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Home > Products > Integrated Circuits (ICs) > Memory > Memory

Analog Devices Inc./Maxim Integrated DS28E01-100+

Name: DS28E01-100+
Brand: Analog Devices Inc./Maxim Integrated
SKU: DS28E01-100+
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: DS28E01-100+

Manufacturer:: Analog Devices Inc./Maxim Integrated

Category:: Memory

Package:: TO-226-3, TO-92-3 (TO-226AA)

Datasheet:: DS28E01-100+.pdf

Description:: IC EEPROM 1KBIT 1-WIRE TO92-3

Quantity:: RFQ Add To RFQ list

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Inventory:1,645

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Product details

Overview

DS28E01-100+ from Analog Devices is a secure 1-Wire EEPROM IC integrating a SHA-1 authentication engine, 1024-bit EEPROM (4 × 256-bit pages), and a factory-programmed unique 64-bit ROM ID. It operates from 2.8V to 5.25V across –40°C to +85°C and communicates at 15.3kbps or 90.9kbps on a single-contact bus. It enables cryptographic authentication in printer cartridge identification.

For engineers reviewing the DS28E01-100+ datasheet, DS28E01-100+ pinout, DS28E01-100+ application, or DS28E01-100+ equivalent, key selection considerations include 1-Wire interface timing compliance, SHA-1 secret size configuration (64/320-bit), EPROM-emulation mode support on Page 1, write-protection granularity, and TO-92 package mechanical fit for legacy accessory slots.

Technical Context

The DS28E01-100+ implements ISO/IEC 10118-3 SHA-1 in hardware to generate 160-bit MACs using a 40-bit random challenge, device-specific data, and user secrets. Its 1-Wire interface uses strong pullup timing and built-in hysteresis/filtering for noise immunity in industrial environments.

Memory architecture includes a 64-bit scratchpad for page write buffering, per-page write protection (Page 0, Page 3, or all four), and OTP EPROM-emulation mode on Page 1 where bits transition only from 1→0. The 64-bit ROM ID serves as immutable node address in multi-device 1-Wire networks.

Key Specifications

Parameter	Value and Actual Design Meaning
Interface	Single-contact 1-Wire® bus with standard protocol compliance and ROM ID-based addressing
EEPROM Capacity	1024 bits organized as four 256-bit pages with 64-bit scratchpad for atomic writes
SHA-1 Engine	On-chip hardware accelerator computing 160-bit MACs using 64-bit or 320-bit secrets plus 40-bit challenge
Operating Voltage	2.8V to 5.25V - supports direct connection to 3.3V or 5V host I/O without level shifting
Temperature Range	–40°C to +85°C - qualified for industrial and medical peripheral environments
Package	2-lead TO-92 - compact through-hole form factor for space-constrained consumable modules
Write Protection	User-selectable: Page 0 only, Page 3 only, or all four pages; Page 1 supports EPROM-emulation (1→0 only)

Pinout & Package

DS28E01-100+ is housed in a 2-lead TO-92 package with leads designated GND and I/O. The I/O pin serves as bidirectional 1-Wire data line with internal weak pull-down; external pullup resistor required. GND is the sole ground reference. No V_CC pin - device derives power parasitically from the 1-Wire bus during active communication.

Pin/Terminal	Circuit Role	Design Meaning
I/O	Bidirectional 1-Wire data line	Carries time-critical reset/presence pulses, command packets, data reads/writes, and SHA-1 challenge-response exchange
GND	Ground reference	Return path for parasitic power current and signal reference for I/O logic threshold detection

Key Features

Feature	Design Value
Factory-programmed 64-bit ROM ID	Provides unclonable node identity for secure enumeration and binding in multi-device 1-Wire networks
Hardware SHA-1 engine	Offloads cryptographic computation from host MCU, eliminating software library dependencies and timing side-channel risks
EPROM-emulation mode (Page 1)	Enables one-time programmable storage of calibration constants or firmware flags with irreversible bit transitions (1→0 only)
Configurable page write protection	Allows independent locking of Page 0 (e.g., serial number), Page 3 (e.g., usage counter), or full array for tamper resistance
Parasitic power operation	Eliminates need for local V_CC supply - simplifies PCB layout and reduces BOM count in disposable accessories

Applications

Printer Cartridge Authentication	Medical Sensor Calibration
Use Scenario: OEM ink/toner cartridges authenticate before enabling print cycles to prevent third-party refills. IC Role / Device Role / Timing Role: Secure identity anchor and secret store; performs SHA-1 challenge-response during cartridge insertion handshake. Use Value: Prevents unauthorized reuse via cryptographic binding between cartridge ID and host system secret - no software update required on host.	Use Scenario: Disposable patient sensors store calibrated coefficients and usage history that must survive sterilization cycles. IC Role / Device Role / Timing Role: Tamper-resistant nonvolatile memory with authenticated read access; EPROM-emulation mode preserves calibration integrity. Use Value: Enables field-updatable calibration data while preventing malicious overwrite - meets IEC 62304 Class B software safety requirements.
System IP Protection	Industrial Module Binding
Use Scenario: FPGA or ASIC configuration files are encrypted using keys derived from DS28E01-100+ secrets. IC Role / Device Role / Timing Role: Root-of-trust for key derivation; provides cryptographically verifiable entropy source for AES key generation. Use Value: Blocks cloning of proprietary logic by tying configuration decryption to physical presence of authenticated hardware.	Use Scenario: Field-replaceable motor drives or I/O modules require verification before accepting firmware updates. IC Role / Device Role / Timing Role: Secure boot credential store; validates module authenticity prior to CAN or Ethernet firmware download. Use Value: Prevents installation of counterfeit modules by enforcing cryptographic proof of origin during commissioning.

Printer Cartridge Authentication

Medical Sensor Calibration

Use Scenario: OEM ink/toner cartridges authenticate before enabling print cycles to prevent third-party refills.

IC Role / Device Role / Timing Role: Secure identity anchor and secret store; performs SHA-1 challenge-response during cartridge insertion handshake.

Use Value: Prevents unauthorized reuse via cryptographic binding between cartridge ID and host system secret - no software update required on host.

Use Scenario: Disposable patient sensors store calibrated coefficients and usage history that must survive sterilization cycles.

IC Role / Device Role / Timing Role: Tamper-resistant nonvolatile memory with authenticated read access; EPROM-emulation mode preserves calibration integrity.

Use Value: Enables field-updatable calibration data while preventing malicious overwrite - meets IEC 62304 Class B software safety requirements.

System IP Protection

Industrial Module Binding

Use Scenario: FPGA or ASIC configuration files are encrypted using keys derived from DS28E01-100+ secrets.

IC Role / Device Role / Timing Role: Root-of-trust for key derivation; provides cryptographically verifiable entropy source for AES key generation.

Use Value: Blocks cloning of proprietary logic by tying configuration decryption to physical presence of authenticated hardware.

Use Scenario: Field-replaceable motor drives or I/O modules require verification before accepting firmware updates.

IC Role / Device Role / Timing Role: Secure boot credential store; validates module authenticity prior to CAN or Ethernet firmware download.

Use Value: Prevents installation of counterfeit modules by enforcing cryptographic proof of origin during commissioning.

Equivalent & Alternatives

The following parts are listed as comparable options for similar secure authentication applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
DS2432P-100+	4K-bit EEPROM with SHA-1 engine; 64-bit secret only (no 320-bit extension); 2-lead TO-92 package	Lacks EPROM-emulation mode and configurable multi-page write protection; lower memory density but same footprint	Select when only basic authentication and smaller EEPROM capacity are needed; not suitable for multi-secret or calibration flag use cases
MAX31200A+T	1-Wire secure authenticator with 1024-bit EEPROM and SHA-256 engine; 6-lead TSOC package	SHA-256 instead of SHA-1; requires PCB redesign due to 6-pin vs. 2-pin TO-92; higher security margin against collision attacks	Choose for new designs requiring NIST-approved hash algorithm; not drop-in compatible due to package and pin count mismatch

Compared with DS2432P-100+, the DS28E01-100+ adds 320-bit secret extension and EPROM-emulation mode for enhanced flexibility in calibration and licensing; compared with MAX31200A+T, it offers TO-92 compatibility and SHA-1 provenance but lacks SHA-256-level cryptographic assurance.

Availability

DS28E01-100+ is available at Aetrix Electronics and suitable for printer cartridge identification, medical sensor calibration, and industrial module binding requiring stable component supply and long-term lifecycle support.

Supply support for DS28E01-100+ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Analog Devices is a global semiconductor company specializing in high-performance analog, mixed-signal, and digital signal processing technologies.

The DS28E01-100+ belongs to Analog Devices' secure 1-Wire authentication product line, designed specifically for cost-sensitive, space-constrained peripherals requiring cryptographic binding without host MCU overhead.

FAQ

What is the operating voltage range of the DS28E01-100+?

The DS28E01-100+ operates from 2.8V to 5.25V across its full temperature range of –40°C to +85°C. It supports both 3.3V and 5V host systems without level-shifting circuitry. Power is delivered parasitically via the 1-Wire I/O line, eliminating the need for a dedicated V_CC pin - a key enabler for ultra-low-cost consumable designs.

Does the DS28E01-100+ support SHA-256 or only SHA-1?

The DS28E01-100+ implements only the SHA-1 algorithm per ISO/IEC 10118-3, optimized in hardware for 160-bit MAC generation. It does not support SHA-256. For SHA-256 capability, consider the MAX31200A+T - however, that part uses a 6-lead TSOC package and is not pin-compatible with the DS28E01-100+.

How is memory organized in the DS28E01-100+?

The DS28E01-100+ contains 1024 bits of EEPROM arranged as four 256-bit pages (Pages 0–3) and a 64-bit scratchpad used for buffered writes. Each page can be independently write-protected. Page 1 supports EPROM-emulation mode, allowing bits to change only from 1 to 0 - ideal for storing immutable calibration flags or version counters.

Can the DS28E01-100+ operate without an external pullup resistor?

No - the DS28E01-100+ requires an external pullup resistor on the I/O line to establish the 1-Wire bus high state. The device uses parasitic power, so the pullup also supplies current during active communication. Typical values range from 4.7kΩ to 10kΩ depending on bus capacitance and speed (15.3kbps vs. 90.9kbps).

Is the DS28E01-100+ RoHS-compliant and lead-free?

Yes - the "+" suffix in DS28E01-100+ explicitly denotes a lead(Pb)-free and RoHS-compliant package. This applies to the 2-lead TO-92 variant and is verified per Analog Devices' material declarations and JEDEC J-STD-609 standards.

DS28E01-100+ Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc./Maxim Integrated

Series:: -

Package/Case:: TO-226-3, TO-92-3 (TO-226AA)

Packaging:: Bag

Product Status:: Active

Programmable:: Not Verified

Memory Type:: Non-Volatile

Memory Format:: EEPROM

Technology:: EEPROM

Memory Size:: 1Kbit

Memory Organization:: 256 x 4

Memory Interface:: 1-Wire®

Clock Frequency:: -

Write Cycle Time - Word, Page:: -

Access Time:: 2 µs

Voltage - Supply:: 2.8V ~ 5.25V

Operating Temperature:: -40°C ~ 85°C

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-92-3

DS28E01-100+ FAQ

1.How can I place an order for DS28E01-100+ through Aetrix?

Please submit a Request for Quotation (RFQ) for DS28E01-100+ on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for DS28E01-100+ reliable?

The price and inventory of DS28E01-100+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS28E01-100+ is usually 5 days.

3.What payment methods are accepted for DS28E01-100+?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS28E01-100+ transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for DS28E01-100+?

DS28E01-100+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your DS28E01-100+ order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for DS28E01-100+?

For technical support, including DS28E01-100+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS28E01-100+ requirements.

6.How does Aetrix verify that DS28E01-100+ is sourced from the original manufacturer or authorized distributors?

All DS28E01-100+ products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that DS28E01-100+ meets industry standards.

7.What is the process for return or replacement of DS28E01-100+?

All DS28E01-100+ units undergo pre-shipment inspection (PSI). If there is an issue with DS28E01-100+, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The DS28E01-100+ part is unused and in its original packaging.

Return procedure for DS28E01-100+:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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