LTC2856IDD-2#TRPBF

Drivers, Receivers, Transceivers Overview

The LTC2856IDD-2#TRPBF is a low-power, half-duplex RS485/RS422 transceiver manufactured by Analog Devices Inc. It operates on a single 5V supply with a maximum data rate of 250kbps to minimize electromagnetic interference. The device features a one-eighth unit load receiver input resistance exceeding 96kΩ, supporting up to 256 nodes per bus. It includes enhanced ESD protection rated at ±15kV (HBM), current-limited drivers, and thermal shutdown. The part is housed in an 8-lead 3mm × 3mm DFN package and supports an industrial temperature range from –40°C to 85°C.

Drivers, Receivers, Transceivers Feature Summary

• Slew-rate limited driver outputs for reduced high-frequency EMI emissions
• Guaranteed failsafe receiver operation ensuring logic-high output during floating or shorted inputs
• High input impedance allowing connection of up to 256 nodes on the bus
• Robust protection against excessive power dissipation via current limiting and thermal shutdown

Drivers, Receivers, Transceivers Applications

• Low EMI RS485/RS422 communication networks
• Level translation between different voltage domains
• Backplane transceiver interfaces
• Industrial control systems requiring high node density

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when sourcing. Confirm the IDD designation matches the required industrial temperature grade (-40°C to 85°C). Ensure compatibility with the target PCB footprint for the 8-lead DFN package. Cross-reference the manufacturer's latest documentation for any updates to the ordering information or lead-free status.

Drivers, Receivers, Transceivers Selection Notes

Select this component when low electromagnetic interference is critical, as the slew-rate limiting restricts the data rate to 250kbps. Choose this over the -1 variant if the application requires fewer than 256 nodes but demands strict EMI compliance. Verify that the half-duplex architecture aligns with the system's communication protocol requirements.

Drivers, Receivers, Transceivers Part Context

This part belongs to the LTC2856 family of rugged RS485/RS422 transceivers. It shares core features like ESD protection and failsafe operation with the higher-speed LTC2856-1 and full-duplex variants such as the LTC2857-2. The primary distinction is the reduced data rate optimized for noise-sensitive environments.

Drivers, Receivers, Transceivers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.