LTC2851MPDD#PBF

Drivers, Receivers, Transceivers Overview

The LTC2851MPDD#PBF is a full-duplex RS-485/RS-422 transceiver operating on a 3.3V supply with a maximum data rate of 20Mbps. It features enhanced ESD protection up to ±15kV (HBM) and supports up to 256 nodes per bus due to its one-eighth unit load receiver input impedance. The device includes current-limited drivers, thermal shutdown, and guaranteed failsafe operation over the entire common mode range. It operates within a military temperature range of -55°C to +125°C and is housed in an 8-lead plastic DFN package.

Drivers, Receivers, Transceivers Feature Summary

• Full-duplex communication capability without separate enable pins
• Military-grade temperature range from -55°C to +125°C
• High input impedance supporting up to 256 nodes on the bus
• Integrated thermal shutdown and current limiting for fault protection

Drivers, Receivers, Transceivers Applications

• Low power RS-485/RS-422 transceivers
• Level translator circuits
• Backplane transceiver applications

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific MP suffix indicates the military temperature grade (-55°C to +125°C) as defined in the Analog Devices selection guide. Confirm the DD suffix corresponds to the 8-lead plastic DFN package. Ensure the PBF designation confirms lead-free compliance. Cross-reference the datasheet revision to validate all electrical parameters against the latest official documentation.

Drivers, Receivers, Transceivers Selection Notes

Select this component when full-duplex operation is required alongside extreme temperature resilience. The high input impedance allows for extensive network topologies exceeding standard node limits. Consider the exposed pad requirement for proper grounding and thermal management in the DFN package layout. Verify that the 20Mbps data rate aligns with system timing requirements.

Drivers, Receivers, Transceivers Part Context

This part belongs to the LTC285x family, which includes half-duplex (LTC2850) and full-duplex variants. The MP suffix specifically denotes the military temperature extension compared to commercial or industrial grades. It shares core architectural features with the LTC2851 but differs in environmental qualification and packaging options available across the series.

Drivers, Receivers, Transceivers Replacement Considerations

Public confirmed substitute part numbers: None.