Memory Products
DS2401

DS2401

Silicon Serial Number


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.
DS2401: Pin Assignment DS2401: Pin Assignment Enlarge++

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
Part Number Memory Type Memory Size Bus Type Real Time Clock Pwr. Cap Pckg. GPIO VSUPPLY
(V)
VSUPPLY
(V)
Budgetary
Price
min max See Notes
DS2401  ROM 64bit x 1 1-Wire No No No 2.8 6 $0.62 @1k
See All Memory (EPROM, EEPROM, ROM, NV SRAM) (67)

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 and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.


DS9120:  Socket Boards for Evaluating 1-Wire Devices
DS9120P:  Socket Boards for Evaluating 1-Wire Devices
DS9120Q:  Socket Boards for Evaluating 1-Wire Devices

Technical Documents

App Note 27 Understanding and Using Cyclic Redundancy Checks with Maxim 1-Wire and iButton Products
App Note 74 Reading and Writing 1-Wire® Devices Through Serial Interfaces
App Note 126 1-Wire Communication Through Software
Tutorial 148 Guidelines for Reliable Long Line 1-Wire Networks
App Note 155 1-Wire Software Resource Guide Device Description
App Note 178 Printed Circuit Board Identification Using 1-Wire® Products
App Note 186 Creating Global Identifiers Using 1-Wire® Devices
App Note 187 1-Wire Search Algorithm
App Note 192 Using the DS2480B Serial 1-Wire® Line Driver
Tutorial 214 Using a UART to Implement a 1-Wire Bus Master
Reference Schematic 244 Advanced 1-Wire Network Driver
App Note 1097 White Paper 2: Using the 1-Wire® Public Domain Kit
App Note 1100 White Paper 5: Using 1-Wire APIs for Data Sheet Commands
App Note 3377 Maxim Wafer-Level Package Assembly Guide
Tutorial 3438 Serial Digital Data Networks
App Note 3967 Selecting a Serial Bus
App Note 3989 Add Control, Memory, Security, and Mixed-Signal Functions with a Single Contact
App 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
App Note 4717 Injection Molding an IC into a Connector or Consumable Item
App Note 5403 How to Build a 1-Wire® Evaluation Kit
App Note 5507 Understanding the DS1WM Synthesizable 1-Wire Bus Master
Reference Schematic 5508 Create a 1-Wire Master with Xilinx PicoBlaze

Quality and Environmental Data

Product Reliability Reports: DS2401.pdf 
Lead-Free Package Tin (Sn) Whisker Reports
 

Related Resources


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Type ID PDF Title
App Note 27 Understanding and Using Cyclic Redundancy Checks with Maxim 1-Wire and iButton Products
App Note 74 Reading and Writing 1-Wire® Devices Through Serial Interfaces
App Note 126 1-Wire Communication Through Software
Tutorial 148 Guidelines for Reliable Long Line 1-Wire Networks
App Note 155 1-Wire Software Resource Guide Device Description
App Note 178 Printed Circuit Board Identification Using 1-Wire® Products
App Note 186 Creating Global Identifiers Using 1-Wire® Devices
App Note 187 1-Wire Search Algorithm
App Note 192 Using the DS2480B Serial 1-Wire® Line Driver
Tutorial 214 Using a UART to Implement a 1-Wire Bus Master
Reference Schematic 244 Advanced 1-Wire Network Driver
App Note 1097 White Paper 2: Using the 1-Wire® Public Domain Kit
App Note 1100 White Paper 5: Using 1-Wire APIs for Data Sheet Commands
App Note 3377 Maxim Wafer-Level Package Assembly Guide
Tutorial 3438 Serial Digital Data Networks
App Note 3967 Selecting a Serial Bus
App Note 3989 Add Control, Memory, Security, and Mixed-Signal Functions with a Single Contact
App 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
App Note 4717 Injection Molding an IC into a Connector or Consumable Item
App Note 5403 How to Build a 1-Wire® Evaluation Kit
App Note 5507 Understanding the DS1WM Synthesizable 1-Wire Bus Master
Reference Schematic 5508 Create a 1-Wire Master with Xilinx PicoBlaze