Features and Benefits

  • Driver Support for Windows® 11 and Windows 10 Operating Systems
  • Enumerates as a Virtual PC COM Port by Use of the Prolific PL-2303GC USB-to-UART Bridge IC
  • Emulates the DS2480B 1-Wire Line Driving Functionality
  • 1-Wire EEPROM Programming
  • 1.8V Read/Write Operation to 1-Wire/iButton Devices
  • RJ11 Interface for Standard Connectivity Accessories such as the DS9120 Family of Socket Adapters
  • Supports Standard and Overdrive 1-Wire Communication
  • Provides Strong Pullup to 1.8V
  • Fully Compliant with USB 2.0 Specification

Product Details

The DS9481R-200 is a USB-to-1-Wire® adapter for easy PC connectivity to 1-Wire devices. The adapter provides an RJ11 connector with the signals to communicate with all 1-Wire and iButton® devices that support a 1.8V data I/O level. Additionally, the adapter provides the support and signaling to program 1-Wire/iButton EEPROM devices. To provide a total hardware solution, the DS9481R-200 can readily be used with the family of DS9120 socket adapters to create a 1-Wire PC programmer for 1-Wire peripheral devices (contact factory for more information). The equivalent peripheral hardware solution for the iButton is the DS1402D-DR8.


  • Identification and authentication of consumables
  • Reference Design License Management
  • Sensor/Accessory Authentication and Calibration
  • System Intellectual Property Protection

Documentation & Resources