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DS2506

64Kb Add-Only Memory

Overview

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Status

This product is Not Recommended for New Designs. Some versions may be No Longer Available or being discontinued and subject to Last Time Buy, after which new orders can not be placed. See Ordering Information for details.

Description

The DS2506 is a 64Kb 1-Wire® EPROM. Like all 1-Wire devices, the DS2506 consists of a factory-lasered 64-bit ROM registration number that includes a unique 48-bit serial number, an 8-bit CRC, and an 8-bit family code (0FH) plus 64Kb of user-programmable EPROM. The power to program and read the DS2506 is derived entirely from the 1-Wire communication line. Data is transferred serially via the 1-Wire protocol which requires only a single data lead and a ground return. The entire device can be programmed and then write protected if desired. Alternatively, the part may be programmed multiple times with new data being appended to, but not overwriting, existing data with each subsequent programming of the device. Note: Individual bits can be changed only from a logical 1 to a logical 0, never from a logical 0 to a logical 1.

Data Sheet

Download	Rev 1	(PDF, 900kB)
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Key Features

65,536 bits electrically programmable read only memory (EPROM)
Unique, factory-lasered and tested 64-bit registration number assures absolute traceability because no two parts are alike
Built-in multidrop controller ensures compatibility with other 1-Wire products
EPROM partitioned into 256-bit pages for randomly accessing packetized data records
Each memory page can be permanently write-protected to prevent tampering
Reduces control, address, data, power, and programming signals to a single data pin
Directly connects to a single port pin of a microprocessor and communicates at up to 16.3kbps
Overdrive mode boosts communication speed to 142kbps
Low-cost PR35 or 8-pin SO surface-mount package
Reads over a wide voltage range of 2.8V to 6.0V from -40°C to +85°C; programs at 11.5V to 12.0V from -40°C to +50°C

Application Notes

Application Note 27		Understanding and Using Cyclic Redundancy Checks with Maxim iButton Products
Application Note 155		1-Wire® Software Resource Guide Device Description
Application Note 178		Printed Circuit Board Identification Using 1-Wire® Products
Application Note 187		1-Wire Search Algorithm
Application Note 192		Using the DS2480B Serial 1-Wire® Line Driver
Reference Design 244		Advanced 1-Wire Network Driver
Application Note 2965		1-Wire® Master Device Configuration

Product Guides

1-Wire® Products (PDF)

Reliability Reports

Reliability Report:

DS2506.pdf

Software/Models

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Ordering Information

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Temperature:

Tape and Reel

Sample

Part Number	Free Sample	Buy	Status	Recommended Replacement	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
DS2506			NRND		TO92-E;3 pin;15.9 mm² Outline Drawing:21-0247 (PDF) Land Pattern: Not Applicable Use pkgcode/variation: D3-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
DS2506+			NRND		TO92-E;3 pin;15.9 mm² Outline Drawing:21-0247 (PDF) Land Pattern: Not Applicable Use pkgcode/variation: D3+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS2506S+			NRND		SOIC;8 pin;44.1 mm² Outline Drawing:21-0262 (PDF) Land Pattern: 90-0258 (PDF) Use pkgcode/variation: W8+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS2506S+T&R		N/A	No Longer Available	DS2506S+T&R	SOIC;8 pin;44.1 mm² Outline Drawing:21-0262 (PDF) Land Pattern: 90-0258 (PDF) Use pkgcode/variation: W8+4*	-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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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

Rev 1; 2000-06-27
This page last modified: 2008-08-01