LTC2857CMS8-2#PBF

Drivers, Receivers, Transceivers Overview

The Analog Devices LTC2857CMS8-2#PBF is a low-power, full-duplex RS485/RS422 transceiver operating on a 5V supply. It supports maximum data rates of 20Mbps or 250kbps for low EMI applications. The receiver features a one-eighth unit load, supporting up to 256 nodes per bus (C, I-Grade), and includes a failsafe feature guaranteeing a high output state during floating or shorted inputs. Driver outputs maintain high impedance when disabled. Enhanced ESD protection withstands ±15kV HBM. Supply voltage ranges from 4.5V to 5.5V. Operating temperature spans 0°C to 70°C for the C-grade variant. It is housed in an 8-lead MSOP package.

Drivers, Receivers, Transceivers Feature Summary

• Full-duplex communication with independent driver and receiver channels
• Slew rate limiting capability for reduced electromagnetic interference emissions
• High input impedance receiver supporting extensive node counts on the bus
• Integrated thermal shutdown and current limiting for fault protection

Drivers, Receivers, Transceivers Applications

• Low power RS485/RS422 transceivers
• Level translator circuits
• Backplane transceiver systems

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix against official manufacturer documentation to confirm package type, temperature grade, and lead-free status. Ensure compatibility with system voltage requirements and interface standards before integration. Cross-reference part markings with datasheet specifications to validate authenticity and revision level.

Drivers, Receivers, Transceivers Selection Notes

Select this component for applications requiring full-duplex operation with robust fault protection. The slew-rate limited version is suitable for environments where EMI reduction is critical at lower data rates. Verify that the required node count exceeds standard limits, leveraging the high input impedance feature. Confirm thermal management needs align with the specified operating temperature range.

Drivers, Receivers, Transceivers Part Context

This device belongs to the LTC285x family of rugged RS485/RS422 transceivers designed for harsh industrial environments. It shares architectural similarities with half-duplex variants like the LTC2856 but provides simultaneous transmit and receive capabilities. The family emphasizes low power consumption and high noise immunity through integrated failsafe mechanisms and enhanced ESD protection ratings.

Drivers, Receivers, Transceivers Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.