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DS2705UT Datasheet(PDF) 1 Page - Maxim Integrated Products |
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DS2705UT Datasheet(HTML) 1 Page - Maxim Integrated Products |
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1 / 18 page  1 of 18 050506 GENERAL DESCRIPTION The DS2705 provides the master side of a Secure Hash Algorithm (SHA) based token authentication scheme. Hardware-based SHA authentication allows for security without the added cost and complexity of a microprocessor-based system. Batteries and other accessories are authenticated using a single contact through the Dallas 1-Wire Ò interface. Authentication is performed on demand or automatically, with the pass/fail status reported on open-drain output pins to signal the charge system and/or drive LEDs. The DS2705 stores a predetermined challenge-and- response pair in nonvolatile (NV) EEPROM. The DS2705 works in conjunction with Dallas Battery Management SHA-1 token products, including the DS2703 and DS2704. APPLICATIONS Digital Cameras Portable DVD and Media Players Cradle and Accessory Chargers Cell Phones/Smartphones PIN CONFIGURATION FEATURES § Initiates Challenge-and-Response Authentication based on the SHA-1 Algorithm § Dallas 1-Wire Master/Slave Interface Operates at Standard and Overdrive Speeds § Input and Output pins for Initiating Challenge and Reporting Authentication Pass/Fail § Programmable Configuration § Operates from 2.5V to 5.5V Supply § Tiny mMAX Package (Pb-Free) APPLICATION EXAMPLE ORDERING INFORMATION PART TEMP RANGE MARKING PIN-PACKAGE DS2705U+ -40°C to +85°C DS2705 mMAX DS2705U+/T&R -40°C to +85°C DS2705 DS2705U+ in Tape-and-Reel DS2705 SHA-1 Authentication Master www.maxim-ic.com mMAX PASS VDD MDQ SDQ VPP VSS FAIL CHAL 6 8 7 5 3 1 2 4 + Denotes lead-free package. 1-Wire is a registered trademark of Dallas Semiconductor. |
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