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DS28E07+T

Name: DS28E07+T
Rating: 4.7 (12 reviews)

IC EEPROM 1KBIT 1-WIRE TO92-3

メーカー
Mfr。パート #DS28E07+T
パッケージ TO-226-3, TO-92-3 (TO-226AA) Formed Leads
データシート DS28E07+T DataSheet
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仕様

Supplier	Analog Devices Inc./Maxim Integrated
Package	Tape & Reel (TR)
ProductStatus	Active
MemoryType	Non-Volatile
MemoryFormat	EEPROM
Technology	EEPROM
MemorySize	1Kb (256 x 4)
MemoryInterface	1-Wire®
AccessTime	2 µs
Voltage-Supply	3V ~ 5.25V
OperatingTemperature	-40°C ~ 85°C (TA)
MountingType	Through Hole
Package/Case	TO-226-3, TO-92-3 (TO-226AA) Formed Leads

概要

Description

DS28E07 is a 1-Wire secure memory device with built-in cryptographic capabilities for authentication and protected data storage. It provides a cryptographic challenge/response engine, unique device ID, and read/write-protected memory regions, allowing a host to prove its identity and securely access data without exposing keys. It uses the 1-Wire interface and is suitable for lightweight, single-wire security in embedded systems.
DS28E07+T is the tamper-resistant variant. In addition to all DS28E07 features, the +T version adds anti-tamper protection and tamper-detection capabilities to help prevent key extraction or unauthorized data modification. This typically includes tamper-detect signals or flags and enhanced protection against physical or side-channel attacks.
Typical applications: product authentication and anti-counterfeiting, secure key storage for embedded systems, licensing and asset tracking.
Interface: 1-Wire compatible (works with DS2480B/DS2482 bridges or host MCUs with 1-Wire support).

Features

DS28E07+T is a 1-Wire cryptographic authenticator. Key features include:
- 1-Wire interface with standard ROM and function commands for easy integration.
- On-chip ECC (ECDSA) signing engine with a permanently burned private key; supports digital signatures and device identity verification.
- Certificate storage and PKI support for trust chaining; host can verify against the device public key/cert.
- Challenge–response mutual authentication to prove device identity to a host.
- Secure nonvolatile memory with partitioned, lockable data zones and read/write protections.
- Tamper-resistant security architecture with protection of keys and sensitive data.
- Hashing capability (SHA-256) for data integrity and authentication workflows.
- Low-power operation and suitability for industrial/automotive temperature ranges.
- Available in compact 8-pin packages, common for secure authentication and anti-counterfeit applications.
Applications: product authentication, secure boot/licensing, digital signing, and anti-counterfeiting.

Package

Package type: 8‑pin SOIC (surface‑mount) package; the +T suffix indicates Tape‑and‑Reel packaging.

Pinout

- Pin count: 8 pins (8‑pin package).
- Function: 1‑Wire cryptographic secure element (authenticator) with on‑chip keys for challenge/response authentication and secure memory; used to authenticate devices on a 1‑Wire network. The +T suffix typically denotes Tape & Reel packaging.

Manufacturer

- Manufacturer: Maxim Integrated (now part of Analog Devices).
- Company type: American multinational semiconductor company that designs and manufactures analog and mixed-signal integrated circuits, including security/authentication ICs. Acquired by Analog Devices in 2021.

Application

Secure key storage and cryptographic functions over 1-Wire for OEM devices. Applications include device authentication and anti-counterfeiting, secure boot and firmware update authorization, encryption/signature verification, mutual authentication in IoT/industrial sensors, and supply-chain traceability (automotive, medical, access control).