LTC2854IDD#TR

Drivers, Receivers, Transceivers Overview

The LTC2854IDD#TR is a low-power, half-duplex RS-485/RS-422 transceiver operating on a 3.3V supply with a maximum data rate of 20Mbps. It features an integrated logic-selectable 120Ω termination resistor and supports up to 256 nodes per bus due to its one-eighth unit load receiver input resistance. The device includes failsafe circuitry guaranteeing a high output state during floating or shorted inputs. Enhanced ESD protection withstands ±25kV (HBM) without latchup. It 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 the TE pin
• High input impedance supporting up to 256 nodes on the bus
• Guaranteed failsafe receiver operation under open or shorted input conditions
• Robust ESD protection rated at ±25kV human body model

Drivers, Receivers, Transceivers Applications

• Level translator applications requiring RS-485/RS-422 compatibility
• Backplane communication systems utilizing differential signaling
• Industrial networks requiring high node density and bus termination control

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix #TR indicates tape and reel packaging configuration. Confirm the IDD suffix corresponds to the industrial temperature grade (-40°C to +85°C). Ensure the component matches the 10-lead DFN footprint requirements for your PCB layout. Cross-reference the manufacturer part number with official distributor catalogs to confirm availability and authenticity before procurement.

Drivers, Receivers, Transceivers Selection Notes

Select this component when a half-duplex interface with integrated termination is required. The 20Mbps data rate suits moderate-speed serial communications. Verify that the 3.3V supply voltage aligns with your system power rails. Consider the H-grade variant if operation above 85°C is necessary. Ensure the DFN package size fits within your available board space constraints.

Drivers, Receivers, Transceivers Part Context

This part belongs to the LTC2854/LTC2855 family of 3.3V RS-485/RS-422 transceivers. The LTC2854 is the half-duplex version, while the LTC2855 offers full-duplex operation. Both share similar electrical characteristics and package options. The family emphasizes low power consumption and integrated termination capabilities for simplified network design.

Drivers, Receivers, Transceivers Replacement Considerations

LTC2854CDD#TRPBF: Same function, commercial temperature grade (0°C to 70°C). LTC2854HDD#TRPBF: Same function, extended temperature grade (-40°C to 125°C). LTC2855IDD#TRPBF: Full-duplex variant with additional driver outputs Y and Z.