LTC2862CDD-2#TRPBF

Drivers, Receivers, Transceivers Overview

The LTC2862CDD-2#TRPBF is a half-duplex RS485/RS422 transceiver manufactured by Analog Devices Inc. It operates on a 3V to 5.5V supply voltage and supports data rates up to 20Mbps or low EMI 250kbps. The device features ±60V fault protection on interface pins, ±15kV ESD protection, and an extended common mode range of ±25V. Packaged in an 8-lead DFN (3mm x 3mm) with tape and reel delivery, it includes one driver and one receiver with guaranteed failsafe operation.

Drivers, Receivers, Transceivers Feature Summary

• Provides ±60V overvoltage fault protection on transmission lines during all operational modes including power-down.
• Features enhanced ESD protection rated at ±15kV HBM on interface pins and ±8kV on other pins.
• Supports high input impedance allowing connection of up to 256 nodes on the bus.
• Includes current-limited drivers and thermal shutdown for robust operation under overload conditions.

Drivers, Receivers, Transceivers Applications

• Supervisory Control and Data Acquisition (SCADA)
• Industrial control and instrumentation networks
• Automotive and transportation electronics

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix #TRPBF confirms tape and reel packaging rather than tube. Confirm the C grade indicates the commercial temperature range of 0°C to 70°C. Ensure the DD package designation matches the required 8-lead DFN footprint for PCB layout compatibility.

Drivers, Receivers, Transceivers Selection Notes

Select this model for applications requiring half-duplex communication with low electromagnetic interference due to the 250kbps slew-rate limited mode. Verify that the 3V to 5.5V supply range aligns with system power rails. Consider the DFN package for space-constrained designs requiring exposed pad grounding.

Drivers, Receivers, Transceivers Part Context

This component belongs to the LTC2862 series of fault-protected transceivers. It shares pinout compatibility with legacy parts like the LT1785 and LT1791. The -2 suffix specifically denotes the 250kbps low EMI variant within the half-duplex family.

Drivers, Receivers, Transceivers Replacement Considerations

LT1785 and LT1791 are pin-compatible alternatives. Other members of the LTC2862 family may serve as substitutes if duplex mode or data rate requirements differ.

Drivers, Receivers, Transceivers FAQ

Does the LTC2862CDD-2 support full-duplex operation?

No, the -2 suffix indicates a half-duplex configuration with one driver and one receiver sharing the A and B lines.

What is the maximum common mode voltage supported?

The device supports an extended common mode input range of ±25V.

Is the device protected against open ground faults?

Yes, the ±60V fault protection remains active even if the ground connection is open, though system designers should manage ground current flow through logic I/O pins.