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DS2401
iButton and 1-Wire Memory DS2401
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DS2401

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Silicon Serial Number

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Product Details

See parametric specs for Memory (EPROM, EEPROM, ROM, NV SRAM)

Key Features

See parametric specs for Memory (EPROM, EEPROM, ROM, NV SRAM)
Parametric specs for Memory (EPROM, EEPROM, ROM, NV SRAM)
End Equipment Medical Consumable ID
PCB ID and Authentication
Peripheral ID and Control
Print Cartridge Authentication
Memory Type ROM
Memory Size 64bit x 1
Bus Type 1-Wire
VSUPPLY (V) (min) 2.8
VSUPPLY (V) (max) 6
Package/Pins ST223/3
THIN WLP/4
TO92/3
TSOC/6
Budgetary
Price (See Notes) 		0.98
See parametric specs for Memory (EPROM, EEPROM, ROM, NV SRAM)
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Simplified Block Diagram

Technical Docs

Data Sheet Silicon Serial Number Feb 08, 2022
App Note Reading and Writing 1-Wire® Devices Through Serial Interfaces
App Note Flip-Chip & Chip-Scale Package Tech & Applications | Maxim Integrated
App Note Communication Noise Immunity of 1-Wire
App Note Injection Molding an IC into a Connector or Consumable Item
App Note Secure Authentication for Medical Disposables
App Note Wirelessly Powering and Accessing a 1-Wire Network
App Note Add Control, Memory, Security, and Mixed-Signal Functions with a Single Contact
App Note Maxim Wafer-Level Package Assembly Guide
App Note Selecting a Serial Bus
App Note Understanding and Using Cyclic Redundancy Checks with Maxim 1-Wire and iButton Products
App Note 1-Wire Software Resource Guide Device Description
App Note 1-Wire Communication Through Software | Maxim Integrated
App Note White Paper 5: Using 1-Wire APIs for Data Sheet Commands
App Note White Paper 2: Using the 1-Wire® Public Domain Kit
App Note Using the DS2480B Serial 1-Wire® Line Driver
App Note 1-Wire Search Algorithm
App Note Creating Global Identifiers Using 1-Wire® Devices
App Note Printed Circuit Board Identification Using 1-Wire® Products
Tutorial Easily Add Memory, Security, Monitoring, and Control to Medical Sensors and Consumables
Tutorial Serial Digital Data Networks
Tutorial Guidelines for Reliable Long Line 1-Wire Networks
Tutorial How to Build a 1-Wire® Evaluation Kit
Tutorial Using a UART to Implement a 1-Wire Bus Master

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .

Parameters

Parametric specs for Memory (EPROM, EEPROM, ROM, NV SRAM)
End Equipment Medical Consumable ID
PCB ID and Authentication
Peripheral ID and Control
Print Cartridge Authentication
Memory Type ROM
Memory Size 64bit x 1
Bus Type 1-Wire
VSUPPLY (V) (min) 2.8
VSUPPLY (V) (max) 6
Package/Pins ST223/3
THIN WLP/4
TO92/3
TSOC/6
Budgetary
Price (See Notes) 		0.98
See parametric specs for Memory (EPROM, EEPROM, ROM, NV SRAM)

Key Features

  • Guaranteed Unique 64-Bit ROM ID Chip for Absolute Traceability
    • Unique, 64-Bit Registration Number (8-BitFamily Code + 48-Bit Serial Number +8-Bit CRC Tester)
    • 8-Bit Family Code Specifies DS2401 Communications Requirements to Reader
  • Minimalist 1-Wire® Interface Lowers Cost and Interface Complexity
    • Multiple DS2401 Devices Can Reside on a Common 1-Wire Net
    • Built-In Multidrop Controller Ensures Compatibility with Other 1-Wire Net Products
    • Reduces Control, Address, Data, and Power to a Single Pin and Communicates at Up to 16.3kbps
    • Presence Pulse Acknowledges When the Reader First Applies Voltage
    • Low-Cost TO-92, SOT-223, and TSOC Surface-Mount Packages
    • TO-92 Tape-and-Reel Version with Leads Bent to 100-mil Spacing (Default) or with Straight Leads (DS2401-SL)
  • Wide Voltage and Temperature Operating Ranges Enables Robust System Performance
    • Extended 2.8V to 6.0V Range
    • Zero Standby Power Required
    • -40°C to +85°C Industrial Temperature Range

Applications/Uses

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

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 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.

Simplified Block Diagram

DS2401: Pin Assignment DS2401: Pin Assignment Zoom icon

Technical Docs

Data Sheet Silicon Serial Number Feb 08, 2022
App Note Reading and Writing 1-Wire® Devices Through Serial Interfaces
App Note Flip-Chip & Chip-Scale Package Tech & Applications | Maxim Integrated
App Note Communication Noise Immunity of 1-Wire
App Note Injection Molding an IC into a Connector or Consumable Item
App Note Secure Authentication for Medical Disposables
App Note Wirelessly Powering and Accessing a 1-Wire Network
App Note Add Control, Memory, Security, and Mixed-Signal Functions with a Single Contact
App Note Maxim Wafer-Level Package Assembly Guide
App Note Selecting a Serial Bus
App Note Understanding and Using Cyclic Redundancy Checks with Maxim 1-Wire and iButton Products
App Note 1-Wire Software Resource Guide Device Description
App Note 1-Wire Communication Through Software | Maxim Integrated
App Note White Paper 5: Using 1-Wire APIs for Data Sheet Commands
App Note White Paper 2: Using the 1-Wire® Public Domain Kit
App Note Using the DS2480B Serial 1-Wire® Line Driver
App Note 1-Wire Search Algorithm
App Note Creating Global Identifiers Using 1-Wire® Devices
App Note Printed Circuit Board Identification Using 1-Wire® Products
Tutorial Easily Add Memory, Security, Monitoring, and Control to Medical Sensors and Consumables
Tutorial Serial Digital Data Networks
Tutorial Guidelines for Reliable Long Line 1-Wire Networks
Tutorial How to Build a 1-Wire® Evaluation Kit
Tutorial Using a UART to Implement a 1-Wire Bus Master

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .