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Analog Devices Inc./Maxim Integrated MAX66242ESA+
- Part No.:
- MAX66242ESA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Specialized ICs
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Description:
- IC AUTHENTICATION CHIP 8SOIC
- Quantity:
Unit Price:$0
Ext Price:$0
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- Shipping:
Product Details
MAX66242ESA+ - DeepCover Secure Authenticator
MAX66242ESA+ combines a 13.56 MHz ISO 15693 transponder, an I2C interface, a SHA-256 authentication engine and 4 Kbits of user EEPROM. Analog Devices lists this exact orderable part in an 8-pin, 150-mil SO package for -40 C to +85 C operation.
Technical values and the exact package option follow the manufacturer's MAX66242 abridged data sheet, Rev. 3.
Overview
The MAX66242 is a secure tag IC for contactless identification and authenticated data exchange. Its RF front end supports ISO/IEC 15693 and ISO/IEC 18000-3 Mode 1, while the I2C port can work as a master or slave. A factory-programmed 64-bit ROM ID and a device secret participate in challenge-response authentication.
Key Advantages
The on-chip SHA-256 engine supports symmetric-key, challenge-response transactions between the tag and a trusted host.
A 13.56 MHz RF interface and I2C port connect a reader, host controller or nearby sensor.
Sixteen 256-bit user pages provide configurable read/write protection and authenticated operations.
RF energy harvesting permits batteryless communication when the antenna and field conditions support it.
Feature Summary
ISO/IEC 15693 and ISO/IEC 18000-3 Mode 1 at a nominal 13.56 MHz carrier.
SHA-256 engine, 256-bit secret, unique 64-bit ROM ID and 256-bit scratchpad.
I2C master/slave capability, with a configurable open-drain PIO and energy-harvesting output.
ESA+ specifies the 8 SO package; the separate ESA+T suffix identifies tape-and-reel delivery.
Package & Footprint
The manufacturer's ordering table lists MAX66242ESA+ as an 8 SO device, package code S8+2, 150-mil body. LCDChip's registered package is 8-SOIC. Use the manufacturer's package outline 21-0041 and land pattern 90-0096 when checking the PCB footprint.
- Confirm pin-one orientation against the manufacturer's top-view drawing.
- Route AC1 and AC2 to the designed HF antenna network.
- Observe the I2C and optional VCC supply requirements.
The generic package image is not a device-specific pin diagram.
Pin Functions
The manufacturer assigns the following terminals to the 8 SO option.
Pin functions differ on the 10-pin TDFN option; do not transfer this SO pin map to another package.
Key Specifications
| Device function | Secure RF/I2C authenticator |
|---|---|
| RF interface | ISO/IEC 15693; ISO/IEC 18000-3 Mode 1 |
| RF carrier | 13.56 MHz nominal |
| Host interface | I2C master/slave |
| User EEPROM | 4096 bits, 16 pages of 256 bits |
| Authentication engine | SHA-256 symmetric-key challenge-response |
| Device identifier | Factory-programmed 64-bit ROM ID |
| Optional VCC supply | 2.97 V to 3.63 V |
| Operating temperature | -40 C to +85 C |
| Package | 8 SO, 150 mil; registered 8-SOIC |
| Ordering distinction | ESA+; ESA+T is the tape-and-reel variant |
Consult the controlled data sheet for RF-field conditions, I2C timing and configuration-dependent limits.
Replacement Considerations
A candidate replacement must be compared for RF protocol behavior, I2C command set, secret provisioning, memory protection, pinout, antenna design and package. The 10-pin TDFN ordering option is not footprint-compatible with this 8 SO form. No unverified internal alternative link or drop-in replacement claim is made.
Manufacturer Information
MAX66242 was documented by Maxim Integrated and is listed by Analog Devices as a DeepCover secure authenticator. The manufacturer's current product page marks the family not recommended for new designs; check the current lifecycle and controlled technical documents before a new platform commitment.
Applications
Authenticate a replaceable peripheral using a trusted host and provisioned device secret.
Associate contactless identification with protected user data.
Bridge an I2C sensor to an HF reader where power and protocol budgets permit.
Store configuration or calibration records with memory protection policy.
Quality & Authenticity
Verify the complete ESA+ ordering code, package marking and lot traceability. During acceptance, validate the 64-bit ROM ID, programmed secret policy and the intended challenge-response sequence in a controlled test environment. Physical package inspection alone does not prove a secure personalization state.
FAQ
Can the MAX66242 operate without a battery?
Yes, the RF field can power the transponder when the antenna and reader field satisfy the manufacturer's requirements.
Does it provide an I2C interface?
Yes. The I2C port can operate in master or slave mode.
How much user EEPROM is available?
There are 4096 bits arranged as sixteen 256-bit pages.
Is ESA+T identical packaging?
It uses the same 8 SO package but identifies tape-and-reel delivery.
Engineering Notice
Review the latest manufacturer data sheet, errata, lifecycle notice and package drawing before final PCB or firmware release. The abridged data sheet notes specific ISO 15693 timing exceptions; verify reader interoperability for the intended deployment. Security depends on correct provisioning and host-side verification, not the IC alone.
MAX66242ESA+ Information
- Specifications
- Tags
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- DeepCover®
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Authentication Chip
- Applications:
- Medical
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
- Grade:
- -
- Qualification:
- -
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