LTC2854IDD#TRPBF

Drivers, Receivers, Transceivers Overview

The LTC2854IDD#TRPBF is a low-power, half-duplex RS485/RS422 transceiver operating on a 3.3V supply. It features an integrated logic-selectable 120Ω termination resistor and supports up to 256 nodes per bus with one-eighth unit load input impedance. The device guarantees failsafe receiver operation over the entire common mode range of -7V to +12V. It provides enhanced ESD protection of ±25kV (HBM) on interface pins without latchup or damage. The component operates within a temperature range of -40°C to 85°C and is housed in a 10-lead 3mm × 3mm DFN package.

Drivers, Receivers, Transceivers Feature Summary

• Integrated switchable 120Ω termination resistor controlled by logic input
• High input impedance supporting up to 256 nodes per bus
• Guaranteed failsafe receiver output state under floating or shorted inputs
• Enhanced ESD protection withstands ±25kV human body model

Drivers, Receivers, Transceivers Applications

• Low power RS485/RS422 transceivers
• Level translator applications
• Backplane transceivers

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix #TRPBF indicates tape and reel packaging when sourcing this component. Confirm the IDD suffix corresponds to the industrial temperature grade of -40°C to 85°C. Ensure the manufacturer designation matches Analog Devices Inc. for the specified part number.

Drivers, Receivers, Transceivers Selection Notes

Select this component for designs requiring integrated line termination to simplify network configuration. The half-duplex topology suits bidirectional communication needs. Verify that the 3.3V supply voltage aligns with system requirements and that the 10-pin DFN package fits the available PCB footprint constraints.

Drivers, Receivers, Transceivers Part Context

This part belongs to the LTC2854/LTC2855 family of 3.3V RS485/RS422 transceivers. The LTC2854 variant specifically offers half-duplex operation, whereas the LTC2855 provides full-duplex capability. Both share similar features like integrated termination and high node count support.

Drivers, Receivers, Transceivers Replacement Considerations

LTC2854CDD#TRPBF

Drivers, Receivers, Transceivers FAQ

What is the maximum data rate supported by the LTC2854?

The LTC2854 supports a maximum data rate of 20Mbps.

How does the failsafe feature operate?

The failsafe feature guarantees a high output state when the receiver inputs are floating, shorted, or terminated but not driven, across the entire common mode range.

What is the typical input resistance of the receiver?

The receiver input resistance is greater than 96kΩ for C- and I-Grade parts, representing a one-eighth unit load.