Low-Cost Isolated RS-485 Transceiver Evaluation Board


The ISL32704EVAL1Z board enables the evaluation of the ISL32704E isolated, half-duplex RS-485 transceiver in a typical bus node application, used in isolated industrial networks.

The ISL32704E is a galvanically isolated, differential bus transceiver designed for bidirectional data transmission and meeting the RS-485 and RS-422 standards for balanced communication. Each of the bus terminals, A and B, is protected against ±15kV ESD strikes without latch-up.

The device uses Giant Magnetoresistance (GMR) as isolation technology. A unique ceramic/polymer composite barrier provides excellent isolation and virtually unlimited barrier life.

Key Features

  • Tiny isolated RS-485 transceiver
  • Drive capability of up to 32 x 1UL-transceivers
  • Isolated 3.3V to 5V DC/DC converter with regulated output
  • Small total device footprint of 183mm2


  • Factory automation
  • Security networks
  • Building environmental control systems
  • Industrial/process control networks
  • Level translators (i.e., RS-232 to RS-485)

ISL32704EVAL1Z Isolated RS-485 Transceiver Eval Board

ISL32704EVAL1Z Isolated RS-485 Transceiver Eval Board

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Tools Orderable Part Number (s) Production Status Manufacturer Suggested Single Tool Price
Description Distributor Stock Distributors Distributor Purchase
ISL32704EVAL1Z 量産中 Renesas $96.67 1 4 Mouser
2 Newark


Disclaimer: THIS MATERIAL IS PROVIDED “AS-IS” FOR EVALUATION PURPOSES ONLY. RENESAS ELECTRONICS CORPORATION AND ITS SUBSIDIARIES (collectively, “Renesas”) DISCLAIM ALL WARRANTIES, INCLUDING WITHOUT LIMITATION, FITNESS FOR A PARTICULAR PURPOSE AND MERCHANTABILITY. Renesas provides evaluation platforms and design proposals to help our customers to develop products. However, factors beyond Renesas' control, including without limitation, component variations, temperature changes and PCB layout, could significantly affect the product performance. It is the user’s responsibility to verify the actual circuit performance.