ADM2486BRWZ

Overview

The ADM2486BRWZ is a half-duplex, isolated RS-485 transceiver utilizing Analog Devices iCoupler magnetic coupling technology. It integrates a transmitter, receiver, and three-channel digital isolator in a single 16-pin SOIC package. The device supports data rates up to 20 Mb/s and operates with a logic supply voltage range of 2.7 V to 5.5 V. It provides 2500 Vrms isolation voltage and functions within an industrial temperature range of -40°C to +85°C.

Feature Summary

• Integrates galvanic isolation using iCoupler magnetic coupling technology without requiring external isolation components.
• Complies with ANSI EIA/TIA-485-A and ISO 8482:1987(E) standards for RS-485 communication.
• Includes built-in protection features such as short-circuit current limiting and thermal shutdown to prevent excessive power dissipation during bus contention.

Applications

• Isolated RS-485 and RS-422 interface circuits
• PROFIBUS network systems
• Industrial fieldbus applications
• Multipoint data transmission systems

Procurement Notes

Verify the specific suffix (e.g., Z for lead-free, REEL for tape-and-reel packaging) against the required procurement specification. Confirm that the component meets RoHS compliance requirements if applicable to the target assembly process. Ensure the selected package variant matches the PCB footprint design constraints.

Selection Notes

Select this component when high-speed bidirectional communication over balanced lines requires robust galvanic isolation. It is suitable for designs needing to replace optocouplers while maintaining signal integrity at 20 Mbps. Consider the 16-pin SOIC form factor for space-constrained industrial enclosures requiring certified creepage distances.

Part Context

This part belongs to the ADM2486 series of isolated transceivers. It shares the core iCoupler architecture with other variants in the family but is specifically optimized for half-duplex RS-485 protocols. The BRWZ designation indicates the commercial temperature grade and wide-body SOIC packaging configuration.

Replacement Considerations

ADM2485BRWZ is a documented alternative offering similar isolation characteristics with a 16 Mb/s data rate capability.

FAQ

Does the ADM2486BRWZ support full-duplex operation?

No, the ADM2486BRWZ is designed specifically for half-duplex communication on multipoint bus lines.

What isolation technology does this device use?

It utilizes iCoupler technology, which employs magnetic coupling to provide galvanic isolation between the logic and bus sides.