LTC2851IS8#TRPBF

Drivers, Receivers, Transceivers Overview

The LTC2851IS8#TRPBF is a full-duplex RS-485/RS-422 transceiver operating on a 3V to 3.6V supply with a maximum data rate of 20Mbps. It features one-eighth unit load receiver input impedance, supporting up to 256 nodes per bus. The device includes guaranteed failsafe operation for floating or shorted inputs and enhanced ESD protection rated at ±15kV HBM. Typical supply current in receive mode is 370µA, while transmit mode draws 450µA. It operates within an industrial temperature range of –40°C to +85°C and is housed in an 8-lead MSOP package.

Drivers, Receivers, Transceivers Feature Summary

• Full-duplex communication capability without dedicated enable pins
• High input impedance receiver supports extensive multinode networks
• Integrated thermal shutdown and current limiting for fault protection

Drivers, Receivers, Transceivers Applications

• Industrial automation control systems
• Building automation and HVAC networks
• Multidrop serial communication buses

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix TRPBF indicates tape and reel packaging configuration. Confirm the IS8 designation corresponds to the Industrial temperature grade and MSOP-8 package variant. Ensure compatibility with standard RS-485/RS-422 electrical requirements before integration.

Drivers, Receivers, Transceivers Selection Notes

Select this component when full-duplex operation is required alongside low power consumption. The high input impedance allows for larger network topologies compared to standard unit load devices. Verify that the 20Mbps speed meets system timing requirements and that the 3.3V logic levels are compatible with the host controller.

Drivers, Receivers, Transceivers Part Context

This part belongs to the LTC285x family of low-power transceivers designed for harsh industrial environments. It complements half-duplex variants like the LTC2850 by providing simultaneous transmit and receive paths. The series emphasizes robustness through high ESD ratings and comprehensive fault protection mechanisms.

Drivers, Receivers, Transceivers Replacement Considerations

LTC2851IS8#PBF (Tube Packaging)

Drivers, Receivers, Transceivers FAQ

How does the receiver handle unpowered states?

The receiver maintains high input impedance greater than 96kΩ whether powered or unpowered, ensuring it does not load the bus.

What is the failsafe behavior during idle conditions?

The device guarantees a logic-high output state if the A and B inputs are shorted together or left floating.