DS9490B：USB to 1-Wire/iButton Adapter
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
| DS9490B, DS9490R: Typical Operating Circuit.Applications/Uses- iButton Initialization and Download
- Demonstration
- Development
- Software Authorization
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DataSheet
Parametrics
| Part Number | Overview | Budgetary
Price |
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| See Notes |
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| DS9490B | DS9490B USB iButton Holder | $18.32 @1k |
| DS9490R | USB to 1-Wire RJ11 | $20.23 @1k |
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Related Products
Ordering Information
| Part Number | Status | Recommended Replacement | Package | Temp | RoHS |
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| DS9490B# | Active | | IBACC; | 0°C to +70°C | |
