ADM2486BRWZ-RL7 - Isolated RS-485 Transceiver | Analog Devices
MPN: ADM2486BRWZ-RL7 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.85 | $4.85 |
| 10 | $4.35 | $43.50 |
| 100 | $3.9 | $390.00 |
| 500 | $3.2 | $1,600.00 |
| 1,000 | $2.5 | $2,500.00 |
Drop-in alternatives for ADM2486BRWZ-RL7 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ADM2483BRWZ
✅ Drop-In✓ In Stock
$3.75 / Unit
View Datasheet →ISO1176DWR
✅ Drop-In📋 Reference alternative (not in catalog)
ISO3082DWR
✅ Drop-In📋 Reference alternative (not in catalog)
IL3685
✅ Drop-In📋 Reference alternative (not in catalog)
ADM2486BRWZ-RL7 Maximum Ratings & Electrical Characteristics
| Technology | iCoupler® digital isolation |
| Type | RS-422/RS-485 transceiver, half-duplex |
| Isolation Channels | 3 |
| Isolation Voltage | 2500 Vrms |
| Data Rate | 20 Mbps |
| CMTI | 25 kV/µs |
| Duplex Mode | Half-duplex |
| VDD1 Supply | 3 V operation (VDD1) |
| Dual Supply Voltage (Typ) | 5 V / 3.3 V |
| Maximum Dual Supply Voltage | 5.5 V / 5.25 V |
| Protocol Compliance | PROFIBUS, ANSI EIA/TIA 485-A, ISO 8482:1987(E) |
| Package Type | 16-SOIC (0.295", 7.50mm Width) |
| Pin Count | 16 |
| Mounting Type | Surface Mount |
| Package Length | 10.5 mm (Max) |
| Package Width | 7.6 mm (Max) |
| Package Height | 2.35 mm (Max) |
| Temperature Grade | Industrial |
| Lead Shape | Gull-wing |
| Lead-Free / RoHS Status | Z suffix indicates Pb-free finishing (not independently verified) |
ADM2486BRWZ-RL7 2.35 mm (max) Pin Configuration Guide
Complete pinout information for ADM2486BRWZ-RL7 (2.35 mm (max) package) with 16 pins. This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for ADM2486BRWZ-RL7.
Refer to the datasheet for full pin configuration.
Estimated pin count: 16 pins (digital package)
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
ADM2486BRWZ-RL7 is suitable for 6 applications: PROFIBUS DP Fieldbus Networks, Industrial Automation and PLC I/O, Motor Drive and Inverter Communication, Building Automation and HVAC, Smart Grid and Energy Metering, SCADA and Remote Terminal Units.
PROFIBUS DP Fieldbus Networks
The ADM2486BRWZ-RL7 is well suited to PROFIBUS DP networks because it is explicitly PROFIBUS-compliant and operates at 20 Mbps, the maximum data rate used by PROFIBUS DP. Its 2500 Vrms galvanic isolation removes ground loops between fieldbus nodes and the controller, and 25 kV/µs CMTI preserves data integrity during transients. In a typical node, the transceiver connects the UART/PROFIBUS ASIC to the 485 bus; A and B outputs are terminated with 120 Ω at each cable end. The 3 V VDD1 logic supply allows direct interface to 3.3 V controllers without level shifting.
Recommended
Industrial Automation and PLC I/O
The ADM2486's 20 Mbps data rate and 2500 Vrms isolation make it an excellent physical-layer device for PLC backplanes, remote I/O, and fieldbus couplers. It supports half-duplex multipoint bus transmission lines, matching common RS-485 industrial topologies. In a PLC digital I/O module, the RL7 tape-and-reel package supports high-volume assembly, and 25 kV/µs CMTI rejects noise from adjacent contactors and motor starters. Designers should place the isolated side near the field connector and keep the isolation barrier free of copper to maintain rated creepage.
Recommended
Motor Drive and Inverter Communication
Variable-frequency drives using RS-485/PROFIBUS links benefit from ADM2486's low propagation and high CMTI, which prevents false bit errors caused by fast-rising common-mode voltages from the inverter switching. The 16-SOICW package is small enough for drive control boards, and 20 Mbps throughput supports fast parameter upload/download and cyclic PROFIdrive traffic. With VDD1 at 3 V, the device can connect directly to 3.3 V DSP/MCU UARTs, simplifying the BOM. For EMC-critical designs, the 2500 Vrms isolation rating provides a defined withstand voltage between the logic and bus side.
Recommended
Building Automation and HVAC
Building automation BACnet MS/TP and Modbus RTU segments typically run below 500 kbps, but deploy the ADM2486 when the bus also carries faster proprietary telegrams or when one part number is preferred across multiple product lines. The 3 V VDD1 supply and 16-SOICW footprint simplify controller board layout, while 2500 Vrms isolation prevents ground potential differences between HVAC controllers in different equipment rooms. CMTI of 25 kV/µs keeps communication stable in buildings with large inductive loads. For lower-cost, lower-speed segments, the ADM2483BRWZ is the recommended alternative.
Recommended
Smart Grid and Energy Metering
Electricity meters and concentrators use isolated RS-485 to communicate over long, noise-prone runs between meter and data collector. ADM2486's 20 Mbps data rate is higher than needed for meter reading, but it provides headroom for firmware upgrades over the bus; its 2500 Vrms isolation guards metering electronics from surges coupled into outdoor cabling. The 25 kV/µs CMTI limits bit errors when lightning-induced transients couple into the twisted pair. The RL7 tape-and-reel variant is suited to high-volume meter production. Pair with TVS protection on the bus lines for full transient hardening.
Recommended
SCADA and Remote Terminal Units
SCADA RTUs and substation controllers require reliable isolated RS-485 links to sensors and reclosers. ADM2486's 20 Mbps throughput allows collection of high-resolution waveforms, while 2500 Vrms isolation and 25 kV/µs CMTI reject ground shift and switching transients in utility environments. The half-duplex 2-wire bus topology minimizes cabling, and PROFIBUS compliance makes the part drop-in ready for industrial RTU protocols. In substation applications, designers should add 120 Ω termination and bias resistors according to bus length. The 16-SOICW package allows dense I/O cards; the RL7 tape-and-reel option streamlines assembly.
Recommended
Recommended Products Summary
Engineering reference data for ADM2486BRWZ-RL7 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ADM2483BRWZ | ISO1176DWR | ISO3082DWR | IL3685 |
|---|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Texas Instruments | Texas Instruments | NVE Corporation |
| Package | 16-SOIC (0.295", 7.50mm Width) | 16-SOIC (0.295", 7.50mm Width) | 16-SOIC (0.295", 7.50mm Width) | 16-SOIC (0.295", 7.50mm Width) | 16-SOIC (0.295", 7.50mm Width) |
| Isolation Voltage | 2500 Vrms | 2500 Vrms | 2500 Vrms | 2500 Vrms | [DATA_NEEDED: isolation voltage] |
| Data Rate | 20 Mbps | 500 kbps | 40 Mbps | 20 Mbps | 20 Mbps |
| CMTI | 25 kV/µs | 25 kV/µs | 25 kV/µs | [DATA_NEEDED: CMTI] | [DATA_NEEDED: CMTI] |
| Duplex Mode | Half-duplex | Half-duplex | Half-duplex | Half-duplex | Half-duplex |
| VDD1 Supply | 3 V operation (VDD1) | 3 V or 5 V | 3.3 V or 5 V | 5 V | [DATA_NEEDED: VDD1 supply range] |
| Protocol Compliance | PROFIBUS, ANSI EIA/TIA 485-A, ISO 8482:1987(E) | ANSI EIA/TIA 485-A, ISO 8482 | ANSI EIA/TIA 485-A | ANSI EIA/TIA 485-A | ANSI EIA/TIA 485-A |
| Temperature Grade | Industrial | Industrial | Industrial | Industrial | [DATA_NEEDED: temperature grade] |
Key Differentiators
- 20 Mbps data rate and PROFIBUS compliance (vs ADM2483BRWZ)
- 3 V VDD1 logic supply (vs ISO1176DWR)
- 25 kV/µs CMTI in a 16-SOICW package (vs IL3685)
Design Notes
Always terminate the RS-485 bus with 120 Ω resistors at both ends of the cable to prevent reflections at 20 Mbps. The ADM2486 does not integrate fail-safe biasing, so add pull-up and pull-down bias resistors on the A and B lines if the bus can float when all drivers are disabled. Without termination and biasing, high-speed PROFIBUS segments can experience bit errors and missed telegrams.
Maintain a clean isolation barrier under the iCoupler package by removing copper on all layers beneath the isolation gap. Place 100 nF ceramic decoupling capacitors on VDD1 and VDD2 as close to the IC pins as possible, and use a solid ground pour on each side of the barrier. This reduces common-mode coupling and preserves the 2500 Vrms isolation rating.
VDD1 is specified for 3 V operation, so confirm the logic-side supply is within the datasheet range before interfacing to a 3.3 V MCU or DSP. The bus-side VDD2 supply must also be decoupled with a 10 µF plus 100 nF capacitor combination if the cable is long. For systems that need isolated power, use a companion isolated DC-DC transceiver such as ADM2587EBRWZ-REEL7 instead of adding a separate isolated supply.
Compliance Information
Distributor MPN includes Z suffix, commonly used by ADI for Pb-free/RoHS compliant parts; not explicitly confirmed in fetched data. Industrial temperature grade only, not AEC-Q100 qualified.
