LTC2864HDD-1#PBF

Drivers, Receivers, Transceivers Overview

The LTC2864HDD-1#PBF is a full-duplex RS-485/RS-422 transceiver in a 10-lead DFN package. It operates on a 3V to 5.5V supply with a maximum data rate of 20Mbps. The device features ±60V fault protection on transmission lines and an extended common mode range of ±25V. It includes ±15kV ESD protection on interface pins, guaranteed failsafe receiver operation, and thermal shutdown. The component supports up to 256 nodes due to high input impedance.

Drivers, Receivers, Transceivers Feature Summary

• Protected from overvoltage line faults to ±60V during all modes including power-down
• Extended common mode range of ±25V for reliable communication in noisy environments
• Enhanced ESD protection with ±15kV HBM rating on interface pins
• Guaranteed failsafe receiver operation ensuring logic 1 state when inputs are open or shorted

Drivers, Receivers, Transceivers Applications

• Supervisory Control and Data Acquisition (SCADA)
• Industrial control and instrumentation networks
• Automotive and transportation electronics
• Building automation, security systems, and HVAC
• Medical equipment

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix 'HDD' corresponds to the -40°C to +125°C temperature grade and the 10-lead DFN package configuration. Confirm that the '-1' designation indicates the full-duplex variant with enabled driver/receiver controls. Ensure compliance with RoHS standards as indicated by the '#PBF' marking before finalizing procurement orders.

Drivers, Receivers, Transceivers Selection Notes

Select this component for applications requiring robust fault tolerance against large ground loop voltages. It is suitable where standard RS-485 transceivers might fail due to overvoltage conditions. Consider the 20Mbps speed for high-throughput industrial links. Verify that the system ground isolation requirements align with the ±25V common mode specification.

Drivers, Receivers, Transceivers Part Context

This part belongs to the LTC286x family of ruggedized transceivers designed for harsh industrial environments. It shares pin compatibility with legacy parts like the LT1785 and LT1791, facilitating direct upgrades. The series distinguishes itself through integrated BiCMOS technology that provides inherent overvoltage protection without external components.

Drivers, Receivers, Transceivers Replacement Considerations

LT1785

Drivers, Receivers, Transceivers FAQ

Does the LTC2864HDD-1#PBF support half-duplex operation?

No, the '-1' suffix indicates a full-duplex device. Half-duplex variants are designated with a '-2' suffix.

What is the maximum voltage the A and B pins can withstand?

The interface pins are protected from overvoltage faults up to ±60V relative to ground.

How does the failsafe feature operate?

It guarantees the receiver output will be in a logic 1 state if the differential input voltage is less than 200mV, covering conditions where inputs are open, shorted, or terminated but not driven.