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DS2705

Maxim Integrated Products
Part Number DS2705
Manufacturer Maxim Integrated Products
Description SHA-1 Authentication Master
Published Sep 21, 2007
Detailed Description www.DataSheet4U.com DS2705 SHA-1 Authentication Master www.maxim-ic.com GENERAL DESCRIPTION The DS2705 provides the ma...
Datasheet PDF File DS2705 PDF File

DS2705
DS2705

Overview
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.
The DS2705 works in conjunction with Dallas Battery Management SHA-1 token products, including the DS2703 and DS2704.
PIN CONFIGURATION CHAL PASS FAIL 1 2 3 4 8 7 6 5 VDD MDQ SDQ VPP VSS mMAX 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) APPLICATIONS Digital Cameras Portable DVD and Media Players Cradle and Accessory Chargers Cell Phones/Smartphones § § § § APPLICATION EXAMPLE ORDERING INFORMATION PART DS2705U+ DS2705U+/T&R TEMP RANGE MARKING DS2705 DS2705 PIN-PACKAGE mMAX DS2705U+ in Tape-and-Reel -40°C to +85°C -40°C to +85°C + Denotes lead-free package.
1-Wire is a registered trademark of Dallas Semiconductor.
1 of 18 050506 DS2705: SHA-1 Authentication Master ABSOLUTE MAXIMUM RATINGS Voltage Range on All Pins (except VPP), Relative to VSS Voltage Range on VPP Pin, Relative to VSS Continuous Source Current, MDQ Operating Temperature Range Storage Temperature Range Soldering Temperature -0.
3V to +5.
5V -0.
3V to +18V 20mA -40°C to +85°C -55°C to +125°C See IPC/JEDEC J-STD-020A Specifi...


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