Maxim > Products > 1-Wire® Devices > DS2401

DS2401

Silicon Serial Number

Overview

Technical Documents

Ordering Info

Status

Part Number	Status
DS2401	Active: In Production. See Ordering Information for details.

Description

The DS2401 enhanced Silicon Serial Number is a low-cost, electronic registration number that provides an absolutely unique identity which can be determined with a minimal electronic interface (typically, a single port pin of a microcontroller). The DS2401 consists of a factory-lasered, 64-bit ROM that includes a unique 48-bit serial number, an 8-bit CRC, and an 8-bit Family Code (01h). Data is transferred serially via the 1-Wire® protocol that requires only a single data lead and a ground return. Power for reading and writing the device is derived from the data line itself with no need for an external power source. The DS2401 is an upgrade to the DS2400. The DS2401 is fully reverse-compatible with the DS2400 but provides the additional multi-drop capability that enables many devices to reside on a single data line. The familiar TO-92, SOT-223 or TSOC package provides a compact enclosure that allows standard assembly equipment to handle the device easily.

Data Sheet

Download	Rev 3	(PDF, 336kB)
E-Mail

An evaluation kit is available: DS9090K DS9120, DS9120P, DS9120Q

Key Features

Upgrade and Drop-In Replacement for DS2400
- Extended 2.8 to 6.0 Voltage Range
- Multiple DS2401s Can Reside on a Common 1-Wire Net
Unique, Factory-Lasered and Tested 64-Bit Registration Number (8-Bit Family Code + 48-Bit Serial Number + 8-Bit CRC Tester); Guaranteed No Two Parts Alike
Built-In Multidrop Controller Ensures Compatibility with Other 1-Wire Net Products
8-Bit Family Code Specifies DS2401 Communications Requirements to Reader
Presence Pulse Acknowledges When the Reader First Applies Voltage
Low-Cost TO-92, SOT-223, and TSOC Surface Mount Packages
Reduces Control, Address, Data, and Power to a Single Pin
Zero Standby Power Required
Directly Connects to a Single Port Pin of a Microprocessor and Communicates at Up to 16.3kbps
TO-92 Tape & Reel Version with Leads Bent to 100mil Spacing (Default) or with Straight Leads (DS2401T-SL)
-40°C to +85°C Industrial Temperature Range

Applications/Uses

Equipment Registration
Network-Node Identification
PCB Identification
Reference Design License Management

Key Specifications:

Memory (EPROM, EEPROM, ROM, NV SRAM)

Part Number

Memory Type

Memory Size

Bus Type

Real Time Clock

Pwr. Cap Pckg.

GPIO

V_SUPPLY
(V)

Budgetary Price

min

max

See Notes

DS2401

ROM

64bit x 1

1-Wire

2.8

$0.54 @1k

See All Memory (EPROM, EEPROM, ROM, NV SRAM) (58)

Pricing 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.

Diagram

Pin Assignment

Application Notes

Application Note 27		Understanding and Using Cyclic Redundancy Checks with Maxim iButton Products
Application Note 74		Reading and Writing 1-Wire® Devices Through Serial Interfaces
Application Note 126		1-Wire® Communication Through Software
Tutorial 148		Guidelines for Reliable Long Line 1-Wire® Networks
Application Note 155		1-Wire® Software Resource Guide Device Description
Application Note 178		Printed Circuit Board Identification Using 1-Wire® Products
Application Note 186		Creating Global Identifiers Using 1-Wire® Devices
Application Note 187		1-Wire Search Algorithm
Application Note 192		Using the DS2480B Serial 1-Wire® Line Driver
Tutorial 214		Using a UART to Implement a 1-Wire Bus Master
Reference Design 244		Advanced 1-Wire Network Driver
Application Note 1097		White Paper 2: Using the 1-Wire® Public Domain Kit
Application Note 1100		White Paper 5: Using 1-Wire APIs for Data Sheet Commands
Application Note 3377		Maxim Wafer-Level Package Assembly Guide
Tutorial 3438		Serial Digital Data Networks
Application Note 3967		Selecting a Serial Bus
Application Note 3989		Add Control, Memory, Security, and Mixed-Signal Functions with a Single Contact
Application Note 4002		Understanding Flip-Chip and Chip-Scale Package Technologies and Their Applications
Tutorial 4702		Easily Add Memory, Security, Monitoring, and Control to Medical Sensors and Consumables
Application Note 4717		Injection Molding an IC into a Connector or Consumable Item

Product Guides

1-Wire® Products (PDF)

Reliability Reports

Reliability Report:

DS2401.pdf

Software/Models

none

Ordering Information

Filters:

Part Number:

Package:

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
DS2401		N/A	No Longer Available		TO92;3 pin;19.5 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
DS2401+			Active		TO92;3 pin;19.5 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
DS2401+T&R			Active		TO92;3 pin;27.6 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
DS2401-SL+T&R			Active		TO92;3 pin;19.5 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
DS2401/T&R		N/A	No Longer Available		TO92;3 pin;27.6 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
DS2401/T&R/SL		N/A	No Longer Available		TO92;3 pin;19.5 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
DS2401AP-02B-06/FUJITSU		N/A	No Longer Available		TSOC; Land Pattern: Not Available	-40°C to +85°C	See data sheet
DS2401AP-02B-09/T&R		N/A	No Longer Available		TSOC; Land Pattern: Not Available	-40°C to +85°C	See data sheet
DS2401AP-044-0962		N/A	No Longer Available		TSOC; Land Pattern: Not Available	-40°C to +85°C	See data sheet
DS2401P		N/A	No Longer Available		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: No Materials Analysis
Part Number	Free Sample	Buy	Status	Recommended Replacement	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
DS2401P+			Active		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
DS2401P+T&R			Active		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
DS2401P-Z02/T&R		N/A	No Longer Available	DS2401P+T&R	TSOC; Land Pattern: Not Available	-40°C to +85°C	See data sheet
DS2401X1			Active		CSP;2 pin;1 mm² Outline Drawing:21-0378 (PDF) Land Pattern: Not Applicable Use pkgcode/variation: BF211-1*	-40°C to +85°C	RoHS/Lead-Free: RoHS Qualified Materials Analysis
DS2401X1#U			Active		CSP;2 pin;1 mm² Outline Drawing:21-0378 (PDF) Land Pattern: Not Applicable Use pkgcode/variation: BF211-1*	-40°C to +85°C	RoHS/Lead-Free: RoHS Qualified Materials Analysis
DS2401X1-S#T			Active		CSP;2 pin;1 mm² Outline Drawing:21-0378 (PDF) Land Pattern: Not Applicable Use pkgcode/variation: BF211#1*	-40°C to +85°C	See data sheet
DS2401Z+			Active		SOT-223;3 pin;48.9 mm² Outline Drawing:21-0264 (PDF) Land Pattern: Not Available Use pkgcode/variation: K3+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS2401Z+T&R			Active		SOT-223;3 pin;48.9 mm² Outline Drawing:21-0264 (PDF) Land Pattern: Not Available Use pkgcode/variation: K3+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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Evaluation Kits

DS9090K	1-Wire Device Evaluation Kit Rev B4
DS9120, DS9120P, DS9120Q	Socket Boards for Evaluating 1-Wire Devices

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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

Document Ref.: 19-5860 Rev 3; 2011-05-19
This page last modified: 2011-05-19