LTC2865HDE#TRPBF

Drivers, Receivers, Transceivers Overview

The LTC2865HDE#TRPBF is a full-duplex RS-422/RS-485 transceiver manufactured by Analog Devices Inc. It operates on a primary supply voltage (VCC) of 3V to 5.5V and features a separate logic interface supply pin (VL) supporting 1.65V to 5.5V. The device supports maximum data rates of 20Mbps or low EMI 250kbps, selectable via the SLO pin. It provides ±60V fault protection on transmission lines and ±15kV ESD protection on interface pins. Packaged in a 12-lead DFN (DE) with an exposed pad, it operates within a temperature range of -40°C to +125°C.

Drivers, Receivers, Transceivers Feature Summary

• Features ±60V overvoltage fault protection on data transmission lines during all operational modes, including power-down.
• Includes a dedicated VL pin allowing flexible digital interface compatibility with logic supplies ranging from 1.65V to 5.5V.
• Provides extended common mode input range of ±25V and guaranteed failsafe receiver operation for reliable communication in noisy environments.
• Offers fully balanced differential receiver thresholds to minimize duty cycle distortion and enhance noise immunity.

Drivers, Receivers, Transceivers Applications

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

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix #TRPBF indicates tape and reel packaging when sourcing components. Confirm the H-grade designation corresponds to the -40°C to +125°C operating temperature range required for the application environment. Ensure the DE package footprint matches the PCB layout specifications provided in the official datasheet.

Drivers, Receivers, Transceivers Selection Notes

Select this component when a full-duplex RS-422/RS-485 interface is required with independent logic voltage levels. The VL pin allows interfacing with 1.8V or 2.5V logic controllers while maintaining 3.3V or 5V driver supplies. Choose this model over half-duplex variants if simultaneous bidirectional communication is necessary for the system architecture.

Drivers, Receivers, Transceivers Part Context

This part belongs to the LTC2862/LTC2863/LTC2864/LTC2865 family of ruggedized transceivers. While sharing core fault protection and ESD features, the LTC2865 is distinct as the only full-duplex variant in the series that includes a separate VL pin for logic level translation. Other family members like the LTC2862 are half-duplex and lack the VL pin.

Drivers, Receivers, Transceivers Replacement Considerations

The datasheet notes pin compatibility with LT1785 and LT1791 devices. Verify that these legacy parts meet the specific ±60V fault protection and ESD requirements before substitution. Cross-reference electrical characteristics to ensure signal integrity and timing parameters align with the current design constraints.