LTC2865IMSE#PBF

Drivers, Receivers, Transceivers Overview

The LTC2865IMSE#PBF is a full-duplex RS485/RS422 transceiver in a 12-lead MSOP package. It operates on a 3V to 5.5V supply and supports data rates up to 20Mbps or low EMI 250kbps via the SLO pin. The device features ±60V fault protection, an extended common mode range of ±25V, and ±15kV ESD protection on interface pins. It includes a dedicated 1.65V to 5.5V logic supply (VL) pin for flexible digital interfacing.

Drivers, Receivers, Transceivers Feature Summary

• Integrated ±60V overvoltage fault protection on transmission lines during all operational modes
• Logic-selectable slew rate limiting for reduced electromagnetic interference emissions
• Dedicated logic supply pin enabling independent voltage levels for digital interface control
• Guaranteed failsafe receiver operation with fully balanced differential thresholds

Drivers, Receivers, Transceivers Applications

• Supervisory Control and Data Acquisition (SCADA)
• Industrial Control and Instrumentation Networks
• Automotive and Transportation Electronics
• Building Automation, Security Systems and HVAC
• Medical Equipment

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific temperature grade suffix against project requirements. The IMSE designation indicates industrial operating limits. Confirm package compatibility with PCB footprints. Ensure power supply decoupling meets datasheet recommendations. Validate logic level compatibility between the VL pin and host microcontroller.

Drivers, Receivers, Transceivers Selection Notes

Select this component when high common mode voltages are present. Use the VL pin to isolate logic levels from the main supply. Choose the 250kbps mode if EMI reduction is critical. Verify that the ±25V common mode range exceeds system ground loop expectations. Consider thermal performance in enclosed industrial enclosures.

Drivers, Receivers, Transceivers Part Context

This part belongs to the LTC2862/LTC2863/LTC2864/LTC2865 family of fault-protected transceivers. It shares pinout compatibility with legacy parts like the LT1785 and LT1791. The IMSE variant specifically denotes the industrial temperature range within the MSOP package lineup.

Drivers, Receivers, Transceivers Replacement Considerations

LT1785

Drivers, Receivers, Transceivers FAQ

How does the SLO pin affect data transmission?

The SLO pin selects between high-speed 20Mbps operation and low EMI 250kbps slew-rate limited transmission.

What is the purpose of the VL pin?

The VL pin provides a separate logic supply input, allowing the digital interface threshold to operate independently of the VCC driver supply.

Does the device support failsafe operation?

Yes, it guarantees a logic high output state when inputs are floating, shorted, or terminated but undriven across the entire common mode range.