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.
Key Features
Applications/Uses
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
Notes: **This pricing is BUDGETARY, for comparing similar parts. Prices are in
U.S. dollars and subject to change. Quantity pricing may vary
substantially and international prices may differ due to local
duties, taxes, fees, and exchange rates. For volume-specific prices
and delivery, please see the price and availability page
or contact an authorized distributor.
* Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.
Devices:
1-1
of
1
DS2705
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Package:
TYPE PINS FOOTPRINT
DRAWING CODE/VAR *
Temp
RoHS/Lead-Free? Materials Analysis
DS2705U+
µMAX;8 pin;16 mm²
Outline Drawing: 21-0036 (PDF)
Land Pattern: 90-0092 (PDF)
Use pkgcode/variation: U8+1*
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