DS2431

PRODUCTION

1024-Bit 1-Wire EEPROM

1Kb Serial EEPROM Operates from Single-Contact 1-Wire Interface

Data Sheet (Rev. 16)
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Part Details

  • Easily Add Traceability and Relevant Information to Any Individual System
    • 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
  • Minimalist 1-Wire Interface Lowers Cost and Interface Complexity
    • IEC 1000-4-2 Level 4 ESD Protection (±8kV Contact, ±15kV Air, typ)
    • Reads and Writes Over a Wide Voltage Range from 2.8V to 5.25V from -40°C to +85°C
    • Communicates to Host with a Single Digital Signal at 15.4kbps or 125kbps

There is a newer version of this part available

DS28E54 RECOMMENDED FOR NEW DESIGNS

1-Wire SHA3-256 Secure Authenticator with DS2431/DS28E07 Compatibility

DS2431
1024-Bit 1-Wire EEPROM
DS2431: Typical Operating Circuit
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Documentation

Data Sheet 1

Reliability Data 1

Application Note 3

Design Note 6

Technical Articles 24

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Hardware Ecosystem

Parts Product Life Cycle Description
DS28E54
RECOMMENDED FOR NEW DESIGNS 1-Wire SHA3-256 Secure Authenticator with DS2431/DS28E07 Compatibility
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Evaluation Kits

DS9120P

Socket Boards for Evaluating 1-Wire Devices

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Features and Benefits

  • Fully Compliant with DS9481R USB-to-1-Wire Adapter
  • Convenient On-Board Test Points
  • Jumper Disconnect/Connect Functionality
  • Meets RJ11 1-Wire Interface Standard
  • Include Connections for Various OTP EPROM Programming

Product Details

The DS9120 family of socket boards are RJ11-to-socket boards that provide the hardware connectivity necessary to evaluate and operate 1-Wire® products in an easy-to-use PC environment. Additionally, the socket boards can be readily used with the DS9481R USB-to1-Wire adapter to create a 1-Wire PC programmer for 1-Wire EEPROM and one-time programmable (OTP)/EPROM devices.

DS9120

Socket Boards for Evaluating 1-Wire Devices

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Features and Benefits

  • Fully Compliant with DS9481R USB-to-1-Wire Adapter
  • Convenient On-Board Test Points
  • Jumper Disconnect/Connect Functionality
  • Meets RJ11 1-Wire Interface Standard
  • Include Connections for Various OTP EPROM Programming

Product Details

The DS9120 family of socket boards are RJ11-to-socket boards that provide the hardware connectivity necessary to evaluate and operate 1-Wire® products in an easy-to-use PC environment. Additionally, the socket boards can be readily used with the DS9481R USB-to1-Wire adapter to create a 1-Wire PC programmer for 1-Wire EEPROM and one-time programmable (OTP)/EPROM devices.

DS9120Q

Socket Boards for Evaluating 1-Wire Devices

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Features and Benefits

  • Fully Compliant with DS9481R USB-to-1-Wire Adapter
  • Convenient On-Board Test Points
  • Jumper Disconnect/Connect Functionality
  • Meets RJ11 1-Wire Interface Standard
  • Include Connections for Various OTP EPROM Programming

Product Details

The DS9120 family of socket boards are RJ11-to-socket boards that provide the hardware connectivity necessary to evaluate and operate 1-Wire® products in an easy-to-use PC environment. Additionally, the socket boards can be readily used with the DS9481R USB-to1-Wire adapter to create a 1-Wire PC programmer for 1-Wire EEPROM and one-time programmable (OTP)/EPROM devices.

DS9090K

1-Wire Device Evaluation Kit Rev B4

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Features and Benefits

Evaluation Kit Contents
  • 1pc. PCB: 1-Wire Device Evaluation Board
  • 1pc. RJ11 male to RJ11 male cable, 7ft
  • 1pc. 1-Wire USB adapter with RJ11 Maxim DS9490R#
  • 1pc. 64-bit silicon serial number (3-pin TO92) Maxim DS2401+
  • 1pc. 1-Wire dual-addressable switch plus 1kb EPROM memory (6-pin TSOC) Maxim DS2406P+
  • 1pc. 1-Wire dual-channel addressable switch (6-pin TSOC) Maxim DS2413P+
  • 1pc. 1024-bit 1-Wire EEPROM (3-pin TO92) Maxim DS2431+
  • 1pc. 4Kb 1-Wire EEPROM (3-pin PR-35) Maxim DS2433+
  • 1pc. 4096-Bit Addressable 1-Wire EEPROM with PIO (on EV kit) Maxim DS28E04S-100+
  • 1pc. 20Kb 1-Wire EEPROM (3-pin TO92) Maxim DS28EC20+
  • 1pc. Package of 11 2-pin shunts for jumpering

Product Details

The DS9090K provides the hardware and software necessary to evaluate and operate 1-Wire® products in an easy-to-use PC environment. All 1-Wire EEPROM, EPROM, and ROM devices are readable with the DS9090K. All 1-Wire devices with memory or PIO/switches can be written with the DS9090K except 1-Wire EPROM devices*. In this way, the engineer can evaluate 1-Wire chips for potential design purposes or support end-product development activity. Kit operation requires a host PC. Demonstration software consists of the OneWireViewer (a Java™ program). For 32-bit and 64-bit Windows® operating systems, the OneWireViewer comes as part of the 1-Wire Drivers install package. For other operating systems, refer to the online version of the OneWireViewer.

eval board
schematic 1
DS9481R-3C7

USB-to-1-Wire/iButton Adapter

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Features and Benefits

  • Driver Support for Windows® 11 and Windows 10 Operating Systems
  • Enumerates as a Virtual PC COM Port by Use of the Prolific PL-2303GC USB-to-UART Bridge IC
  • Emulates the DS2480B 1-Wire Line Driving Functionality
  • 1-Wire OTP/EPROM Programming Provided Without the Need of an External Power Supply (12V on OW, 7V on PULSE)
  • 3.3V Read/Write Operation to 1-Wire/iButton Devices
  • RJ11 Interface for Standard Connectivity Accessories such as the DS9120 Socket Adapter
  • Supports Standard and Overdrive 1-Wire Communication
  • Provides Strong Pullup to 3.3V
  • Fully Compliant with USB 2.0 Specification

Product Details

The DS9481R is a USB-to-1-Wire adapter for easy PC connectivity to 1-Wire devices. The adapter provides an RJ11 connector with the signals to communicate with all 1-Wire and iButton devices that support a 3.3V data I/O level. Additionally, the adapter provides the support and signaling to program 1-Wire/iButton EEPROM and one-time programmable (OTP)/EPROM devices. To provide a total hardware solution, the DS9481R can readily be used with the DS9120 socket adapter to create a 1-Wire PC programmer for 1-Wire peripheral devices (contact factory for more information). The equivalent peripheral hardware solution for the iButton is the DS1402D-DR8.

DS9090EVKIT

1-Wire Device Evaluation Kit

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Features and Benefits

  • Easy Setup with USB Adapter
  • Fully Compliant with USB 2.0 Specification
  • Software Runs on Windows 8, Windows 7, WindowsVista®, and Windows XP® OS (32-Bit and 64-Bit Versions)
  • Convenient On-Board Test Points and Dual TO92 Socket
  • Standard RJ11 Connector Interfaces to DS9120 Socket Boards
  • Free Download of 1-Wire Drivers and OneWireViewer Demonstration Software
  • Compatible with Other 1-Wire Devices Purchased Separately

Product Details

The DS9090EVKIT evaluation system (EV system) consists of a DS9490+ USB-to-1-Wire®/iButton® adapter for PC connectivity, a DS9120P+ socket board with RJ11 cable, and seven different 1-Wire devices. This EV system provides the special hardware and software system to exercise the features of 1-Wire devices with memory or PIO/switches, except 1-Wire EPROM devices. (EPROM devices such as the DS2502 and DS2506 require a different adapter (DS9481R-3C7) to perform an EPROM write. This adapter can be purchased separately.) 1-Wire EPROM devices are available for sampling.

The EV system software consists of the OneWireViewer (a Java® program) that runs under Windows ® OS and comes as part of the 1-Wire drivers installation package.
DS9120P
Socket Boards for Evaluating 1-Wire Devices
DS9120
Socket Boards for Evaluating 1-Wire Devices
DS9120Q
Socket Boards for Evaluating 1-Wire Devices
DS9090K
1-Wire Device Evaluation Kit Rev B4
DS9481R-3C7
USB-to-1-Wire/iButton Adapter
DS9481R USB-to-1-Wire/iButton Adapter
DS9090EVKIT
1-Wire Device Evaluation Kit

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