SHA-256 Coprocessor with Integrated 1-Wire Master Line Driver

Offloads Host Controller SHA-256 Processing, Provides Highly Secure Storage of System Private Secret

Overview

Technical Documents

Ordering Info

Status

Future Product

Description

The DS2465 is a SHA-256 coprocessor with built-in 1-Wire® master that provides the secure processing required by a host system to communicate with and operate attached 1-Wire SHA-256 slave devices. In addition, it performs protocol conversion between the I²C master and any attached 1-Wire SHA-256 slave. For 1-Wire line driving, internal user-adjustable timers relieve the system host processor from generating time-critical 1-Wire waveforms, supporting both standard and overdrive 1-Wire communication speeds. The 1-Wire line can be powered down under software control. Strong pullup features support 1-Wire power delivery to 1-Wire devices such as EEPROMs. When not in use, the DS2465 can be put in sleep mode where power consumption is minimal.

Data Sheet

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Key Features

SHA-256 Engine to Operate a Symmetric-Key-Based Bidirectional Secure Authentication Model
Two 32-Byte Pages of User EEPROM with Multiple Programmable Protection Options
1-Wire Master Port with Selectable Active or Passive 1-Wire Pullup
Strong 1-Wire Pullup Provided by an Internal Low-Impedance Signal Path
1-Wire Port Can Be Powered Down Under Software Control
I²C Operating (Pullup) Voltage: 3.3V ±10%
ESD Protection of ±8kV HBM (typ) on 1-Wire IO Pin
Operating Range: 3.3V ±10%, -40°C to +85°C

Applications/Uses

Identification and authentication of consumables
Reference Design License Management
Sensor/Accessory Authentication and Calibration
System Intellectual Property Protection

Reliability Reports

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Software/Models

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Ordering Information

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Tape and Reel

Sample

Part Number	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
DS2465P+		N/A	Future Product	TSOC;6 pin;17.8 mm² Outline Drawing:21-0382 (PDF) Land Pattern: 90-0321 (PDF) Use pkgcode/variation: D6+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS2465P+T		N/A	Future Product	TSOC;6 pin;17.8 mm² Outline Drawing:21-0382 (PDF) Land Pattern: 90-0321 (PDF) Use pkgcode/variation: D6+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis

Notes:

Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product Naming Conventions.
* 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.

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Information Index

Overview		Technical Documents		Ordering Info		Related Products
Description Key Features Applications/Uses Key Specifications Diagram Notes and Comments		Data Sheet Application Notes Evaluation Kits Product Guides Reliability Reports Software/Models		Price and Availability Samples Buy Online Package Information Lead-Free Information		Similar Products by Function Similar Products by Application Evaluation Kits Products with Similar Part Numbers Products Used With This

This page last modified: 2011-11-01