DS9490R Datasheet | Maxim Integrated

FEATURES - High-Speed 12Mbps Universal Serial Bus (USB) Interface - Supports Standard and Overdrive 1-Wire® munication - 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 i Button® Interface and Retains a Fixed i Button - Built-In Custom DS2401 Identification Chip - Reads all 1-Wire and i Button Devices. Writes All Except EPROM 1-Wire/i Button Devices APPLICATIONS - Software Authorization- Protection against software piracy by tying software operation to the presence of i Button hardware. - i Button Initialization and Download- Loggers like the Thermochr Foun®nccatniboenmailss Dioinaedgarnadms downloaded. - Demonstration- Demonstrate the features of i Buttons or 1-Wire chips on personal puters. - Development- Aid development of 1-Wire applications by providing a PC interface to verify device contents and state. TYPICAL OPERATING CIRCUIT PC USB DS9490B i Button PC USB DS9490R DS1402D-DR8 ORDERING INFORMATION PART TYPE DS9490B# USB Single F5 i Button Holder with Protective Cap DS9490R# USB-to-1-Wire RJ11 #Denotes a Ro HS-pliant device that may include lead(Pb) that is exempt under the Ro HS 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 i Button. The i Button is securely held behind a latched door. The DS9490R is a USB bridge with 1-Wire RJ11 interface to acmodate 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 ww Piwn C.monafixgiumra-tiiocn.scoapmp/e1ar-Wat einrdedorf idvaetarssh. eet. Functional Diagrams continued at end of data sheet. 1-WUir Ce,Si...