DS9490B USB iButton Adapter

► 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
► 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

- 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.

► Software Authorization - Protection against software piracy by tying software operation to the presence of iButton hardware.
► iButton Initialization and Download - Loggers like the Thermochron® can be missioned and downloaded. Monetary iButtons can be refilled with money.
► Demonstration - Demonstrate the features of iButtons or 1-Wire chips on personal computers.
► Development - Aid development of 1-Wire applications by providing a PC interface to verify device contents and state.