1. Products
  2. Embedded Security and 1-Wire
  3. Secure Authenticators
  4. MAX66242


Features and Benefits

  • Complete Counterfeit/Cloning/IP Protection Engine
    • SHA-256 Engine Runs a Symmetric Key-Based Bidirectional Secure Authentication
    • Strong Authentication Achieved with a High Bit Count, User-Programmable Secret, and Input Challenge
    • Batteryless RF Communication
    • 4096 Bits of User EEPROM with User-Programmable Memory
    • Memory R/W Protection Options Including OTP/EPROM Emulation Mode
    • Unique Factory-Programmed 64-Bit Identification Number
    • Integrated 32-Byte SRAM Buffer Enables Faster HF-to-I2C Transactions
  • Flexible Connection and Communication Capabilities Support a Wide Range of Applications
    • Programmable I/O (PIO) Can Be Configured as a Wake-Up or Monitoring/Control Signal
    • HF Standards ISO/IEC 15693 and 18000-3 MODE1 Compatible (13.56 MHz ±7kHz Carrier Frequency)
    • I2C Interface—Master/Slave Port Eliminates Host Microcontroller for Sensor-Tag Applications
    • Energy Harvesting VOUT Pin for Powering External Components
    • Optional 3.3V Supply Voltage Fits Line and Battery-Powered Applications
    • -40°C to +85°C Operating Temperature Range
  • Enables Robust Design
    • ±4kV HBM ESD Protection on PIO, ±2kV on All Other Pins

Product Details

DeepCover® embedded security solutions cloak sensitive data under multiple layers of advanced physical security to provide the most secure key storage possible.

Our Secure Drug Delivery video shows how Maxim security products can be used to authenticate remote drug delivery.

The DeepCover Secure Authenticator (MAX66242) is a transponder IC that combines an ISO/IEC 15693 and ISO 18000-3 Mode 1-compatible RF front-end, an I2C front-end, a FIPS 180-based SHA-256 engine and 4096 bits of user EEPROM in a single chip. A bidirectional security model enforces two-way authentication between a host system and the MAX66242. Each device has its own guaranteed unique 64-bit ROM ID that is factory programmed into the chip. This ROM ID is used as a fundamental input parameter for cryptographic operations and serves as an electronic serial number within the application.

In addition to the RF interface, the MAX66242 also has an I2C interface, which can operate as a slave or master port. When acting as a master, the MAX66242 can gather information from a connected sensor or peripheral device and relay its data via the RF port. When acting as a slave, the device can serve as an intermediary between a connected host and an RF reader. The MAX66242 can harvest energy from an active RF field. The configurable supply output can deliver up to 5mA given adequate field strength.


  • Access Control
  • Asset Tracking
  • Medical Sensor Authentication and Calibration
  • Printer Cartridge Configuration and Monitoring
  • System Intellectual Property Protection
Complete documentation is available upon completion of a Non-Disclosure Agreement (NDA). To request an NDA, click here.

Product Lifecycle icon-recommended Recommended for New Designs

This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.

Evaluation Kits (2)

Documentation & Resources

  • View All (16)
  • Data Sheets (1)
  • Reliability Data (1)
  • Videos (1)
  • Application Notes (2)
  • Design Notes (1)
  • Technical Articles (10)
  • Tools & Simulations

    Reference Designs (1)

    Product Recommendations

    MAX66242 Companion Parts

    Recommended Related Parts

    Design Resources

    ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.

    Part Number Material Declaration Reliability Data Pin/Package Drawing CAD Symbols, Footprints & 3D Models
    MAX66242E/W+ Material Declaration Reliability Data NA-BUMPED_CHIP-N/A
    MAX66242ESA+ Material Declaration Reliability Data Small-Outline IC, Narrow (0.15in)
    MAX66242ESA+T Material Declaration Reliability Data Small-Outline IC, Narrow (0.15in)
    MAX66242ETB+ Material Declaration Reliability Data Thin Dual Flatpack No Leads
    MAX66242ETB+T Material Declaration Reliability Data Thin Dual Flatpack No Leads
    MAX66242ISA-A+ Material Declaration Reliability Data Small-Outline IC, Narrow (0.15in)
    Wafer Fabrication Data MAX66242 Reliability Data

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