MAX66242ESA+

Specialized ICS Overview

The MAX66242ESA+ is a DeepCover Secure Authenticator transponder IC in an 8-SOIC package. It integrates an ISO/IEC 15693 and ISO 18000-3 Mode 1 RF front-end, an I2C interface, and a FIPS 180-based SHA-256 engine with 4096 bits of user EEPROM. The device features a factory-programmed unique 64-bit ROM ID for cryptographic operations. Operating at 13.56 MHz, it harvests energy from the RF field to power internal functions and deliver up to 5mA via a configurable VOUT pin. Supply voltage ranges from 2.97V to 3.63V, with active current consumption of 110µA and standby current of 100µA.

Specialized ICS Feature Summary

• Integrates SHA-256 engine for symmetric key-based bidirectional secure authentication
• Includes 4096 bits of user EEPROM with programmable protection modes (read, write, EPROM emulation, authentication)
• Features ISO/IEC 15693 and ISO 18000-3 Mode 1 compatible RF front-end operating at 13.56 MHz
• Supports I2C master/slave operation to eliminate host microcontrollers in sensor-tag applications

Specialized ICS Applications

• Access Control Systems
• Asset Tracking Solutions
• Printer Cartridge Configuration and Monitoring
• Medical Sensor Authentication and Calibration
• System Intellectual Property Protection

Specialized ICS Procurement Notes

Verify the component matches the specific 8-SOIC surface-mount package configuration. Confirm that the ordering suffix corresponds to the tube packaging format rather than tape and reel variants. Ensure the revision level aligns with design requirements, as electrical characteristics may vary between manufacturing updates.

Specialized ICS Selection Notes

Select this component when batteryless RFID authentication is required alongside local I2C connectivity. The integrated energy harvesting capability allows powering external peripherals directly from the RF field. Verify that the application environment stays within the -40°C to +85°C operating temperature range for guaranteed performance.

Specialized ICS Part Context

This part belongs to the Maxim Integrated DeepCover family of embedded security solutions. These devices are designed to provide physical security layers against die-level attacks and cloning. The MAX66242 specifically targets applications requiring high-security identification combined with data storage and sensor interfacing capabilities.

Specialized ICS Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation. Direct replacements require matching the specific combination of RF standards, memory size, and security engine architecture.

Specialized ICS FAQ

Can the MAX66242 operate without an external power supply?

Yes, the device can harvest energy from an active RF field to operate. It can also deliver up to 5mA via the VOUT pin if the field strength is adequate.

What is the purpose of the 64-bit ROM ID?

The 64-bit ROM ID is factory-programmed and serves as a fundamental input parameter for cryptographic operations and as an electronic serial number within the application.

How does the I2C interface enhance functionality?

The I2C interface can operate as a master port, allowing the MAX66242 to gather information from connected sensors or peripherals and relay data via the RF port, eliminating the need for a host microcontroller.