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USB to 1-Wire/iButton Adapter

Product Details

The DS9490B is a USB bridge and holder for a single F5-size iButton®. The iButton is securely held behind a latched door. The DS9490R is a USB bridge with 1-Wire® RJ11 interface to accommodate 1-Wire receptacles and networks. For a list of suitable 1-Wire network cables, refer to the Connectivity Matrix table in the DS1402x 1-Wire network cables data sheet. Both adapters are based on the DS2490 USB-to-1-Wire bridge chip. Free software drivers for Windows®-based PCs can be downloaded from www.maximintegrated.com/1-Wiredrivers.

Key Features

  • High-Speed 12Mbps Universal Serial Bus (USB) Interface
  • Supports Standard and Overdrive 1-Wire Communication
  • Slew-Rate-Controlled 1-Wire Timing and Active Pullup for Improved 1-Wire Network Performance
  • DS9490R has an RJ11 Interface for Standard Connectivity Accessories such as the DS1402D-DR8
  • DS9490B has an iButton Interface and Retains a Fixed iButton
  • Built-In Custom DS2401 Identification Chip
  • Reads all 1-Wire and iButton Devices. Writes All Except EPROM 1-Wire/iButton Devices

Applications/Uses

  • iButton Initialization and Download
  • Demonstration
  • Development
  • Software Authorization
Parametric specs for iButton Readers and Adapters
Features F5 Package Compatible
Permanently/Semi-permanently Retains an iButton
USB Port
USB Port Adapters
With ID
Overview
DS9490B USB iButton Holder
Budgetary
Price (See Notes)
$20.00 @1k
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Simplified Block Diagram

DS9490B, DS9490R: Typical Operating Circuit. DS9490B, DS9490R: Typical Operating Circuit. Zoom icon

Technical Docs

Design & Development

Click any title below to view the detail page where available.

Additional Resources
Software Authorization Kit (a free software development kit with source)
Software Authorization Kit (a free software development kit with source)
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Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal

Parameters

Parametric specs for iButton Readers and Adapters
Features F5 Package Compatible
Permanently/Semi-permanently Retains an iButton
USB Port
USB Port Adapters
With ID
Overview
DS9490B USB iButton Holder
Budgetary
Price (See Notes)
$20.00 @1k

Key Features

  • High-Speed 12Mbps Universal Serial Bus (USB) Interface
  • Supports Standard and Overdrive 1-Wire Communication
  • Slew-Rate-Controlled 1-Wire Timing and Active Pullup for Improved 1-Wire Network Performance
  • DS9490R has an RJ11 Interface for Standard Connectivity Accessories such as the DS1402D-DR8
  • DS9490B has an iButton Interface and Retains a Fixed iButton
  • Built-In Custom DS2401 Identification Chip
  • Reads all 1-Wire and iButton Devices. Writes All Except EPROM 1-Wire/iButton Devices

Applications/Uses

  • iButton Initialization and Download
  • Demonstration
  • Development
  • Software Authorization

Description

The DS9490B is a USB bridge and holder for a single F5-size iButton®. The iButton is securely held behind a latched door. The DS9490R is a USB bridge with 1-Wire® RJ11 interface to accommodate 1-Wire receptacles and networks. For a list of suitable 1-Wire network cables, refer to the Connectivity Matrix table in the DS1402x 1-Wire network cables data sheet. Both adapters are based on the DS2490 USB-to-1-Wire bridge chip. Free software drivers for Windows®-based PCs can be downloaded from www.maximintegrated.com/1-Wiredrivers.

Simplified Block Diagram

DS9490B, DS9490R: Typical Operating Circuit. DS9490B, DS9490R: Typical Operating Circuit. Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal