LTC2856IDD-2#PBF

Drivers, Receivers, Transceivers Overview

The LTC2856IDD-2#PBF is a low-power, half-duplex RS-485/RS-422 transceiver manufactured by Analog Devices Inc. It operates on a single 4.5V to 5.5V supply and supports a maximum data rate of 250kbps with slew-rate limiting for low EMI emissions. The device features a one-eighth unit load receiver input resistance exceeding 96kΩ, enabling support for up to 256 nodes per bus. It includes enhanced ESD protection rated at ±15kV HBM, current-limited drivers, thermal shutdown, and guaranteed failsafe operation ensuring a high output state during floating or shorted input conditions.

Drivers, Receivers, Transceivers Feature Summary

• Slew-rate limited driver outputs minimize high-frequency EMI emissions
• High input impedance receiver supports up to 256 nodes on the bus
• Enhanced ESD protection withstands ±15kV human body model without latchup
• Guaranteed failsafe receiver operation ensures logic-high output during idle faults

Drivers, Receivers, Transceivers Applications

• Low EMI industrial communication networks
• Multi-drop RS-485 sensor buses
• Backplane transceiver interfaces
• Level translation between logic domains

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix IDD-2 against official Analog Devices documentation to confirm the package type, temperature grade, and speed variant. Ensure compatibility with system voltage requirements and interface standards before integration.

Drivers, Receivers, Transceivers Selection Notes

Select this component when low electromagnetic interference is critical due to its slew-rate limited output characteristics. It is suitable for applications requiring high node density on the bus line and robust protection against electrostatic discharge events in industrial environments.

Drivers, Receivers, Transceivers Part Context

This part belongs to the LTC2856 family of low-power RS-485/RS-422 transceivers. It is distinguished from the LTC2856-1 by its reduced 250kbps data rate and slew-rate limiting feature, which prioritizes signal integrity and EMI reduction over maximum throughput.

Drivers, Receivers, Transceivers Replacement Considerations

Direct substitutes within the same family include the LTC2856ID-2#PBF (DFN package) or LTC2856MS-2#PBF (MSOP package). Verify that alternative packages maintain the required thermal performance and pinout compatibility.