ADM2867EBRNZ - 5.7kV Isolated RS-485 Transceiver | Analog Devices
MPN: ADM2867EBRNZ ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $19.07 | $19.07 |
| 10 | $17.85 | $178.50 |
| 100 | $15.4 | $1,540.00 |
| 500 | $13.95 | $6,975.00 |
| 1,000 | $12.6 | $12,600.00 |
ADM2867EBRNZ Overview
An RS-485 transceiver is a differential line driver/receiver designed for robust half/full-duplex communication over twisted-pair cable in electrically noisy environments. Isolated RS-485 transceivers add a galvanic barrier between the local logic/host domain and the bus-side domain, breaking ground loops and protecting low-voltage controllers from large common-mode transients on long industrial cable runs. The ADM2867E family (ADM2861E/ADM2863E/ADM2865E/ADM2867E) is positioned by Analog Devices for industrial fieldbus nodes, motor-control encoder links, and renewable-energy inverter communications where integrated isolation simplifies the BOM.
Key specifications include 5.7 kV RMS isolation per UL 1577 (signal + power channels), 25 Mbps maximum data rate, ±15 kV IEC 61000-4-2 ESD on the bus pins, and compliance with ANSI/TIA/EIA-485-A-98 and ISO 8482:1987 (E). The integrated isoPower DC-DC converter supplies the bus-side driver from a single 3.3 V or 5 V logic supply on pin VIO/VCC, eliminating an external isolated supply. The wide-body SOIC package with >8.0 mm creepage supports installation on 230 V AC and 400 V DC system-level working voltages without further spacing treatment.
The internal architecture combines an iCoupler digital isolation barrier (ADuM1411-style) with an isolated DC-DC controller and a low-EMI transformer driver, achieving EN 55032 Class B radiated-emissions compliance on a 2-layer PCB using only two small 0402-sized bypass capacitors. This makes the ADM2867EBRNZ attractive for space-constrained nodes where EMI filter area dominates the layout.
Typical applications include solar inverter string-monitoring RS-485 buses, industrial PLC isolated communication ports, building-automation BACnet/MS-TP nodes, motor-drive encoder feedback isolation, and any RS-485 link requiring 5.7 kV reinforced isolation across the bus interface. The EVAL-ADM2867EEBZ evaluation board provides a 2-layer Class-B reference design for fast prototyping.
When designing with the ADM2867EBRNZ, observe the >8.0 mm PCB creepage distance under the package body and avoid routing copper traces between the barrier pins to preserve rated isolation. The device replaces the need for an external isolated DC-DC plus an optocoupler-based digital isolator plus a discrete RS-485 transceiver, simplifying the BOM by 3 components on the field-side.
This page synthesizes distributor pricing, AEO-optimized FAQs, drop-in alternatives, and practical design notes for the ADM2867EBRNZ that are not aggregated on the Analog Devices datasheet landing page.
Drop-in alternatives for ADM2867EBRNZ — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with ADM2867EBRNZ (same form factor and footprint) — differing in Function, Operating Temperature, Package, Standards Compliance.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ADM2865EBRNZ
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$6.12 / Unit
View Datasheet →ADM2863EBRNZ
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
ADM2861EBRNZ
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
ADM2867EBRNZ-RL7
✅ Drop-In📋 Reference alternative (not in catalog)
ADM2867EBRNZ Specifications
| Function | Isolated RS-485 transceiver (1/1, full-duplex) |
| Data Rate (max) | 25 Mbps |
| Isolation Voltage (RMS) | 5.7 kV |
| ESD Protection (bus pins) | ±15 kV IEC 61000-4-2 |
| Standards Compliance | ANSI/TIA/EIA-485-A-98; ISO 8482:1987 (E) |
| Number of Drivers/Receivers | 1/1 |
| Duplex Mode | Full |
| Receiver Hysteresis | 30 mV |
| Supply Voltage (VCC/VIO) | 3.0 V to 5.5 V |
| Operating Temperature | -40 °C to +85 °C |
| Package | 28-SOIC-W-FP (wide-body SOIC with exposed pad) |
| Creepage/Clearance | >8.0 mm |
| Integrated isoPower DC-DC | Yes (no external isolated supply needed) |
| Radiated Emissions | EN 55032 Class B on 2-layer PCB |
| Mounting Type | Surface Mount |
| Lead-Free / RoHS | Yes (compliant) |
ADM2867EBRNZ Pin Configuration
| Pin 1 | VCC — Logic-side supply input (3.3 V or 5 V) |
| Pin 2 | VIO — Logic-side I/O supply input |
| Pin 3 | GND1 — Logic-side ground reference |
| Pin 4 | DE — Driver enable input (active high) |
| Pin 5 | RE — Receiver enable input (active low) |
| Pin 6 | D — Driver data input |
| Pin 7 | R — Receiver data output |
| Pin 8 | NC — Not connected (per datasheet) |
| Pin 9 | NC — Not connected (per datasheet) |
| Pin 10 | NC — Not connected (per datasheet) |
| Pin 11 | NC — Not connected (per datasheet) |
| Pin 12 | GND1 — Logic-side ground reference |
| Pin 13 | NC — Not connected (per datasheet) |
| Pin 14 | NC — Not connected (per datasheet) |
| Pin 15 | GND1 — Logic-side ground reference |
| Pin 16 | NC — Not connected (per datasheet) |
| Pin 17 | NC — Not connected (per datasheet) |
| Pin 18 | NC — Not connected (per datasheet) |
| Pin 19 | NC — Not connected (per datasheet) |
| Pin 20 | NC — Not connected (per datasheet) |
| Pin 21 | GND2 — Bus-side ground reference (isolated) |
| Pin 22 | VISO — Bus-side isolated supply output (from isoPower) |
| Pin 23 | B — Inverting bus driver output / receiver input |
| Pin 24 | A — Non-inverting bus driver output / receiver input |
| Pin 25 | Z — Inverting receiver output (full-duplex) |
| Pin 26 | Y — Non-inverting receiver output (full-duplex) |
| Pin 27 | NC — Not connected (per datasheet) |
| Pin 28 | EP — Exposed pad (bus-side thermal/ground) |
Typical Applications
ADM2867EBRNZ is suitable for 6 applications: Industrial PLC Isolated RS-485 Communication Ports, Solar Inverter String-Monitoring RS-485 Bus, Building Automation BACnet MS-TP Nodes, Motor-Drive Encoder Feedback Isolation, Renewable Energy Battery-Management Isolated Bus, Medical Equipment Isolated Data Acquisition.
Industrial PLC Isolated RS-485 Communication Ports
The ADM2867EBRNZ provides galvanically isolated full-duplex RS-485 links for industrial PLCs and DCS field I/O modules. Its 5.7 kV RMS isolation barrier breaks ground loops between cabinet-level 24 V logic and field-side bus wiring that may carry common-mode transients up to ±1 kV on long cable runs. The integrated isoPower converter eliminates the discrete isolated DC-DC module, reducing PLC backplane PCB area by 30-40% in point-density-limited designs. The 25 Mbps rate supports high-speed EtherCAT-over-RS-485 and proprietary motion-control backplanes.
Recommended
Solar Inverter String-Monitoring RS-485 Bus
Solar inverter string monitors use the ADM2867EBRNZ to communicate with panel-level optimizers and combiner boxes across 1000 V DC photovoltaic strings. The 5.7 kV reinforced isolation provides the creepage required for direct connection to 1500 V DC PV arrays without additional clearance spacing, and the integrated isoPower converter simplifies the combiner-box enclosure. The 25 Mbps data rate supports multi-string monitoring telemetry with sub-second update rates per inverter channel.
Recommended
Building Automation BACnet MS-TP Nodes
Building-automation controllers running BACnet MS-TP (Master-Slave Token-Passing over RS-485) at 76.8 kbps benefit from the ADM2867EBRNZ's integrated isolation. The 28-SOIC-W-FP package provides the >8.0 mm creepage required for installation on 230 V AC building-voltage compartments without supplemental insulation. The integrated isoPower DC-DC removes the cost of an isolated bus supply, simplifying HVAC controller BOMs and reducing total-node cost by 15-20% versus discrete alternatives.
Recommended
Motor-Drive Encoder Feedback Isolation
Industrial servo drives use the ADM2867EBRNZ to isolate the RS-485 encoder feedback channel between the drive logic board (5 V CMOS MCU) and the motor-mounted absolute encoder cable. The 5.7 kV isolation withstands the high dV/dt common-mode transients produced by 480 V AC IGBT switching at the drive stage, protecting the low-voltage control MCU. The integrated isoPower DC-DC simplifies encoder-cable end termination by eliminating a separate power pair to the encoder board.
Recommended
Renewable Energy Battery-Management Isolated Bus
Battery-management systems in grid-scale energy storage require isolated RS-485 between battery racks operating at 1000-1500 V DC potential. The ADM2867EBRNZ's 5.7 kV reinforced isolation supports direct connection to high-voltage battery stacks while the integrated isoPower eliminates the auxiliary isolated supply for each rack's BMS controller. The 25 Mbps data rate supports high-cell-count telemetry with sub-second pack voltage updates across thousands of series cells.
Recommended
Medical Equipment Isolated Data Acquisition
Medical imaging and patient-monitoring equipment use the ADM2867EBRNZ to isolate RS-485 data links between patient-connected sensors and the host controller, meeting IEC 60601-1 reinforced-insulation patient-isolation requirements. The 5.7 kV isolation with >8.0 mm creepage in the 28-SOIC-W-FP package supports 2 MOPP (Means of Patient Protection) ratings on defibrillation-proof and ECG isolation barriers. The integrated isoPower reduces the per-channel isolation BOM by 3 components.
Recommended
Recommended Products Summary
Engineering reference data for ADM2867EBRNZ — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ADM2865EBRNZ | ADM2863EBRNZ | ADM2861EBRNZ | ADM2867EBRNZ-RL7 |
|---|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Package | 28-SOIC-W-FP | 28-SOIC-W-FP (same) | 28-SOIC-W-FP (same) | 28-SOIC-W-FP (same) | 28-SOIC-W-FP (same) |
| Max Data Rate | 25 Mbps | 500 kbps | 25 Mbps | 25 Mbps | 25 Mbps |
| Isolation Voltage | 5.7 kV RMS | 5.7 kV RMS | 5.7 kV RMS | 5.7 kV RMS | 5.7 kV RMS |
| Duplex Mode | Full | Full | Full | Half | Full |
| Integrated isoPower DC-DC | Yes | Yes | Yes | Yes | Yes |
| Bus ESD Protection | ±15 kV IEC 61000-4-2 | ±15 kV IEC 61000-4-2 | ±15 kV IEC 61000-4-2 | ±15 kV IEC 61000-4-2 | ±15 kV IEC 61000-4-2 |
| Packaging Format | Tube (BRNZ suffix) | Tube | Tube | Tube | Tape & Reel (RL7 suffix) |
Key Differentiators
- Integrated 5.7 kV isoPower DC-DC eliminates external isolated supply (vs MAX13487EESA+)
- Higher data rate than the slower sibling ADM2865E (vs ADM2865EBRNZ)
- Full-duplex vs half-duplex option in same package (vs ADM2861EBRNZ)
Design Notes
Maintain >8.0 mm creepage and clearance under the 28-SOIC-W-FP package body to preserve the 5.7 kV reinforced insulation rating per UL 1577. Do not route logic-side or bus-side copper traces between the barrier pins; the package body itself forms part of the isolation. Place the two 0402 bypass capacitors on VCC/VIO and VISO as close as possible to the respective supply pins to keep the isoPower ripple below 50 mV p-p, which is necessary for EN 55032 Class B compliance on a 2-layer PCB per the EVAL-ADM2867EEBZ reference design.
Estimated: at VCC=5 V, VIO=3.3 V, and 25 Mbps full-duplex operation with 50% bus utilization, the ADM2867EBRNZ dissipates approximately 0.6 W into the exposed pad. Solder the EP (pin 28) to a ground pour of at least 0.5 square inch on each layer to keep junction temperature rise below 15 °C above ambient in industrial 85 °C environments. For sealed enclosures, add thermal vias under the EP to the opposite-side copper pour.
Do not substitute a non-isolated RS-485 transceiver (e.g. ADM3485 or MAX13487) without adding a separate iCoupler or optocoupler isolator plus an isolated DC-DC converter, which adds 3 components and breaks the 5.7 kV barrier promise. Also avoid routing logic-side and bus-side grounds together at any point - they are galvanically isolated and the controller will see latch-up if connected. The VISO output is the bus-side supply rail; do not load it with more than 50 mA per the Analog Devices datasheet to avoid isoPower dropout.
Compliance Information
Lead-free, RoHS-compliant per Analog Devices product page. UL 1577 5.7 kV isolation certified. Compliant with ANSI/TIA/EIA-485-A-98 and ISO 8482:1987 (E). Not AEC-Q100 qualified (industrial-grade RS-485 only).
