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DS9490B

Maxim Integrated
Part Number DS9490B
Manufacturer Maxim Integrated
Description USB to 1-Wire/iButton Adapters
Published Mar 26, 2020
Detailed Description AVAILABLE DS9490R/DS9490B USB to 1-Wire/iButton Adapters FEATURES  High-Speed 12Mbps Universal Serial Bus (USB) Inter...
Datasheet PDF File DS9490B PDF File

DS9490B
DS9490B

Overview
AVAILABLE DS9490R/DS9490B USB to 1-Wire/iButton Adapters 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 ThermochrFoun®nccatniboenmailssDioinaedgarnadms downloaded.
 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 TYPE DS9490B# USB Single F5 iButton Holder with Protective Cap DS9490R# USB-to-1-Wire RJ11 #Denotes a RoHS-compliant device that may include lead(Pb) that is exempt under the RoHS requirements.
PACKAGING/SHIPPING INFORMATION The part is shipped individually in an antistatic 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.
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-to1-Wire bridge chip.
Free software drivers for Windows®-based PCs can be downloaded from wwPiwn C.
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