LTC2876HDD#PBF

Drivers, Receivers, Transceivers Overview

The LTC2876HDD#PBF is a PROFIBUS RS485 transceiver manufactured by Analog Devices Inc. It operates with a supply voltage range of 3V to 5.5V and supports data rates up to 20Mbps. The device features ±60V fault tolerance on bus pins and ±52kV ESD protection on interface pins. It includes a shutdown mode with typical supply current of 12µA and an operating temperature range from -40°C to +125°C. The component is housed in an 8-lead DFN package.

Drivers, Receivers, Transceivers Feature Summary

• Exceptional robustness tolerating ±60V faults on bus pins and ±52kV ESD protection on interface pins
• Extended ±25V input common mode range with full failsafe operation for noisy environments
• Fully balanced differential receiver thresholds with 240mV hysteresis for superior noise tolerance
• Supports all PROFIBUS data rates up to 12Mbps and meets IEC 61158-2 type 3 specifications

Drivers, Receivers, Transceivers Applications

• PROFIBUS-DP compliant networks
• Industrial communication systems
• RS485 and RS422 interfaces
• Harsh environment deployments requiring overvoltage protection

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix 'HDD' corresponds to the high-temperature grade (-40°C to +125°C) and the DFN-8 package configuration. Confirm lead-free finish compliance via RoHS documentation. Ensure the ordering part number matches the exact pinout and thermal pad requirements specified in the official datasheet before procurement.

Drivers, Receivers, Transceivers Selection Notes

Select this component when PROFIBUS compliance and extreme ruggedness are required. The LTC2876 lacks the separate logic supply pin found in the LTC2877, making it suitable for single-supply logic interfacing. Verify that the 20Mbps maximum baud rate aligns with system timing requirements and that the DFN-8 package fits the PCB layout constraints.

Drivers, Receivers, Transceivers Part Context

This component belongs to the LTC2876/LTC2877 family of rugged transceivers designed specifically for PROFIBUS applications. Unlike standard RS485 devices, these are tested against strict PROFIBUS termination and driver output voltage requirements. The H-grade variant ensures reliable operation across the extended industrial temperature range defined in the electrical characteristics table.

Drivers, Receivers, Transceivers Replacement Considerations

Public confirmed substitute part numbers: LTC2876IDD#PBF (industrial temp), LTC2876CMS8E#PBF (commercial temp MSOP).

Drivers, Receivers, Transceivers FAQ

Does the LTC2876 support a separate logic supply voltage?

No, the LTC2876 uses the VCC supply for both power and logic levels. The LTC2877 variant includes a separate VL pin for flexible digital interfacing.

What is the maximum short-circuit current capability?

The driver outputs can tolerate short circuits to any voltage within the -60V to +60V range, with a maximum short-circuit current of ±250mA.

How does the receiver handle open or terminated bus conditions?

The device provides full failsafe operation. If the receiver inputs are open, shorted, or terminated without being driven, the RO output will be forced high.