ADM2483BRWZ - Isolated RS-485 Transceiver | Analog Devices
MPN: ADM2483BRWZ β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.5 | $6.50 |
| 10 | $5.85 | $58.50 |
| 100 | $4.95 | $495.00 |
| 500 | $4.2 | $2,100.00 |
| 1,000 | $3.75 | $3,750.00 |
Drop-in alternatives for ADM2483BRWZ β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
ADM2483BRWZ-REEL
β Drop-Inπ Reference alternative (not in catalog)
ADM2483BRW-REEL
β Drop-Inπ Reference alternative (not in catalog)
ADM2483BRW
β Drop-Inπ Reference alternative (not in catalog)
ISO3082DW
β Drop-Inπ Reference alternative (not in catalog)
ISO35DW
β Drop-Inπ Reference alternative (not in catalog)
ADM2483BRWZ Maximum Ratings & Electrical Characteristics
| Type | Isolated RS-485/RS-422 Transceiver |
| Number of Channels | 3 |
| Isolation Voltage | 2500 Vrms |
| Data Rate | 500 kbps |
| Common-Mode Transient Immunity (CMTI) | 25 kV/Β΅s |
| Supply Voltage (Logic Side) | 3 V or 5 V |
| Supply Voltage (Bus Side) | 5 V |
| Operating Temperature Range | -40Β°C to +85Β°C |
| Package | 16-SOIC (0.295", 7.50mm Width) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| REACH Status | Unaffected |
| MSL Level | 1 (Unlimited) |
| Driver Outputs | Slew-limited |
| Compliance | ANSI EIA/TIA-485-A, ISO 8482:1987 (E) |
ADM2483BRWZ Pin Configuration
| Pin 1 | VDD1 β Logic side supply voltage (3V or 5V) |
| Pin 2 | GND1 β Logic side ground |
| Pin 3 | RO β Receiver output |
| Pin 4 | RE β Receiver enable (active low) |
| Pin 5 | DE β Driver enable (active high) |
| Pin 6 | DI β Driver input |
| Pin 7 | GND1 β Logic side ground |
| Pin 8 | NC β No connect |
| Pin 9 | VDD2 β Bus side supply voltage (5V) |
| Pin 10 | GND2 β Bus side ground |
| Pin 11 | A β Non-inverting bus line |
| Pin 12 | B β Inverting bus line |
| Pin 13 | GND2 β Bus side ground |
| Pin 14 | NC β No connect |
| Pin 15 | NC β No connect |
| Pin 16 | VDD1 β Logic side supply voltage |
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
ADM2483BRWZ is suitable for 6 applications: Industrial Fieldbus Networks, Building Automation and HVAC, Process Control and Instrumentation, Motor Control and Drives, Renewable Energy and Solar Inverters, Transportation and Rail.
Industrial Fieldbus Networks
The ADM2483BRWZ is ideal for industrial fieldbus networks such as Modbus and PROFIBUS. Its 500 kbps data rate and 2500 Vrms isolation ensure reliable communication over long distances in electrically noisy environments. The high CMTI of 25 kV/Β΅s protects against transients from motors and other industrial equipment, while the slew-limited driver reduces EMI. The device's wide operating temperature range (-40Β°C to +85Β°C) suits factory floor conditions. It can be used as a drop-in replacement in existing RS-485 nodes, providing galvanic isolation to prevent ground loops and protect sensitive controllers.
Recommended
Building Automation and HVAC
In building automation systems, the ADM2483BRWZ provides isolated RS-485 communication between HVAC controllers, sensors, and actuators. Its 3 V logic-side supply allows direct interfacing with low-power microcontrollers, while the 5 V bus side drives long cable runs. The isolation barrier protects control panels from ground potential differences between floors or buildings. The device's low power consumption (2.5 mA max) is beneficial for always-on systems. Its compliance with ANSI TIA/EIA RS-485-A ensures interoperability with standard building automation protocols like BACnet MS/TP.
Recommended
Process Control and Instrumentation
The ADM2483BRWZ is used in process control systems to isolate RS-485 links between PLCs, sensors, and actuators. Its 2500 Vrms isolation protects against voltage surges and ground loops in industrial plants. The 500 kbps data rate is sufficient for most process control applications, and the high CMTI ensures reliable operation in the presence of electromagnetic interference from heavy machinery. The device's robust design and wide temperature range make it suitable for harsh environments. It can be used in both point-to-point and multipoint configurations, supporting up to 64 nodes on a bus.
Recommended
Motor Control and Drives
In motor control systems, the ADM2483BRWZ provides isolated communication between the drive controller and the fieldbus. Its high CMTI of 25 kV/Β΅s is critical in the presence of fast switching transients from IGBTs and MOSFETs. The isolation barrier protects the low-voltage control circuitry from the high-voltage bus. The device's slew-limited driver reduces EMI, which is important in motor drive cabinets. The 500 kbps data rate is adequate for parameter setting and status monitoring. The wide temperature range ensures reliable operation near motors that generate heat.
Recommended
Renewable Energy and Solar Inverters
The ADM2483BRWZ is used in solar inverters and wind turbines for isolated RS-485 communication between the inverter controller and monitoring systems. Its 2500 Vrms isolation protects against high voltages and transients in power conversion equipment. The device's high CMTI ensures reliable operation in the presence of switching noise from the inverter. The wide operating temperature range (-40Β°C to +85Β°C) suits outdoor installations. The low power consumption is beneficial for energy-efficient systems. The device's compliance with RS-485 standards ensures compatibility with standard monitoring protocols.
Recommended
Transportation and Rail
In railway and transportation systems, the ADM2483BRWZ provides isolated RS-485 communication for signaling, diagnostics, and passenger information systems. Its 2500 Vrms isolation meets safety requirements for electrical isolation between different subsystems. The high CMTI ensures reliable operation in the presence of electromagnetic interference from traction motors and overhead lines. The device's wide temperature range and robust design make it suitable for harsh environments. The 500 kbps data rate is sufficient for control and monitoring applications. The device's compliance with RS-485 standards ensures interoperability with existing infrastructure.
Recommended
Recommended Products Summary
Engineering reference data for ADM2483BRWZ β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ADM2483BRWZ-REEL | ADM2483BRW-REEL | ISO3082DW |
|---|---|---|---|---|
| Package | 16-SOIC (7.50mm) | 16-SOIC (7.50mm) | 16-SOIC (7.50mm) | 16-SOIC (7.50mm) |
| Brand | Analog Devices | Analog Devices | Analog Devices | Texas Instruments |
| Isolation Voltage | 2500 Vrms | 2500 Vrms | 2500 Vrms | 2500 Vrms |
| Data Rate | 500 kbps | 500 kbps | 500 kbps | 200 kbps |
| CMTI | 25 kV/Β΅s | 25 kV/Β΅s | 25 kV/Β΅s | 25 kV/Β΅s |
| Supply Voltage (Logic) | 3V or 5V | 3V or 5V | 3V or 5V | 5V only |
| Operating Temperature | -40Β°C to +85Β°C | -40Β°C to +85Β°C | -40Β°C to +85Β°C | -40Β°C to +85Β°C |
| RoHS | Compliant | Compliant | Non-compliant | Compliant |
Key Differentiators
- Dual supply voltage on logic side (3V or 5V) (vs ISO3082DW)
- Higher data rate (500 kbps vs 200 kbps) (vs ISO3082DW)
- RoHS compliant version available (vs ADM2483BRW)
Design Notes
Place decoupling capacitors (0.1 Β΅F and 10 Β΅F) close to both VDD1 and VDD2 pins to ensure stable operation. Use a solid ground plane on both sides of the isolation barrier, but do not connect GND1 and GND2 together except through the isolation barrier. Keep the isolation barrier clear of copper traces to maintain the specified isolation voltage.
Route the differential bus lines (A and B) as a twisted pair or parallel traces with controlled impedance (typically 120 ohms). Keep the traces as short as possible and avoid stubs. Place the termination resistor (120 ohms) at both ends of the bus. Ensure the isolation barrier is not bridged by any traces or vias to maintain isolation integrity.
Do not exceed the absolute maximum ratings for supply voltage or bus voltage. Ensure the bus side is powered with 5V only; applying 3V to VDD2 may cause malfunction. Also, verify that the logic side supply (VDD1) is within the specified range (3V to 5.5V). Incorrect termination can cause reflections and data errors; always terminate the bus at both ends.
Compliance Information
RoHS3 compliant and REACH unaffected per PartGenie listing. Not AEC-Q100 qualified as it is not an automotive-grade part.
