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Maxim Integrated

Maxim Integrated 1024-BIT 1-Wire EEPROM Part #DS2431X+U | IC | DEX

Maxim Integrated 1024-BIT 1-Wire EEPROM Part #DS2431X+U | IC | DEX

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Maxim Integrated 1024-BIT 1-Wire EEPROM Part #DS2431X+U

The DS2431 is a 1024-bit, 1-Wire® EEPROM chip organized as four memory pages of 256 bits each. Data is written to an 8-byte scratchpad, verified, and then copied to the EEPROM memory. As a special feature, the four memory pages can individually be written protected or put in EPROM-emulation mode, where bits can only be changed from a 1 to a 0 state. The DS2431 communicates over the single-conductor 1-Wire bus. The communication follows the standard 1-Wire protocol. Each device has its own unalterable and unique 64-bit ROM registration number that is factory lasered into the chip. The registration number is used to address the device in a multidrop, 1-Wire net environment.


  • Accessory/PCB Identification
  • Medical Sensor Calibration Data Storage
  • Analog Sensor Calibration Including IEEE P1451.4 Smart Sensors
  • Ink and Toner Print Cartridge Identification
  • After-Market Management of Consumables

Benefits and Features:

  • 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




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