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Analog Devices Inc. ADM2487EBRWZ-REEL7
- Part No.:
- ADM2487EBRWZ-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
ADM2487EBRWZ-REEL7.pdf
- Description:
- DGT ISO 2.5KV RS422/RS485 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,107
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Product details
Overview
ADM2487EBRWZ-REEL7 from Analog Devices is a 2.5 kV isolated RS-485 transceiver with integrated transformer driver, designed for industrial half-duplex communication. It operates at 500 kbps data rate, supports 3.3 V logic-side supply (VDD1), delivers isolated 3.3 V bus-side power via external transformer, and features ±15 kV ESD protection on A/B/Y/Z pins.
For engineers reviewing the ADM2487EBRWZ-REEL7 datasheet, ADM2487EBRWZ-REEL7 pinout, ADM2487EBRWZ-REEL7 application, or ADM2487EBRWZ-REEL7 equivalent, key selection considerations include its 2500 Vrms isolation rating, true fail-safe receiver inputs (−200 mV to −30 mV threshold), thermal shutdown protection, 16-lead wide-body SOIC package, and compatibility with DIN EN IEC 60747-17 (VDE 0884-17) reinforced insulation.
Technical Context
The ADM2487EBRWZ-REEL7 integrates iCoupler® digital isolation with a three-channel isolator, differential line driver, and differential receiver in one package. Its on-chip oscillator (400–600 kHz at 5 V, 230–430 kHz at 3.3 V) drives an external center-tapped transformer to generate isolated 3.3 V bus-side power (VDD2).
It implements active-high driver enable (DE) and active-low receiver enable (RE), supports up to 256 nodes on a multidrop bus, and uses true fail-safe receiver inputs that guarantee high RxD output during open/shorted line conditions without external bias resistors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | 500 kbps - Guaranteed timing compliance for robust low-speed industrial control links |
| Isolation Voltage | 2500 Vrms for 1 minute - Meets UL 1577 safety requirement for reinforced barrier integrity |
| ESD Protection | ±15 kV HBM on A/B/Y/Z - Eliminates need for external TVS diodes in harsh factory environments |
| Common-Mode Transient Immunity | 25 kV/µs - Maintains reliable operation during fast-switching motor drive noise coupling |
| Receiver Threshold | −200 mV to −30 mV - Ensures fail-safe high output during bus idle or fault without bias resistors |
| Oscillator Frequency | 400–600 kHz (VDD1 = 5 V) - Drives external transformer for stable isolated 3.3 V bus supply generation |
| Thermal Shutdown | Triggers at 150°C die temperature - Protects against sustained short-circuit faults on Y/Z outputs |
Pinout & Package
ADM2487EBRWZ-REEL7 is housed in a wide-body 16-lead SOIC package (SOIC_W) with creepage/clearance ≥7.8 mm, rated for pollution degree 2 and altitudes ≤2000 m per IEC 62368-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| D1, D2 | Transformer driver outputs | Drive external center-tapped transformer primary to generate isolated 3.3 V bus supply |
| GND1, VDD1 | Logic-side ground and supply | Accept 3.3 V or 5 V input; require 0.01–0.1 µF decoupling capacitor to GND1 |
| RxD, TxD, DE, RE | Digital interface signals | Standard UART-level logic I/O referenced to GND1; DE active-high, RE active-low |
| GND2, VDD2 | Bus-side ground and supply | VDD2 = isolated 3.3 V output from transformer/LDO; GND2 must be separated from GND1 |
| Y, Z, A, B | RS-485 differential I/O | Y/Z = driver outputs; A/B = receiver inputs; all rated for −9 V to +14 V common-mode range |
| NC | No connect | Pin 10 must remain unconnected and floating per datasheet |
Key Features
| Feature | Design Value |
|---|---|
| Integrated transformer driver | Eliminates need for separate isolated DC/DC converter; reduces BOM count and PCB area |
| True fail-safe receiver | Guarantees high RxD during open-circuit, short-circuit, or terminated-idle bus states |
| iCoupler® magnetic isolation | Provides 2500 Vrms isolation with 3 pF input-to-output capacitance for low noise coupling |
| Reinforced insulation certification | DIN EN IEC 60747-17 (VDE 0884-17) approval with VIORM = 560 Vpeak |
| Industrial temperature range | Full functionality from −40°C to +85°C enables deployment in motor control cabinets and field-mounted PLCs |
Applications
| Programmable Logic Controller (PLC) Backplane | Industrial Motor Drive Interface |
|---|---|
Use Scenario: Bidirectional command and status exchange between CPU module and I/O expansion modules over daisy-chained RS-485 backplane. IC Role / Device Role / Timing Role: Isolated transceiver providing galvanic separation between logic and field-side circuits while maintaining deterministic 500 kbps polling response. Use Value: Prevents ground loop currents from disrupting CPU operation and enables safe hot-swap of I/O modules without system reset. | Use Scenario: Communication link between main controller and distributed servo/inverter units in multi-axis motion systems. IC Role / Device Role / Timing Role: Half-duplex RS-485 interface with 25 kV/µs CMTI ensuring immunity to fast dv/dt noise from IGBT switching. Use Value: Maintains error-free command transmission despite high di/dt transients induced by adjacent power stages. |
| Building Automation Network Node | Remote RTU Data Acquisition |
Use Scenario: Field node connecting HVAC controllers, lighting panels, and sensor clusters to central BMS via twisted-pair RS-485 trunk. IC Role / Device Role / Timing Role: Fail-safe transceiver enabling reliable startup and recovery when bus segments are intermittently disconnected or unterminated. Use Value: Eliminates need for manual bias resistor configuration across 100+ field nodes, reducing commissioning time and field failure rates. | Use Scenario: Solar farm or water utility remote terminal unit collecting meter readings and actuator feedback over long-distance (>1 km) RS-485 lines. IC Role / Device Role / Timing Role: Isolated bus interface supporting 256-node addressing and ±15 kV ESD protection against lightning-induced surges on outdoor cabling. Use Value: Extends mean time between failures by preventing latch-up or permanent damage from electrostatic discharge events at unshielded enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar isolated RS-485 transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISO3082DWR | Lower isolation rating (2500 Vrms but no VDE 0884-17), no integrated transformer driver, requires external isolated supply | Suitable for cost-sensitive designs where external DC/DC is already present | Select ISO3082DWR only if board space allows external isolated power and VDE certification is not required |
| ADM2483BRWZ-REEL7 | Same package and pinout, but rated for 16 Mbps data rate and higher IDD2 current draw (50 mA vs. 40 mA at 500 kbps) | Better suited for high-speed diagnostics or firmware updates, less optimal for low-power continuous monitoring | Choose ADM2483BRWZ-REEL7 when >500 kbps throughput is mandatory; otherwise ADM2487EBRWZ-REEL7 offers lower power and better noise immunity at base speed |
Compared with ISO3082DWR, ADM2487EBRWZ-REEL7 eliminates external isolated power design effort and adds VDE-certified reinforced insulation; compared with ADM2483BRWZ-REEL7, it trades peak speed for lower bus-side current consumption and improved electromagnetic robustness at standard industrial baud rates.
Availability
ADM2487EBRWZ-REEL7 is available at Aetrix Electronics and suitable for industrial automation, building management systems, and remote telemetry requiring stable component supply, long-term lifecycle support, and certified isolation performance.
Supply support for ADM2487EBRWZ-REEL7 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The ADM2487E product line delivers isolated RS-485 communication solutions targeting electrically noisy industrial environments where galvanic separation, ESD resilience, and regulatory compliance are non-negotiable design requirements.
FAQ
What is the maximum data rate supported by the ADM2487EBRWZ-REEL7?
The ADM2487EBRWZ-REEL7 is specified for reliable operation at 500 kbps in half-duplex mode. While the device can function at lower rates, its timing parameters-including propagation delay (250–700 ns), rise/fall time (200–1100 ns), and enable/disable times-are fully characterized and guaranteed only up to 500 kbps per the Rev. B datasheet. Higher speeds require the pin-compatible ADM2483 variant.
Does the ADM2487EBRWZ-REEL7 require external bias resistors on the RS-485 bus?
No, the ADM2487EBRWZ-REEL7 does not require external bias resistors. Its true fail-safe receiver has a guaranteed input threshold between −200 mV and −30 mV, ensuring the RxD output remains high during bus idle, open-circuit, or short-circuit conditions-eliminating dependency on external pull-up/pull-down networks.
Can the ADM2487EBRWZ-REEL7 operate with a 3.3 V supply on both logic and bus sides?
Yes, the ADM2487EBRWZ-REEL7 supports 3.3 V on VDD1 (logic side). However, VDD2 (bus side) is powered by an isolated 3.3 V supply generated internally via the D1/D2 transformer driver. When VDD1 = 3.3 V, a step-up transformer is required to compensate for Schottky diode and LDO drops to maintain regulated 3.3 V on VDD2.
What safety certifications apply to the ADM2487EBRWZ-REEL7?
The ADM2487EBRWZ-REEL7 carries UL 1577 certification (2500 Vrms, 1 minute) and DIN EN IEC 60747-17 (VDE 0884-17) approval for reinforced insulation with VIORM = 560 Vpeak. It is not CSA or CQC certified. Clearance and creepage distances meet IEC 62368-1 requirements for pollution degree 2.
How does thermal shutdown protect the ADM2487EBRWZ-REEL7 during fault conditions?
The ADM2487EBRWZ-REEL7 disables its Y/Z driver outputs when die temperature reaches 150°C due to overcurrent or bus contention. Outputs automatically re-enable once the junction cools to 140°C. This cycle prevents permanent damage during sustained short-circuits or excessive bus loading, and applies independently of VDD1/VDD2 supply states.
ADM2487EBRWZ-REEL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- iCoupler®
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Magnetic Coupling
- Type:
- RS422, RS485
- Isolated Power:
- No
- Number of Channels:
- 3
- Inputs - Side 1/Side 2:
- 2/1
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 2500Vrms
- Common Mode Transient Immunity (Min):
- 25kV/µs
- Data Rate:
- 500kbps
- Propagation Delay tpLH / tpHL (Max):
- -
- Pulse Width Distortion (Max):
- -
- Rise / Fall Time (Typ):
- 1.1µs, 1.1µs (Max)
- Voltage - Supply:
- 3.3V, 5V
- Grade:
- -
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
ADM2487EBRWZ-REEL7 FAQ
1.How can I place an order for ADM2487EBRWZ-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM2487EBRWZ-REEL7 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ADM2487EBRWZ-REEL7 reliable?
The price and inventory of ADM2487EBRWZ-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM2487EBRWZ-REEL7 is usually 5 days.
3.What payment methods are accepted for ADM2487EBRWZ-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM2487EBRWZ-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM2487EBRWZ-REEL7?
ADM2487EBRWZ-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM2487EBRWZ-REEL7 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ADM2487EBRWZ-REEL7?
For technical support, including ADM2487EBRWZ-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM2487EBRWZ-REEL7 requirements.
6.How does Aetrix verify that ADM2487EBRWZ-REEL7 is sourced from the original manufacturer or authorized distributors?
All ADM2487EBRWZ-REEL7 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ADM2487EBRWZ-REEL7 meets industry standards.
7.What is the process for return or replacement of ADM2487EBRWZ-REEL7?
All ADM2487EBRWZ-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADM2487EBRWZ-REEL7, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ADM2487EBRWZ-REEL7 part is unused and in its original packaging.
Return procedure for ADM2487EBRWZ-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADM2487EBRWZ-REEL7 Tags
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