead MSOP package with an exposed thermal pad.

Drivers, Receivers, Transceivers Feature Summary

• Separate logic supply pin for low-voltage microcontroller interfacing
• High robustness against overvoltage line faults and electrostatic discharge
• Full fail-safe operation with balanced receiver thresholds and hysteresis
• Supports high node counts due to reduced unit load input resistance

Drivers, Receivers, Transceivers Applications

• PROFIBUS-DP compliant industrial communication networks
• RS485 and RS422 multi-drop systems
• Harsh industrial environments requiring fault tolerance
• Low voltage differential signaling applications

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix #PBF indicates lead-free finish and RoHS compliance when sourcing. Confirm the IMSE designation corresponds to the industrial temperature range and MSOP-10 package type. Ensure the supplier provides official documentation matching the Analog Devices datasheet 28767fa to validate authenticity and revision status.

Drivers, Receivers, Transceivers Selection Notes

Select the LTC2877 over the LTC2876 if the system requires a dedicated logic supply pin (VL) to interface with 1.65V or 3.3V logic levels independently of the main bus supply. This separation allows for lower power consumption in logic interfaces while maintaining full 5V bus capability. Verify that the application benefits from the additional pin count for independent logic control.

Drivers, Receivers, Transceivers Part Context

This component belongs to the LTC2876/LTC2877 family of rugged transceivers designed specifically for PROFIBUS and RS485 standards. The series emphasizes durability in electrically noisy industrial settings, offering superior fault protection compared to standard transceivers. The family includes variants with different package options and temperature ranges to suit various deployment constraints.

Drivers, Receivers, Transceivers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.