DS9490

Manufacturer Part NumberDS9490
DescriptionDs9490, Ds9490b, Ds9490r Usb To 1-wire/ibutton Adapter
ManufacturerMaxim Integrated Products, Inc.
DS9490 datasheet
 
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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
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.
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
the iButton website under software support at:
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.
USB to 1-Wire/iButton Adapter
TYPICAL OPERATING CIRCUIT
®
ORDERING INFORMATION
PART
DS9490B
DS9490R
DS9490B# USB Single F5 iButton Holder
®
can be
DS9490R# USB to 1-Wire RJ11
# Denotes RoHS compliance
PACKAGING/SHIPPING
INFORMATION
The part is shipped individually in an anti-static
bag.
®
98, Windows 2000, Windows ME, and Windows XP can be found on
http://www.ibutton.com/software/tmex/index.html
1 of 5
DS9490R/DS9490B
USB
PC
DS9490B
iButton
USB
PC
DS9490R
DS1402D-DR8
DESCRIPTION
USB Single F5 iButton Holder
with Protective Cap
USB to 1-Wire RJ11
with Protective Cap
010507

DS9490 Summary of contents

  • Page 1

    ... 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 ...

  • Page 2

    ... Figure 1. DS9490R Figure 2. DS9490B *Note: To eject an iButton, insert a straightened paper clip into the side access hole of the DS9490B. Push the paper clip in the direction of the iButton. A different iButton can then be inserted. The data contact faces down and away from the embossed ‘i’. Before inserting the paper clip disconnect the DS9490B from the USB bus ...

  • Page 3

    ... PIN CONFIGURATION Figure 4. 1-WIRE RJ11 SOCKET FOR DS9490R SIGNAL PIN DESCRIPTION NAME 1 V 5VDC Output DD 2 GND Power Ground OW 1-Wire Data 3 GND_OW 1-Wire Return 4 SUSO USB Suspend Output 5 6 N.C. No Connection Figure 5. iBUTTON SOCKET FOR DS9490B SIGNAL PIN DESCRIPTION NAME OW 1-Wire Data ...

  • Page 4

    ... MECHANICAL DIMENSIONS All dimensions are in millimeters. Figure 6. DS9490R 3.12 Figure 7. DS9490B 24.94 16.54 ENVIRONMENTAL REQUIREMENTS CONDITION Storage Temperature Storage Relative humidity, noncondensing Storage Duration Operating Temperature Operating Relative humidity, noncondensing 11.66 42.65 13.89 56.82 PARAMETER 20.42 21.54 11.66 8.74 3.28 VALUE -10°C to +85°C 95% 1yr (max) at 95%RH and +85°C 0°C to +70°C 80% ...

  • Page 5

    ... See the DS2490 data sheet for the conditions where SUSO is active. Revision C of the DS9490R and all revisions of the DS9490R# have SUSO routed to the RJ11 connector. The availability of SUSO at the RJ11 connector is not production tested. Therefore, before relying on SUSO in an application, first verify the presence of this signal with the particular adapter ...