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Status
Part Number	Status
DS2431	Active: In Production. But some versions of the family are No Longer Available. See Ordering Information.

Data Sheet

FULL DATA SHEET (PDF, 308kB) Download   E-Mail

Description

The DS2431 is a 1024-bit, 1-Wire® EEPROM chip organized as four memory pages of 256 bits each. Data is written to an 8-byte scratchpad, verified, and then copied to the EEPROM memory. As a special feature, the four memory pages can individually be write protected or put in EPROM-emulation mode, where bits can only be changed from a 1 to a 0 state. The DS2431 communicates over the single-conductor 1-Wire bus. The communication follows the standard 1-Wire protocol. Each device has its own unalterable and unique 64-bit ROM registration number that is factory lasered into the chip. The registration number is used to address the device in a multidrop, 1-Wire net environment.

An evaluation kit is available:  DS9090K  

Key Features		Applications/Uses
1024 Bits of EEPROM Memory Partitioned into Four Pages of 256 Bits Individual Memory Pages can be Permanently Write Protected or Put in EPROM-Emulation Mode ("Write to 0") Switchpoint Hysteresis and Filtering to Optimize Performance in the Presence of Noise IEC 1000-4-2 Level 4 ESD Protection (±8kV Contact, ±15kV Air, typical) Reads and Writes Over a Wide Voltage Range of 2.8V to 5.25V from -40°C to +85°C Communicates to Host with a Single Digital Signal at 15.4kbps or 125kbps Using 1-Wire Protocol Also Available as Automotive Version Meeting AEC-Q100 Grade 1 Qualification Requirements (DS2431-A1)		Accessory/PC Board Identification After-Market Management of Consumables Analog Sensor Calibration Including IEEEP 1451.4 Smart Sensors Ink and Toner Print Cartridge Identification Medical Sensor Calibration Data Storage

Diagram

Typical Operating Circuit

Application Notes

Application Note 27: Understanding and Using Cyclic Redundancy Checks with Maxim iButton Products - DS2431 Application Note 74: Reading and Writing 1-Wire® Devices Through Serial Interfaces - DS2431 Application Note 114: 1-Wire File Structure - DS2431 Application Note 126: 1-Wire® Communication Through Software - DS2431 Application Note 148: Guidelines for Reliable Long Line 1-Wire® Networks - DS2431 Application Note 155: 1-Wire® Software Resource Guide Device Description - DS2431 Application Note 187: 1-Wire Search Algorithm - DS2431 Application Note 192: Using the DS2480B Serial 1-Wire Line Driver - DS2431 Application Note 1097: White Paper 2: Using the 1-Wire® Public Domain Kit - DS2431 Application Note 1100: White Paper 5: Using 1-Wire APIs for Data Sheet Commands - DS2431 Application Note 2420: 1-Wire Communication with a Microchip PICmicro Microcontroller - DS2431 Application Note 2965: 1-Wire® Master Device Configuration - DS2431 Application Note 2966: Minimal Remote 1-Wire® Master Protocol - DS2431 Application Note 3438: Serial Digital Data Networks - DS2431 Application Note 3697: Transition Guide: Replacing the DS2430A with the DS2431 - DS2431 Application Note 3989: Add Control, Memory, Security, and Mixed-Signal Functions with a Single Contact - DS2431 Application Note 4002: Understanding Flip-Chip and Chip-Scale Package Technologies and Their Applications - DS2431 Application Note 4132: Attachment Methods for the Electro-Mechanical SFN Package - DS2431 Application Note 4255: How to Power the Extended Features of 1-Wire® Devices - DS2431 Application Note 4477: Reference Design of a 1-Wire® Bidirectional Voltage-Level Translator for 1.8V to 5V - DS2431 Application Note 4623: Smart Cable Aids Quality Control and Authentication - DS2431

Evaluation Kits

DS9090K

Design Guides

1-Wire® Products (PDF)

Reliability Reports

Reliability Report: DS2431.pdf

Software/Models

none

Ordering Information

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. More: SeeFull Data Sheet or Part 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.

Devices: 1-12 of 12

DS2431	Free Sample	Buy	Status	Recommended Replacement	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
DS2431G+T&R			Active		SFN;2 pin;0 mm² Outline Drawing: 21-0390 (PDF) Land Pattern: Not Applicable Use pkgcode/variation: G266N+1*	-40°C to +85°C	See data sheet
DS2431G+U			Active		SFN;2 pin;0 mm² Outline Drawing: 21-0390 (PDF) Land Pattern: Not Applicable Use pkgcode/variation: G266N+1*	-40°C to +85°C	See data sheet
DS2431X+U			Active		UCSPR;6 pin;3 mm² Outline Drawing: 21-0376 (PDF) Land Pattern: Not Available Use pkgcode/variation: BR622+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS2431Q+T&R			Active		TDFN-EP;6 pin;10 mm² Outline Drawing: 21-0137 (PDF) Land Pattern: 90-0058 (PDF) Use pkgcode/variation: T633+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS2431		N/A	No Longer Available		TO92;3 pin;20 mm² Outline Drawing: 21-0248 (PDF) Land Pattern: Not Applicable Use pkgcode/variation: Q3-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
DS2431/T&R		N/A	No Longer Available	DS2431+	TO92;3 pin;28 mm² Outline Drawing: 21-0250 (PDF) Land Pattern: Not Applicable Use pkgcode/variation: Q3-4*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
DS2431+T&R			Active		TO92;3 pin;28 mm² Outline Drawing: 21-0250 (PDF) Land Pattern: Not Applicable Use pkgcode/variation: Q3+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS2431+			Active		TO92;3 pin;20 mm² Outline Drawing: 21-0248 (PDF) Land Pattern: Not Applicable Use pkgcode/variation: Q3+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS2431P/T&R		N/A	No Longer Available	DS2431P+	TSOC;6 pin;18 mm² Outline Drawing: 21-0382 (PDF) Land Pattern: 90-0321 (PDF) Use pkgcode/variation: D6-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
DS2431P		N/A	No Longer Available	DS2431P+	TSOC;6 pin;18 mm² Outline Drawing: 21-0382 (PDF) Land Pattern: 90-0321 (PDF) Use pkgcode/variation: D6-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
DS2431P+			Active		TSOC;6 pin;18 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
DS2431P+T&R			Active		TSOC;6 pin;18 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

More Information

New Product Press Release 2004-05-11  Product Ad: Download Product Family Ad: Download Product Family Ad: Download

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Technical Documents

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Description   Key Features   Applications/Uses   Key Specifications   Diagram

Data Sheet   Application Notes   Design Guides   Engineering Journals   Reliability Reports   Software/Models   Evaluation Kits

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