Overview

Features and Benefits

  • 5.7 kV rms isolated RS-485/RS-422 transceiver
  • Low radiated emissions, integrated, isolated dc-to-dc converter
  • Passes EN 55032 Class B with margin on a 2-layer PCB
  • Cable invert smart feature
    • Correct reversed cable connection on A, B, Y, and Z bus pins while maintaining full receiver fail-safe feature
  • ESD protection on RS-485 A, B, Y, and Z pins
    • ≥±12 kV IEC61000-4-2 contact discharge
    • ≥±15 kV IEC61000-4-2 air discharge
  • High speed 25 Mbps data rate (ADM2865E/ADM2867E)
  • Low speed 500 kbps data rate for EMI control (ADM2861E/ADM2863E)
  • Flexible power supplies
    • Input VCC supply of 3 V to 5.5 V
    • Logic VIO supply of 1.7 V to 5.5 V
    • VSEL pin to select VISO supply of 5 V (VCC > 4.5 V) or 3.3 V
  • PROFIBUS compliant for 5 V VISO
  • Wide operating temperature range: −40°C to +105°C
  • High common-mode transient immunity: 250 kV/μs
  • Short-circuit, open-circuit, and floating input receiver fail-safe
  • Supports 192 bus nodes (72 kΩ receiver input impedance)
  • Full hot swap support (glitch free power-up/power-down)
  • Safety and regulatory approvals (pending)
  • CSA Component Acceptance Notice 5A, DIN V VDE V 0884-11, UL 1577, CQC11-471543-2012, IEC 61010-1
  • Complies with ANSI/TIA/EIA-485-A-98 and ISO 8482:1987(E)
  • 28-lead, fine pitch SOIC_W package (10.15 mm × 10.05 mm) with >8.0 mm creepage and clearance

Product Details

The ADM2861E, ADM2863E, ADM2865E, and ADM2867E are 5.7 kV rms signal and power isolated RS-485 transceivers. These devices are designed for balanced transmission lines and comply with ANSI/TIA/EIA-485-A-98 and ISO 8482:1987(E). The devices pass radiated emissions testing to the EN 55032 Class B standard with margin on a 2-layer printed circuit board (PCB) using two small external 0402 ferrites on isolated power and ground pins. The device features an integrated, low electromagnetic interference (EMI), isolated dc-to-dc converter, which eliminates the need for an external isolated power supply. The isolation barrier provides immunity to system level electromagnetic compatibility (EMC) standards. The family of isolator devices features ±12 kV contact and ±15 kV air IEC61000-4-2 ESD protection on the RS-485 A, B, Y, and Z pins. The devices also features cable invert pins, allowing the user to quickly correct reversed cable connection on the A, B, Y, and Z bus pins while maintaining full receiver fail-safe performance.

Slew rate limited versions are available, which are optimized for low speed over long cable runs, and have a maximum data rate of 500 kbps. Half duplex and full duplex variants are available. The full duplex generics allow independent cable inversion of the driver and receiver for additional flexibility.

Applications

  • Heating, ventilation, and air conditioning (HVAC) networks
  • Industrial field buses
  • Building automation
  • Utility networks
  • Energy meters

Product Lifecycle icon-recommended Recommended for New Designs

This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.

Evaluation Kits (1)

Tools & Simulations

IBIS Models

Product Recommendations

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Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

Support & Discussions

ADM2867E Discussions

RE: LTM2882 communication issue
4 week(s) ago in Linux Software Drivers
RE: ADM2867E Radiation
11 week(s) ago in Interface and Isolation

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The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


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Evaluation Boards Pricing displayed is based on 1-piece.
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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.