Datasheet > DS2703U+T

DS2703U+T

更新时间： 2024-11-22 21:55:03

品牌	Logo	应用领域
达拉斯 - DALLAS		电池
页数	文件大小	规格书
20页	238K
描述
SHA-1 Battery Pack Authentication IC

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DS2703U+T 数据手册

DS2703

SHA-1 Battery Pack

Authentication IC

www.maxim-ic.com

GENERAL DESCRIPTION

FEATURES

The DS2703 provides a robust cryptographic solution

to ensure the authenticity of Li-Ion battery packs for

cell phone, PDA, and portable computing devices.

The DS2703 employs the Secure Hash Algorithm

(SHA-1) specified in the Federal Information

publication 180-1 and 180-2, and ISO/IEC 10118-3.

SHA-1 is designed for authenticationZjust what is

required for identifying battery packs manufactured

by authorized sources.

Cꢀ Secure Challenge and Response Authentication

Using the SHA-1 Algorithm

Cꢀ Directly Powered by the Dallas 1-Wire^®Interface

with 16kpbs Standard and 143kpbs Overdrive

Communication Modes

Cꢀ Unique 64-Bit Serial Number

Cꢀ Thermistor Multiplexer

Cꢀ Operates with V_PULLUPas Low as 2.7V

Cꢀ ꢀMax-8 Package (Lead-Free)

The device’s SHA-1 engine processes a host

transmitted challenge using its stored 64-bit secret

key and unique 64-bit ROM ID to produce a 160-bit

response word for transmission back to the host. The

secret key is securely stored on-chip and never

transmitted between the battery and the host. A

DS2703-based system produces a high degree of

authentication security between a host system and its

removable battery or other peripheral devices.

ORDERING INFORMATION

PART

TEMP RANGE

PIN-PACKAGE

DS2703U

-20LC to +70LC

ꢀMax-8

DS2703U on

Tape-and-Reel

DS2703U/T&R

DS2703U+

-20LC to +70LC

ꢀMax-8

DS2703U+ on

Tape-and-Reel

DS2703U+T&R

+ Denotes lead-free package.

The Thermistor Multiplexer feature allows a three

contact battery pack configuration to support data

and thermistor functions. When activated through

1-Wire command, the THM pin presents the

thermistor impedance on the data contact and

disconnects internal loading from the node.

APPLICATIONS

2.5G/3G Wireless Handsets

PDAs

Handheld or Notebook Computers and Terminals

Digital Still and Video Cameras

PIN CONFIGURATION

TYPICAL OPERATING CIRCUIT

TOP VIEW

BATTERY PACK

PACK +

THM

VSS

DS2703

ꢀMAX

DS2703U+

150ꢀ

DATA

0.22ꢁF

THM

VSS

Li-Ion

Protection

PACK -

1-Wire is a registered trademark of Dallas Semiconductor.

Note: Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revisions of any device

may be simultaneously available through various sales channels. For information about device errata, click here: www.maxim-ic.com/errata.

1 of 20

REV: 071805

12 3 4 5 6 7...20

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与DS2703U+T相关器件

型号	品牌	获取价格	描述	数据表
DS2703U+T&R	MAXIM	获取价格	Power Supply Support Circuit, Fixed, 1 Channel, PDSO8, LEAD FREE, MICRO, SOP-8
DS2703UR	DALLAS	获取价格	SHA-1 Battery Pack Authentication IC
DS2703UT	DALLAS	获取价格	SHA-1 Battery Pack Authentication IC
DS2703UTR	MAXIM	获取价格	SHA-1 Battery Pack SHA-1 Battery Pack
DS2704	MAXIM	获取价格	1280-Bit EEPROM with SHA-1 Authentication
DS2704	ADI	获取价格	1280位EEPROM，带有SHA-1认证
DS2704G+	MAXIM	获取价格	1280-Bit EEPROM with SHA-1 Authentication
DS2704G+T&R	MAXIM	获取价格	EEPROM, 128X8, Serial, CMOS, LEAD FREE, 3 X 3 MM, DFN-6
DS2704G+T&R	MAXIM	获取价格	1280-Bit EEPROM with SHA-1 Authentication
DS2704G+TR	MAXIM	获取价格	1280-Bit EEPROM with SHA-1 Authentication

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