Datasheet > DS2705U+

DS2705U+

更新时间： 2024-11-26 02:51:07

品牌	Logo	应用领域
达拉斯 - DALLAS		/
页数	文件大小	规格书
18页	340K
描述
SHA-1 Authentication Master

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中文翻译

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数据手册

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DS2705U+ 数据手册

DS2705

SHA-1 Authentication Master

www.maxim-ic.com

GENERAL DESCRIPTION

PIN CONFIGURATION

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® 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.

VDD

MDQ

SDQ

VPP

CHAL

PASS

FAIL

VSS

μMAX

FEATURES

Initiates Challenge-and-Response

Authentication based on the SHA-1 Algorithm

Dallas 1-Wire Master/Slave Interface Operates

at Standard and Overdrive Speeds

APPLICATIONS

Input and Output pins for Initiating Challenge

and Reporting Authentication Pass/Fail

Digital Cameras

Portable DVD and Media Players

Cradle and Accessory Chargers

Cell Phones/Smartphones

Programmable Configuration

Operates from 2.5V to 5.5V Supply

Tiny μMAX Package (Pb-Free)

APPLICATION EXAMPLE

ORDERING INFORMATION

PART

TEMP RANGE

-20°C to +85°C

MARKING

D2705

PIN-PACKAGE

μMAX

DS2705U+

DS2705U+/T&R

D2705

DS2705U+ in Tape-and-Reel

+ Denotes lead-free package.

1-Wire is a registered trademark of Dallas Semiconductor.

1 of 18

080207

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