LTC2855CGN#PBF

Drivers, Receivers, Transceivers Overview

The LTC2855CGN#PBF is a low-power, full-duplex RS485/RS422 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 enhanced ESD protection rated at ±15kV on interface pins, current-limited drivers, and thermal shutdown. It operates within a temperature range of 0°C to 70°C and is housed in a 16-lead narrow SSOP package.

Drivers, Receivers, Transceivers Feature Summary

• Integrated switchable 120Ω termination resistor controlled by the TE pin
• Full-duplex operation with separate driver and receiver channels
• Guaranteed failsafe receiver output under floating or shorted input conditions
• High input impedance supporting up to 256 nodes on the bus

Drivers, Receivers, Transceivers Applications

• Supervisory Control and Data Acquisition (SCADA) systems
• Industrial control and instrumentation networks
• Building automation and security systems
• HVAC control applications

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix matches the required package type and lead finish. Confirm the temperature grade aligns with environmental requirements. Check for RoHS compliance status as indicated in official documentation. Ensure the component source is authorized to guarantee authenticity and traceability.

Drivers, Receivers, Transceivers Selection Notes

Select this model for full-duplex RS485/RS422 applications requiring integrated line termination. Choose the CGN variant when a 16-lead SSOP package is preferred over DFN options. Verify that the 0°C to 70°C commercial temperature range meets system specifications. Consider the H-grade if extended temperature operation is necessary.

Drivers, Receivers, Transceivers Part Context

This component belongs to the LTC2854/LTC2855 family of low-power transceivers. The LTC2855 specifically provides full-duplex communication, distinguishing it from the half-duplex LTC2854. Both share similar electrical characteristics, including low power consumption and integrated termination capabilities.

Drivers, Receivers, Transceivers Replacement Considerations

The LTC2854 is pin-compatible but offers half-duplex functionality instead of full-duplex. Other variants within the same series include different temperature grades such as I-Grade and H-Grade.