ADM2490EBRWZ-RL7 - Isolated RS-485 Transceiver | Analog Devices
MPN: ADM2490EBRWZ-RL7 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.5 | $6.50 |
| 10 | $5.85 | $58.50 |
| 100 | $5.2 | $520.00 |
| 500 | $4.68 | $2,340.00 |
| 1,000 | $4.16 | $4,160.00 |
Drop-in alternatives for ADM2490EBRWZ-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:
ADM2490EBRWZ
✅ Drop-In✓ In Stock
$4.16 / Unit
View Datasheet →ADM2483BRWZ
✅ Drop-In✓ In Stock
$3.75 / Unit
View Datasheet →ISO3082DW
✅ Drop-In📋 Reference alternative (not in catalog)
ISL32704EIBZ
✅ Drop-In📋 Reference alternative (not in catalog)
ADM2490EBRWZ-RL7 Maximum Ratings & Electrical Characteristics
| Type | Isolated RS-485 Transceiver |
| Number of Channels | 2 (1 driver, 1 receiver) |
| Data Rate | 16 Mbps |
| Isolation Voltage | 5000 Vrms |
| Common-Mode Transient Immunity (CMTI) | 25 kV/µs |
| Supply Voltage (Logic Side) | 5 V |
| Supply Voltage (Bus Side) | 5 V |
| Duplex | Full |
| Number of Nodes | 64 |
| ESD Protection | ±15 kV (IEC 61000-4-2) |
| Operating Temperature Range | -40°C to +105°C |
| Package | 16-SOIC (0.295", 7.50mm Width) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Standards | TIA/EIA RS-485, RS-422 |
ADM2490EBRWZ-RL7 Pin Configuration
| Pin 1 | VDD1 — Logic side supply voltage (5V) |
| Pin 2 | GND1 — Logic side ground |
| Pin 3 | DI — Driver input |
| Pin 4 | RO — Receiver output |
| Pin 5 | RE — Receiver enable (active low) |
| Pin 6 | DE — Driver enable (active high) |
| Pin 7 | GND1 — Logic side ground |
| Pin 8 | NC — No connect |
| Pin 9 | A — Non-inverting bus terminal |
| Pin 10 | B — Inverting bus terminal |
| Pin 11 | GND2 — Bus side ground |
| Pin 12 | Y — Driver output (non-inverting) |
| Pin 13 | Z — Driver output (inverting) |
| Pin 14 | GND2 — Bus side ground |
| Pin 15 | VDD2 — Bus side supply voltage (5V) |
| Pin 16 | GND2 — Bus side ground |
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
ADM2490EBRWZ-RL7 is suitable for 6 applications: Industrial Fieldbus Systems, Building Automation and HVAC Control, Isolated Data Acquisition Systems, Motor Drives and Power Inverters, Solar Inverters and Energy Storage Systems, Transportation and Rail Systems.
Industrial Fieldbus Systems
The ADM2490EBRWZ-RL7 provides isolated RS-485 communication for industrial fieldbus networks such as PROFIBUS and Modbus. Its 5000 Vrms isolation and 25 kV/µs CMTI ensure reliable data transfer in environments with high electrical noise and ground potential differences. The 16 Mbps data rate supports fast polling cycles, while the full-duplex interface enables simultaneous read/write operations, improving network efficiency. The device's 64-node capability allows scalable network topologies, and its industrial temperature range (-40°C to +105°C) ensures operation in harsh factory floors.
Recommended
Building Automation and HVAC Control
In building automation, the ADM2490EBRWZ-RL7 enables isolated communication between HVAC controllers, sensors, and actuators over long cable runs. The 5000 Vrms isolation protects sensitive control electronics from ground loops and lightning-induced surges. The full-duplex interface allows simultaneous status monitoring and command updates, while the 16 Mbps data rate supports rapid response in real-time control loops. The device's low power consumption and wide temperature range make it suitable for deployment in mechanical rooms and rooftop units. Its compliance with RS-485 standards ensures interoperability with existing building management systems.
Recommended
Isolated Data Acquisition Systems
The ADM2490EBRWZ-RL7 is ideal for isolated data acquisition systems where sensors and data loggers are separated by large ground potential differences. The 5000 Vrms isolation prevents ground loops that could corrupt analog measurements. The full-duplex interface allows continuous data streaming and command updates, while the 16 Mbps data rate supports high-throughput data transfer from multi-channel ADC systems. The device's high CMTI ensures accurate data transmission even in the presence of fast transients from nearby power equipment. Its compact SOIC-16 package saves board space in space-constrained designs.
Recommended
Motor Drives and Power Inverters
In motor drives and power inverters, the ADM2490EBRWZ-RL7 provides isolated communication between the control board and the power stage. The 5000 Vrms isolation protects low-voltage control electronics from high-voltage transients and switching noise. The 25 kV/µs CMTI ensures reliable data transmission despite fast voltage slew rates on the bus. The full-duplex interface enables simultaneous monitoring of motor status and sending of control commands, improving response times. The device's industrial temperature range and robust ESD protection make it suitable for harsh motor control environments.
Recommended
Solar Inverters and Energy Storage Systems
The ADM2490EBRWZ-RL7 enables isolated RS-485 communication in solar inverters and battery energy storage systems. The 5000 Vrms isolation provides safety isolation between the high-voltage DC bus and the communication interface, meeting stringent safety standards. The full-duplex interface allows simultaneous monitoring of inverter status and control commands, while the 16 Mbps data rate supports fast data logging. The device's high CMTI ensures reliable communication in the presence of switching transients from power electronics. Its wide temperature range (-40°C to +105°C) supports outdoor installation in extreme climates.
Recommended
Transportation and Rail Systems
In transportation and rail systems, the ADM2490EBRWZ-RL7 provides isolated RS-485 communication for onboard control networks, signaling, and diagnostics. The 5000 Vrms isolation ensures safety and reliability in high-vibration, high-EMI environments. The full-duplex interface supports simultaneous data exchange between train control units and wayside equipment. The device's industrial temperature range and robust ESD protection meet the demanding requirements of railway applications. Its compliance with RS-485 standards ensures interoperability with existing railway communication protocols.
Recommended
Recommended Products Summary
Engineering reference data for ADM2490EBRWZ-RL7 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ADM2490EBRWZ | ADM2483BRWZ | ISO3082DW | ISL32704EIBZ |
|---|---|---|---|---|---|
| Package | 16-SOIC (0.295", 7.50mm Width) | 16-SOIC (0.295", 7.50mm Width) - same | 16-SOIC (0.295", 7.50mm Width) - same | 16-SOIC (0.295", 7.50mm Width) - same | 16-SOIC (0.295", 7.50mm Width) - same |
| Brand | Analog Devices | Analog Devices | Analog Devices | Texas Instruments | Renesas Electronics |
| Duplex | Full | Full | Half | Half | Full |
| Data Rate | 16 Mbps | 16 Mbps | 500 kbps | 20 Mbps | 40 Mbps |
| Isolation Voltage | 5000 Vrms | 5000 Vrms | 2500 Vrms | 2500 Vrms | 2500 Vrms |
| CMTI | 25 kV/µs | 25 kV/µs | 25 kV/µs | 50 kV/µs | 50 kV/µs |
| Number of Nodes | 64 | 64 | 256 | 256 | 256 |
| ESD Protection | ±15 kV (IEC 61000-4-2) | ±15 kV (IEC 61000-4-2) | ±15 kV (IEC 61000-4-2) | ±16 kV (IEC 61000-4-2) | ±16 kV (IEC 61000-4-2) |
Key Differentiators
- Higher isolation voltage (5000 Vrms) compared to many alternatives (vs ISO3082DW)
- Full-duplex operation at 16 Mbps (vs ADM2483BRWZ)
- Higher CMTI (25 kV/µs) for robust operation in noisy environments (vs ISL32704EIBZ)
Design Notes
For the ADM2490EBRWZ-RL7, maintain a minimum creepage distance of 8 mm between the logic side (pins 1-8) and bus side (pins 9-16) to achieve the 5000 Vrms isolation rating. Use a PCB with a minimum of 4 layers to provide a solid ground plane on both sides of the isolation barrier. Place decoupling capacitors (0.1 µF and 10 µF) close to VDD1 and VDD2 pins to ensure stable supply voltages.
Route the differential bus lines (A, B, Y, Z) as a twisted pair with controlled impedance (typically 120 Ω) to minimize reflections and electromagnetic interference. Keep the bus lines away from high-speed digital traces and power switching circuits. Terminate the bus with 120 Ω resistors at both ends to match the characteristic impedance of the cable.
Do not exceed the absolute maximum supply voltage of 6V on VDD1 or VDD2. Ensure that the enable pins (RE and DE) are properly driven to avoid bus contention. When using the device in a multipoint bus, ensure that only one driver is active at a time to prevent data corruption. Also, verify that the common-mode voltage range of the receiver is not exceeded, as specified in the datasheet.
Compliance Information
RoHS compliant per Analog Devices product page. Not AEC-Q100 qualified. Halogen-free status not specified in available data.
