DS9490B Datasheet, PDF (1/5 Pages) Dallas Semiconductor – USB to 1-Wire/iButton Adapter

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DS9490R/DS9490B
USB to 1-Wire/iButton Adapter
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
§ 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.
TYPICAL OPERATING CIRCUIT
PC ^USB
DS9490B _iButton
PC
USB
DS9490R
DS1402D-DR8
ORDERING INFORMATION
PART
DS9490B
DS9490R
DESCRIPTION
USB Single F5 iButton Holder
with Protective Cap
USB to 1-Wire RJ11
PACKAGING/SHIPPING
INFORMATION
The part is shipped individually in an anti-static
bag.
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. The DS1402D-DR8 (Blue Dot™) can readily be used in conjunction with
the DS9490R to create an iButton PC reader. Both adapters are based on the DS2490 USB to 1-Wire
bridge chip.
PC software drivers for Windows^® 98, Windows 2000, Windows ME, and Windows XP can be found on
the iButton website under software support at: http://www.ibutton.com/software/tmex/index.html
1-Wire, iButton, and Thermochron are registered trademarks of
Dallas Semiconductor.
Blue Dot is a trademark of Dallas Semiconductor.
Windows is a registered trademark of Micosoft Corp.
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