LTC2856HDD-2#PBF

Drivers, Receivers, Transceivers Overview

The Analog Devices LTC2856HDD-2#PBF is a low-power, half-duplex RS485/RS422 transceiver housed in an 8-lead plastic DFN (3mm × 3mm) package. It supports a maximum data rate of 0.25 Mbps with slew-rate limiting to minimize electromagnetic interference. The device operates on a single 5V supply within a voltage range of 4.5V to 5.5V. It features enhanced ESD protection capable of withstanding ±15kV human body model discharges without latch-up or damage. The receiver input impedance exceeds 96kΩ, representing a one-eighth unit load that supports up to 256 nodes per bus. Integrated thermal shutdown and current-limited drivers protect against excessive power dissipation during bus contention.

Drivers, Receivers, Transceivers Feature Summary

• Slew-rate limited driver outputs for controlled EMI emissions
• High input impedance supporting extensive node counts
• Robust ESD protection on interface pins
• Integrated thermal shutdown and output current limiting

Drivers, Receivers, Transceivers Applications

• Low EMI industrial communication networks
• Multipoint RS485 bus systems
• Backplane transceiver interfaces
• Level translation applications

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffixes against official documentation to confirm package type and temperature grade. Ensure compatibility with system voltage requirements and signal integrity standards before integration. Cross-reference part markings with manufacturer records to validate authenticity and traceability.

Drivers, Receivers, Transceivers Selection Notes

Select this component when minimizing electromagnetic interference is critical for compliance. The slew-rate limited mode restricts data rates to 250kbps, making it suitable for slower, noise-sensitive environments. Verify that the half-duplex architecture aligns with the required communication protocol and bus topology constraints.

Drivers, Receivers, Transceivers Part Context

This device belongs to the LTC285x family of rugged RS485/RS422 transceivers designed for harsh electrical environments. It shares core architectural features with the LTC2857 and LTC2858 series but is distinguished by its half-duplex configuration and specific speed limitations intended for low-EMI performance.

Drivers, Receivers, Transceivers Replacement Considerations

Direct functional substitutes include other slew-rate limited RS485 transceivers from Analog Devices such as the LTC2856CDD-2#PBF or LTC2856MS8-2#PBF, which offer identical electrical characteristics in alternative package formats.