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ADM2587E Isolated RS-485 Transceiver

ADM2587E Isolated RS-485 Transceiver

MPN: ADM2587EBRWZ-REEL7
Analog Devices
Digital Isolators 2.5 kV Signal and Power Isolated, 15 kV ESD Protected, Full/Half Duplex RS-485 Transceiver (500kbps)
11,079 in stock

Overview

The ADM2587EBRWZ-REEL7 is an isolated RS-485/RS-422 transceiver from Analog Devices. It combines signal isolation and isolated power in one device, which helps simplify compact industrial communication designs. It is intended for robust serial links where ground potential differences and noise are a concern.

Why Choose This Part

This part integrates isolation, isolated power, and an RS-485/RS-422 transceiver into a single package, reducing BOM count and board area. That integration can simplify layout and help avoid the extra isolated DC/DC and discrete isolator components that a conventional design would require. It is a practical choice when you need a compact, noise-tolerant serial interface with galvanic isolation.

Applications

Industrial fieldbus nodes
Use it for RS-485 network connections in PLCs, remote I/O, and factory automation equipment.
Building automation
A good fit for BACnet MS/TP, Modbus RTU, and similar differential serial links.
Isolated sensor interfaces
Connect sensors or remote modules over long cable runs while maintaining galvanic isolation.
Motor control and drives
Useful for isolated control and diagnostic ports in noisy electromechanical environments.
Utility and energy metering
Supports rugged serial communication between metering electronics and external networks.

Key Specifications

Type RS422, RS485
Data Rate 500kbps
Technology Magnetic Coupling
Channel Type Unidirectional
Mounting Type Surface Mount
Isolated Power Yes
Package / Case 20-SOIC (0.295", 7.50mm Width)
Voltage - Supply 3.3V, 5V
Number of Channels 2
Voltage - Isolation 2500Vrms
Operating Temperature -40degC ~ 85degC
Inputs - Side 1/Side 2 1/1
Rise / Fall Time (Typ) 1.1us, 1.1us (Max)
Supplier Device Package 20-SOIC
Common Mode Transient Immunity (Min) 25kV/us

Getting Started

Design in the ADM2587E using Analog Devices documentation for pinout, supply connections, and bus termination guidance. For evaluation and bring-up, use an ADI evaluation board or a similar RS-485 test setup with a UART-capable MCU or USB-to-UART adapter. Pay close attention to isolation spacing, termination, fail-safe biasing, and cable shielding/grounding practices.

Also Consider

ADM2687E Analog Devices - A closely related isolated RS-485 transceiver family option when you want similar integration but should compare package and channel details for your design.