LTC2856CMS8-1#TRPBF

Drivers, Receivers, Transceivers Overview

The Analog Devices LTC2856CMS8-1#TRPBF is a low-power, half-duplex RS-485/RS-422 transceiver operating on a 5V supply. It supports a maximum data rate of 20Mbps and features enhanced ESD protection capable of withstanding ±15kV (HBM) without latchup or damage. The device incorporates a one-eighth unit load receiver input impedance, allowing up to 256 nodes per bus for C and I grades. Key electrical parameters include a supply voltage range of 4.5V to 5.5V, a maximum shutdown current of 5µA, and a typical receive mode current of 900µA. It includes thermal shutdown and current limiting for fault protection.

Drivers, Receivers, Transceivers Feature Summary

• Enhanced electrostatic discharge protection withstands ±15kV human body model stress without latchup or damage.
• High input impedance receiver supports up to 256 nodes per bus while maintaining failsafe operation over the entire common mode range.
• Driver outputs maintain high impedance when disabled or unpowered, preventing excessive power dissipation during bus contention.
• Integrated thermal shutdown and current limiting protect against excessive power dissipation caused by faults.

Drivers, Receivers, Transceivers Applications

• Low power RS-485/RS-422 transceivers
• Level translators
• Backplane transceivers

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix #TRPBF confirms tape and reel packaging rather than tube. Confirm the temperature grade 'C' aligns with commercial requirements of 0°C to 70°C. Ensure the MSOP-8 package matches the design footprint. Cross-reference the datasheet revision to confirm pinout consistency before finalizing procurement orders.

Drivers, Receivers, Transceivers Selection Notes

Select this component for applications requiring half-duplex communication at speeds up to 20Mbps. The 5V supply requirement distinguishes it from 3.3V variants. Consider the C-grade temperature range for standard environments. Verify that the 256-node capacity meets system scaling needs. Evaluate the low shutdown current for battery-powered designs requiring extended standby times.

Drivers, Receivers, Transceivers Part Context

This part belongs to the LTC2856 family of low-power RS-485/RS-422 transceivers. It is distinguished as the half-duplex variant with enables, unlike the full-duplex LTC2857 or LTC2858 series. The CMS8 designation indicates an 8-lead MSOP package with commercial temperature grading. It shares core protection features with the broader LTC285x family.

Drivers, Receivers, Transceivers Replacement Considerations

LTC2856CMS8-1#PBF offers identical electrical specifications but utilizes tube packaging instead of tape and reel. Other family members like LTC2857 provide full-duplex operation. Slew-rate limited versions such as LTC2856-2 offer reduced EMI at lower data rates.