LTC2877CMSE#TRPBF

Drivers, Receivers, Transceivers Overview

The LTC2877CMSE#TRPBF is a PROFIBUS RS485 transceiver designed for IEC 61158-2 Type 3 compliance. It features a ±60V fault-tolerant bus interface and ±52kV ESD protection on line pins. The device supports data rates up to 20Mbps with a primary supply voltage range of 3.0V to 5.5V. A distinct logic supply pin (VL) allows flexible digital interfacing from 1.65V to VCC. It operates within an extended temperature range of –40°C to 125°C and utilizes a 10-lead MSOP package.

Drivers, Receivers, Transceivers Feature Summary

• PROFIBUS-DP compliant transceiver with full fail-safe receiver operation
• Robust ±60V bus fault tolerance and high ESD immunity
• Independent logic supply for low-voltage microcontroller interfacing
• High input resistance supporting extensive network node counts

Drivers, Receivers, Transceivers Applications

• PROFIBUS-DP master and slave nodes
• Industrial communication networks
• RS485 and RS422 systems
• Harsh environments requiring overvoltage protection

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix TRPBF indicates tape and reel packaging when sourcing this component. Confirm the 'H' designation in the base part number corresponds to the industrial temperature range requirements for your deployment environment. Ensure the MSOP-10 footprint matches your PCB layout constraints before finalizing procurement orders.

Drivers, Receivers, Transceivers Selection Notes

Select the LTC2877 variant specifically when a separate logic supply voltage is required to interface with 1.8V or 3.3V logic levels while maintaining a higher bus supply voltage. This distinguishes it from the LTC2876, which shares the logic and power supply rails. Verify that the 10-lead MSOP package fits the available board space compared to the DFN alternative.

Drivers, Receivers, Transceivers Part Context

This component belongs to the LTC2876/LTC2877 family of rugged PROFIBUS transceivers manufactured by Analog Devices. The series is engineered to meet strict industrial communication standards while providing enhanced durability against electrical faults. The LTC2877 differentiates itself through its dedicated logic supply architecture.

Drivers, Receivers, Transceivers Replacement Considerations

LTC2876CMSE#TRPBF serves as a direct functional substitute if the system design does not require a separate logic supply voltage. Both devices share identical bus characteristics and pinouts except for the VL pin configuration.

Drivers, Receivers, Transceivers FAQ

What is the maximum differential output voltage specified for PROFIBUS compliance?

The differential voltage between the A and B lines must be maintained between a minimum of 4V and a maximum of 7V peak-to-peak under PROFIBUS load conditions.

How does the input resistance affect network capacity?

The receiver input resistance is significantly higher than standard RS485 loads, allowing up to 200 receivers per contiguous network instead of the typical limit of 32.

What is the purpose of the VL pin on the LTC2877?

The VL pin provides an independent logic supply ranging from 1.65V to VCC, enabling flexible interfacing with various microcontroller logic levels without affecting the main bus supply.