LTC2850CDD#TRPBF

Drivers, Receivers, Transceivers Overview

The LTC2850CDD#TRPBF is a low-power, half-duplex RS-485/RS-422 transceiver manufactured by Analog Devices Inc. It operates on a single 3V to 3.6V supply and supports data rates up to 20Mbps. The device features one driver and one receiver housed in an 8-lead (3mm × 3mm) plastic DFN package with an exposed ground pad. Electrical specifications include a typical receive mode current of 370µA and a shutdown current of 5µA maximum for the C-grade. The receiver input resistance exceeds 96kΩ, supporting up to 256 nodes per bus. It includes thermal shutdown protection and ESD ratings of ±15kV HBM.

Drivers, Receivers, Transceivers Feature Summary

• High input impedance receiver design allows connection of up to 256 nodes on a single bus without exceeding standard unit load limits.
• Integrated failsafe mechanism ensures a logic-high output state when differential inputs are floating or shorted across the entire common-mode range.
• Driver outputs maintain high impedance during disabled states or power removal, preventing excessive power dissipation from bus contention.
• Enhanced electrostatic discharge protection withstands ±15kV human body model stress on interface pins without latch-up or damage.

Drivers, Receivers, Transceivers Applications

• Low power RS-485/RS-422 transceiver networks
• Level translator circuits
• Backplane transceiver interfaces

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix #TRPBF confirms tape and reel packaging rather than tube packaging. Confirm the temperature grade 'C' aligns with commercial operating requirements of 0°C to 70°C. Ensure the DFN-8 package footprint matches the PCB layout constraints. Cross-reference the manufacturer part number with official Analog Devices documentation to validate authenticity and revision status before procurement.

Drivers, Receivers, Transceivers Selection Notes

Select this component for applications requiring half-duplex communication with minimal static power consumption. The C-grade temperature range suits commercial environments. Verify that the 20Mbps data rate meets system timing requirements. Consider the 8-lead DFN package dimensions for space-constrained designs. Ensure the 3.3V supply voltage is stable within the specified 3V to 3.6V operational window for optimal performance.

Drivers, Receivers, Transceivers Part Context

This part belongs to the LTC2850/LTC2851/LTC2852 family of low-power transceivers. The LTC2850 specifically denotes the half-duplex variant with separate driver enable and receiver enable controls. Other family members include the full-duplex LTC2851 and LTC2852. The CDD suffix indicates the commercial temperature grade and 8-lead DFN package configuration.

Drivers, Receivers, Transceivers Replacement Considerations

LTC2850CDD#PBF: Same electrical specifications but supplied in tube packaging instead of tape and reel.

Drivers, Receivers, Transceivers FAQ

What is the receiver input resistance for the C-grade version?

The receiver input resistance is guaranteed to be greater than 96kΩ, representing a one-eighth unit load.

How does the device handle floating or shorted inputs?

The integrated failsafe feature guarantees a logic-high output state when the A and B inputs are floating or shorted.

What is the maximum ESD rating for the interface pins?

The transceiver can withstand up to ±15kV human body model (HBM) stress on the interface pins without latch-up or damage.