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DS2705 - SHA-1 Authentication Master

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.

Key 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).

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www.DataSheet4U.com DS2705 SHA-1 Authentication Master www.maxim-ic.com 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-WireÒ 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-andresponse pair in nonvolatile (NV) EEPROM.