LTC2858IMS-2#PBF

Drivers, Receivers, Transceivers Overview

The LTC2858IMS-2#PBF is a low-power, full-duplex RS485/RS422 transceiver manufactured by Analog Devices Inc. It operates on a single 5V supply and supports a maximum data rate of 250kbps with slew-rate limiting to minimize electromagnetic interference (EMI). The device features a one-eighth unit load receiver input impedance, enabling the connection of up to 256 nodes per bus in C and I-grade configurations. It includes enhanced ESD protection rated at ±15kV HBM, current-limited drivers, and thermal shutdown capabilities. The component is housed in a 10-lead MSOP package.

Drivers, Receivers, Transceivers Feature Summary

• Slew-rate limited driver outputs for reduced high-frequency EMI emissions
• High input impedance supporting up to 256 nodes on a single bus
• Guaranteed failsafe receiver operation ensuring logic-high output during floating or shorted inputs
• Enhanced ESD protection withstands ±15kV human body model without latchup

Drivers, Receivers, Transceivers Applications

• Low EMI industrial communication networks
• Backplane transceivers requiring controlled signal rise times
• Level translation interfaces in noisy environments
• Multi-drop RS485/RS422 bus systems

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix #PBF indicates lead-free packaging compliance when sourcing. Confirm the IMS designation corresponds to the MSOP-10 package variant required for your PCB layout. Ensure the -2 suffix is selected specifically for applications necessitating the 250kbps slew-rate limited mode rather than the higher speed variants.

Drivers, Receivers, Transceivers Selection Notes

Select this part over the -1 variant when EMI reduction is critical, as it limits the data rate to 250kbps. Verify that the system requires full-duplex capability with independent transmit and receive paths. Consider the H-grade version if operation above 85°C is necessary, as the I-grade is limited to that temperature range.

Drivers, Receivers, Transceivers Part Context

This component belongs to the LTC285x family of low-power transceivers designed for robust serial communication. It shares architectural similarities with the LTC2856 and LTC2857 series but is distinct in its full-duplex configuration with enable pins and its specific slew-rate limited performance profile.

Drivers, Receivers, Transceivers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.