LTC2855IGN#TRPBF

Drivers, Receivers, Transceivers Overview

The LTC2855IGN#TRPBF is a full-duplex RS485/RS422 transceiver operating on a 3.3V supply with a maximum data rate of 20Mbps. It features an integrated logic-selectable 120Ω termination resistor and supports up to 256 nodes per bus due to its one-eighth unit load input impedance. The device provides ±15kV HBM ESD protection on interface pins, guaranteed failsafe receiver operation, and current-limited drivers with thermal shutdown. It operates within a temperature range of –40°C to +85°C and is housed in a 16-lead SSOP package.

Drivers, Receivers, Transceivers Feature Summary

• Integrated switchable 120Ω termination resistor for optimized signal fidelity
• Full-duplex architecture with independent driver and receiver channels
• High input impedance supporting up to 256 nodes on the bus
• Guaranteed failsafe receiver output under floating or shorted input conditions

Drivers, Receivers, Transceivers Applications

• Supervisory Control and Data Acquisition (SCADA) systems
• Industrial control and instrumentation networks
• Building automation and security systems
• HVAC control interfaces

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific orderable part number against the manufacturer's official documentation to ensure correct grade and packaging. Confirm that the 16-lead SSOP package matches the target PCB footprint requirements. Check for any recent product change notifications regarding pinout or electrical specifications before finalizing procurement.

Drivers, Receivers, Transceivers Selection Notes

Select this component when a full-duplex RS485/RS422 interface is required alongside integrated line termination to reduce external component count. Ensure the application voltage aligns with the specified 3.0V to 3.6V supply range. Consider the thermal performance of the SSOP package if high ambient temperatures or continuous fault conditions are expected.

Drivers, Receivers, Transceivers Part Context

This component belongs to the LTC2854/LTC2855 family of low-power transceivers. While the LTC2854 offers half-duplex communication, the LTC2855 provides full-duplex capability with separate transmit and receive lines. Both share similar power management features and protection mechanisms but differ in channel configuration.

Drivers, Receivers, Transceivers Replacement Considerations

The datasheet notes pin compatibility with the LTC2862 and LT1785. Verify functional equivalence regarding duplex mode and termination integration before substitution.