DS28E35P+

Specialized ICS Overview

The DS28E35P+ is a DeepCover Secure Authenticator featuring an ECDSA engine for public-key signature generation using defined SEC domain parameters. It includes a hardware random number generator, SHA-256 hashing capability, and 1024 bits of user EEPROM organized into four 256-bit pages with programmable protection modes. The device communicates via a single-contact 1-Wire interface at up to 76.9kbps over a 3.3V ±10% supply range (-40ºC to +85ºC). It contains a unique factory-programmed 64-bit ROM ID and a 17-bit decrement-on-command counter.

Specialized ICS Feature Summary

• ECDSA Engine for Public-Key Signature Using a Defined SEC Domain Parameter Set
• SHA-256 Engine to Compute Hashes for Subsequent ECDSA Signing
• 1024 Bit User EEPROM with Write/Read Protection and OTP Emulation Modes
• Unique Factory-Programmed 64-Bit Identification Number

Specialized ICS Applications

• Authentication of Consumables
• Peripheral Authentication
• Medical Sensors
• Printer Cartridge Identification and Authentication

Specialized ICS Procurement Notes

Verify the specific package type required, as the DS28E35 family includes both 6-pin TSOC (DS28E35P+) and 8-pin TDFN variants. Confirm that the non-tape-and-reel suffix matches the intended assembly process. Ensure the component meets RoHS compliance standards indicated by the '+' suffix in the ordering information.

Specialized ICS Selection Notes

Select the DS28E35P+ when a 6-pin TSOC package is preferred for the application layout. This variant provides the same cryptographic and memory features as other family members but requires specific footprint considerations for the TSOC outline. Verify thermal resistance requirements against the junction-to-ambient specifications provided for the TSOC package.

Specialized ICS Part Context

The DS28E35P+ belongs to the DS28E35 series of DeepCover Secure Authenticators manufactured by Analog Devices Inc./Maxim Integrated. It is designed to provide secure key storage and authentication capabilities through advanced physical security layers. The 'P+' suffix specifically denotes the 6-pin TSOC package configuration with lead-free/RoHS-compliant materials.

Specialized ICS Replacement Considerations

The DS28E35P+T is a tape-and-reel version of the same component. Other package options include the DS28E35Q+T in an 8-pin TDFN format. Cross-model substitution within the DS28E series requires verification of pin compatibility and feature parity.