ADM2483BRWZ-RL7 - Isolated RS-485 Transceiver | Analog Devices
MPN: ADM2483BRWZ-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 ADM2483BRWZ-RL7 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
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ADM2483BRWZ
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View Datasheet →ADM2483BRWZ-REEL
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ISO3082DW
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ISO3088DW
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ADM2484EBRWZ
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View Datasheet →ADM2483BRWZ-RL7 Maximum Ratings & Electrical Characteristics
| Type | Isolated RS-485 Transceiver |
| Number of Channels | 3 |
| Isolation Voltage | 2500 Vrms |
| Data Rate | 500 kbps |
| Common-Mode Transient Immunity | >25 kV/µs |
| Supply Voltage (VDD1) | 3 V to 5.5 V |
| Supply Voltage (VDD2) | 5 V |
| Quiescent Current | 2.5 mA max |
| Operating Temperature Range | -40°C to +85°C |
| Package | 16-SOIC (0.295", 7.50mm Width) |
| Mounting Type | Surface Mount |
| Number of Nodes | 256 |
| Fail-Safe | True fail-safe receiver inputs |
| Slew Rate | Slew-rate limited driver outputs |
| RoHS Status | Compliant |
ADM2483BRWZ-RL7 Pin Configuration
| Pin 1 | VDD1 — Logic supply voltage (3V to 5.5V) |
| Pin 2 | GND1 — Logic ground |
| Pin 3 | RO — Receiver output |
| Pin 4 | RE — Receiver enable (active low) |
| Pin 5 | DE — Driver enable (active high) |
| Pin 6 | DI — Driver input |
| Pin 7 | GND1 — Logic ground |
| Pin 8 | NC — No connect |
| Pin 9 | NC — No connect |
| Pin 10 | A — Non-inverting bus line |
| Pin 11 | B — Inverting bus line |
| Pin 12 | GND2 — Bus ground |
| Pin 13 | NC — No connect |
| Pin 14 | NC — No connect |
| Pin 15 | VDD2 — Bus supply voltage (5V) |
| Pin 16 | GND2 — Bus 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
ADM2483BRWZ-RL7 is suitable for 6 applications: Industrial Fieldbus Networks, Building Automation, Motor Control, Remote Data Acquisition, HVAC Systems, Process Control.
Industrial Fieldbus Networks
The ADM2483BRWZ-RL7 is ideal for industrial fieldbus networks such as PROFIBUS and Modbus, where robust, isolated RS-485 communication is required over long distances. Its 2500 Vrms isolation protects control electronics from ground potential differences and electrical noise, while the 500 kbps data rate is sufficient for most process control and automation applications. The device's high common-mode transient immunity (>25 kV/µs) ensures reliable data transmission in electrically noisy environments, and its support for up to 256 nodes allows for large multi-drop networks. The slew-rate-limited driver outputs minimize EMI, making it suitable for installations with sensitive equipment.
Recommended
Building Automation
In building automation systems, the ADM2483BRWZ-RL7 provides reliable isolated RS-485 communication for HVAC controllers, lighting systems, and access control panels. Its low quiescent current (2.5 mA max) is beneficial for power-sensitive applications, and the wide operating temperature range (-40°C to +85°C) ensures operation in unconditioned spaces. The true fail-safe receiver inputs guarantee a defined logic state when the bus is idle, preventing false triggers. The device's isolation barrier protects the central controller from surges induced by long cable runs, enhancing system reliability. The compact 16-SOIC package is suitable for space-constrained control modules.
Recommended
Motor Control
The ADM2483BRWZ-RL7 is well-suited for motor control systems, where isolated RS-485 communication is used to link motor drives to a central controller. The high common-mode transient immunity (>25 kV/µs) is critical in motor drive environments, where switching transients can cause ground bounce and noise. The device's isolation barrier protects the low-voltage control circuitry from the high-voltage motor drive side. The 500 kbps data rate is adequate for transmitting speed and position commands, and the slew-rate-limited outputs reduce EMI that could interfere with nearby sensors. The device's thermal shutdown protection ensures safe operation under fault conditions.
Recommended
Remote Data Acquisition
For remote data acquisition systems, the ADM2483BRWZ-RL7 provides a robust isolated RS-485 interface for transmitting sensor data over long distances. Its low power consumption (2.5 mA max) is ideal for battery-powered or energy-harvesting remote nodes. The wide common-mode input range (-7V to +12V) accommodates large ground potential differences between remote sensors and the central data logger. The true fail-safe receiver inputs ensure reliable data when the bus is idle, and the isolation barrier protects the data logger from surges induced by lightning or other transients. The device's compact package and wide temperature range make it suitable for outdoor installations.
Recommended
HVAC Systems
In HVAC systems, the ADM2483BRWZ-RL7 enables reliable isolated RS-485 communication between thermostats, controllers, and central building management systems. Its 2500 Vrms isolation protects against ground loops and electrical noise from compressors and fans. The device's low quiescent current is beneficial for always-on communication links, and the wide operating temperature range (-40°C to +85°C) ensures operation in rooftop units and mechanical rooms. The true fail-safe receiver inputs prevent false commands during bus idle, and the slew-rate-limited outputs reduce EMI that could affect other building systems. The compact package fits easily into HVAC control boards.
Recommended
Process Control
The ADM2483BRWZ-RL7 is ideal for process control systems, where isolated RS-485 communication is used to connect field instruments, PLCs, and control valves. Its high common-mode transient immunity (>25 kV/µs) ensures reliable operation in industrial environments with heavy electrical noise. The device's isolation barrier protects the control system from ground potential differences and surges, enhancing safety and reliability. The 500 kbps data rate is sufficient for most process control loops, and the support for up to 256 nodes allows for large distributed control systems. The device's thermal shutdown protection prevents damage under fault conditions, and its wide temperature range ensures operation in harsh industrial settings.
Recommended
Recommended Products Summary
Engineering reference data for ADM2483BRWZ-RL7 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ADM2483BRWZ | ADM2483BRWZ-REEL | ISO3082DW | ISO3088DW | ADM2484EBRWZ |
|---|---|---|---|---|---|---|
| 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) | 16-SOIC (0.295", 7.50mm Width) |
| Brand | Analog Devices | Analog Devices | Analog Devices | Texas Instruments | Texas Instruments | Analog Devices |
| Isolation Voltage | 2500 Vrms | 2500 Vrms | 2500 Vrms | 2500 Vrms | 2500 Vrms | 2500 Vrms |
| Data Rate | 500 kbps | 500 kbps | 500 kbps | 500 kbps | 20 Mbps | 20 Mbps |
| Common-Mode Transient Immunity | >25 kV/µs | >25 kV/µs | >25 kV/µs | >25 kV/µs | >25 kV/µs | >25 kV/µs |
| Supply Voltage (VDD1) | 3V to 5.5V | 3V to 5.5V | 3V to 5.5V | 3.15V to 5.5V | 3.15V to 5.5V | 3V to 5.5V |
| Quiescent Current | 2.5 mA max | 2.5 mA max | 2.5 mA max | 2.5 mA max | 2.5 mA max | 2.5 mA max |
| Number of Nodes | 256 | 256 | 256 | 256 | 256 | 256 |
Key Differentiators
- Integrated iCoupler isolation (vs ISO3082DW)
- True fail-safe receiver inputs (vs ISO3082DW)
- Wide supply voltage range on logic side (vs ISO3082DW)
Design Notes
Place decoupling capacitors (0.1 µF and 10 µF) close to VDD1 and VDD2 pins to ensure stable operation. Use a solid ground plane for GND1 and GND2, but keep them separated to maintain isolation. Ensure adequate creepage and clearance distances between the logic and bus sides to meet safety standards.
Route the differential bus lines (A and B) as a twisted pair or with controlled impedance to minimize reflections. Place termination resistors (typically 120 ohms) at both ends of the bus. Keep the isolation barrier clear of copper traces to maintain the isolation rating.
Do not exceed the absolute maximum ratings for VDD1 and VDD2. Ensure that the bus side is properly powered even when the logic side is off to avoid undefined states. Use the fail-safe feature to ensure a known receiver output when the bus is idle. Avoid floating the DE and RE pins; tie them to appropriate logic levels.
Compliance Information
RoHS compliant per Analog Devices product page. Not AEC-Q100 qualified.
