LTC2854HDD#PBF

Drivers, Receivers, Transceivers Overview

The LTC2854HDD#PBF 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 input impedance. 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 +125°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 ensuring high output during idle conditions
• Enhanced ESD protection rated at ±25kV human body model

Drivers, Receivers, Transceivers Applications

• Industrial communication networks requiring robust fault protection
• Building automation systems utilizing RS-485/RS-422 protocols
• Backplane transceiver interfaces for high-speed data transmission

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific H-grade temperature rating (-40°C to +125°C) matches the application requirements. Confirm the half-duplex configuration aligns with system design needs. Ensure the 10-lead DFN footprint is compatible with the PCB layout. Check for lead-free compliance if required by regulatory standards.

Drivers, Receivers, Transceivers Selection Notes

Select this component when a single-ended driver/receiver pair with integrated termination is required. Compare against full-duplex variants like the LTC2855 if simultaneous bidirectional communication is necessary. Consider the thermal performance of the DFN package for high-temperature environments exceeding 85°C.

Drivers, Receivers, Transceivers Part Context

This part belongs to the LTC2854/LTC2855 family of 3.3V transceivers. It differs from the LTC2855 by offering half-duplex operation instead of full-duplex. The 'H' suffix denotes the extended industrial temperature range up to 125°C, while the 'DD' suffix specifies the 10-lead DFN package format.

Drivers, Receivers, Transceivers Replacement Considerations

LTC2854IDD#PBF offers identical functionality but with a restricted operating temperature range of -40°C to +85°C.