Quick Answers: What Is the ADM2587EBRWZ-REEL7 and Why Does It Matter?
The ADM2587EBRWZ-REEL7 from Analog Devices is a fully integrated signal and power isolated RS-485/RS-422 transceiver with ±15 kV ESD protection, 2500 Vrms isolation, and a data rate of 500 kbps. It supports up to 256 nodes on a bus and operates from a 3.3 V or 5 V supply. As of 2026-08-25, the component is in active lifecycle with 99,999 units in stock at XAIPART, priced at $6.8409 per unit for quantities of 1000 or more.
This device integrates an isoPower isolated DC-to-DC converter, eliminating the need for an external isolated power supply, which simplifies PCB design and reduces board space. It is designed for industrial automation, building control, and instrumentation networks where ground loops and common-mode voltages are a concern.
Technical Guide: How to Select, Design In, and Use the ADM2587EBRWZ-REEL7
Key Specifications and Features
| Parameter | Value |
|---|---|
| Isolation Voltage | 2500 Vrms |
| ESD Protection | ±15 kV (HBM) |
| Data Rate | 500 kbps |
| Common-Mode Transient Immunity | >25 kV/µs |
| Supply Voltage | 3.3 V or 5 V |
| Number of Nodes | 256 |
| Duplex | Full/Half |
| Fail-Safe | Open and short circuit |
| Thermal Shutdown | Yes |
| Package | 20-SOIC (0.295", 7.50mm Width) |
| Operating Temperature | -40°C to +85°C |
| Standards | ANSI/TIA/EIA-485-A-98, ISO 8482:1987(E) |
| RoHS | Compliant |
| Mounting Type | Surface Mount |
| Number of Channels | 2 |
Pinout and Functional Description
The ADM2587EBRWZ-REEL7 comes in a 20-lead SOIC package. Key pins are listed below; for the full pinout, refer to the datasheet.
| Pin Number | Pin Name | Description |
|---|---|---|
| 1 | VCC | Logic side power supply (3.3V or 5V) |
| 2 | GND | Logic side ground |
| 3 | TXD | Transmit data input |
| 4 | RXD | Receive data output |
| 5 | DE | Driver enable (active high) |
| 6 | RE | Receiver enable (active low) |
| 7 | VISO | Isolated power output |
| 8 | GNDISO | Isolated ground |
| 9 | A | Non-inverting bus pin |
| 10 | B | Inverting bus pin |
| 11 | Y | Driver output (non-inverting) |
| 12 | Z | Driver output (inverting) |
Design Considerations
When designing with the ADM2587EBRWZ-REEL7, ensure proper PCB layout with adequate creepage and clearance distances for the isolation barrier. Place decoupling capacitors close to the VCC and VISO pins. The integrated DC-DC converter requires an external transformer and rectifier circuit, as specified in the datasheet, to generate the isolated supply voltage.
For half-duplex operation, connect DE and RE together and control them with a single GPIO. For full-duplex, use separate control lines. The fail-safe receiver inputs guarantee a defined output state even when the bus is open or shorted.
Alternatives & Comparison: Drop-In Replacements for ADM2587EBRWZ-REEL7
Based on verified data, the primary drop-in alternative is the ADM2582EBRWZ-REEL7, which is half-duplex only but shares the same package and pinout. The non-REEL7 variant ADM2587EBRWZ is also identical in specifications but supplied in tube packaging.
| Parameter | ADM2587EBRWZ-REEL7 | ADM2582EBRWZ-REEL7 |
|---|---|---|
| Isolation Voltage | 2500 Vrms | 2500 Vrms |
| ESD Protection | ±15 kV (HBM) | ±15 kV (HBM) |
| Data Rate | 500 kbps | 500 kbps |
| Common-Mode Transient Immunity | >25 kV/µs | >25 kV/µs |
| Supply Voltage | 3.3 V or 5 V | 3.3 V or 5 V |
| Number of Nodes | 256 | 256 |
| Duplex | Full/Half | Half |
| Fail-Safe | Open and short circuit | Open and short circuit |
| Thermal Shutdown | Yes | Yes |
| Package | 20-SOIC (0.295", 7.50mm Width) | 20-SOIC (0.295", 7.50mm Width) |
| Operating Temperature | -40°C to +85°C | -40°C to +85°C |
| Standards | ANSI/TIA/EIA-485-A-98, ISO 8482:1987(E) | ANSI/TIA/EIA-485-A-98, ISO 8482:1987(E) |
| RoHS | Compliant | Compliant |
| Mounting Type | Surface Mount | Surface Mount |
| Number of Channels | 2 | 2 |
Summary: For full-duplex applications, the ADM2587EBRWZ-REEL7 is the right choice. If half-duplex is sufficient, the ADM2582EBRWZ-REEL7 offers a cost-effective drop-in alternative with identical isolation and ESD ratings.
Industry Insight: Market Position, Lifecycle, and Supply Situation
The ADM2587EBRWZ-REEL7 is in an active lifecycle, indicating ongoing production and availability. As of 2026-08-25, XAIPART holds 99,999 units in stock, ensuring immediate availability for design and production needs. The pricing tiers reflect volume discounts, with the base price at $6.8409 for quantities of 1000 or more.
[DATA_NEEDED: Market share data for isolated RS-485 transceivers]
[DATA_NEEDED: Lead time from manufacturer]
Trends & Outlook: What Buyers Should Watch
With the increasing adoption of industrial IoT and smart manufacturing, the demand for robust isolated RS-485 transceivers is expected to grow. The ADM2587EBRWZ-REEL7's integrated power isolation and high ESD protection make it well-suited for next-generation industrial networks. Buyers should monitor supply chain trends and consider long-term availability, given the active lifecycle status.
As data rates in industrial networks increase, there may be a shift toward higher-speed transceivers, but the 500 kbps rate remains adequate for most fieldbus protocols. The device's compliance with ANSI/TIA/EIA-485-A-98 and ISO 8482:1987(E) ensures interoperability in global deployments.
Comments
Be the first to comment.
🔐 Please sign in to post a comment.
Don't have an account? Sign up