LTC2855HDE#TRPBF

Drivers, Receivers, Transceivers Overview

The LTC2855HDE#TRPBF is a full-duplex RS-422/RS-485 transceiver manufactured by Analog Devices. It operates on a single 3.3V supply and supports data rates up to 20Mbps. The device features an integrated, logic-selectable 120Ω termination resistor between the A and B pins. It provides enhanced ESD protection of ±15kV (Human Body Model) on interface pins without latchup. The receiver input impedance represents one-eighth unit load, supporting up to 256 nodes per bus for C- and I-grade parts. It includes current-limited drivers, thermal shutdown, and guaranteed failsafe operation.

Drivers, Receivers, Transceivers Feature Summary

• Integrated switchable 120Ω termination resistor controlled via the TE pin
• Full-duplex architecture with separate driver and receiver channels
• High input impedance allowing connection of up to 256 nodes on the bus
• Robust ESD protection rated at ±15kV on transceiver interface pins

Drivers, Receivers, Transceivers Applications

• Level translation in industrial communication networks
• Backplane transceivers requiring low power consumption
• Multi-drop RS-485 bus systems needing integrated line termination

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific H-grade temperature rating (-40°C to +125°C) matches the application environment. Confirm the DFN-12 package dimensions align with the PCB footprint. Ensure the tape and reel packaging specifications meet automated assembly requirements. Cross-reference the datasheet revision to confirm electrical characteristics remain consistent with design calculations.

Drivers, Receivers, Transceivers Selection Notes

Select this component when full-duplex communication is required alongside integrated bus termination. Compare against the half-duplex LTC2854 if only two-wire bus topology is needed. Consider the H-grade variant specifically for high-temperature environments exceeding standard industrial limits. Evaluate the 3.3V supply constraint against available system voltage rails.

Drivers, Receivers, Transceivers Part Context

This part belongs to the LTC2854/LTC2855 family of low-power RS-485/RS-422 transceivers. It shares core functionality with the LTC2854 but differs in providing full-duplex capability rather than half-duplex. The DE suffix indicates the 12-lead DFN package, while the H suffix denotes the extended high-temperature operating range.

Drivers, Receivers, Transceivers Replacement Considerations

LTC2855IDE#TRPBF offers the same full-duplex functionality with an industrial temperature range (-40°C to 85°C). LTC2855CDE#TRPBF provides commercial grade operation (0°C to 70°C). For half-duplex applications, the LTC2854 series serves as a functional alternative.