DeepCover Secure Authenticator with SHA-256 Coprocessor and 1-Wire Master Function

Advanced Physical Security Protects System Secret, Offloads Host SHA-256 Computing

Please check latest availability status for a specific part variant.


DeepCover® embedded security solutions cloak sensitive data under multiple layers of advanced physical security to provide the most secure key storage possible.

The DeepCover Secure Authenticator (DS2465) is a SHA-256 coprocessor with built-in 1-Wire® master that provides the SHA-256 and memory functionality required by a host system to communicate with and operate a 1-Wire SHA-256 slave. In addition, it performs protocol conversion between the I2C master and any attached 1-Wire SHA-256 slaves. For 1-Wire line driving, internal user-adjustable timers relieve the system host processor from generating time-critical 1-Wire waveforms, supporting both standard and overdrive 1-Wire communication speeds. The 1-Wire line can be powered down under software control. Strong pullup features support 1-Wire power delivery to 1-Wire devices such as EEPROMs. When not in use, the DS2465 can be put in sleep mode where power consumption is minimal.

A DS2465 evaluation board is included in each of the authenticator evaluation kits below.

DS2465: Typical Application Circuit DS2465: Typical Application Circuit Enlarge+

Key Features

  • SHA-256 Engine to Operate a Symmetric-Key-Based Bidirectional Secure Authentication Model
  • Two 32-Byte Pages of User EEPROM with Multiple Programmable Protection Options
  • 1-Wire Master Port with Selectable Active or Passive 1-Wire Pullup
  • Strong 1-Wire Pullup Provided by an Internal Low-Impedance Signal Path
  • 1-Wire Port Can Be Powered Down Under Software Control
  • I²C Operating (Pullup) Voltage: 3.3V ±10%
  • ±8kV ESD Protection on IO to GND (JESD22-A114 HBM, Typical)
  • Operating Range: 3.3V ±10%, -40°C to +85°C
  • 6-Pin TSOC Package


  • Authentication of Consumables
  • Secure Feature Control
Part NumberFunctionsVSUPPLY
Package/PinsOper. Temp.
1-Wire Bridge
SHA-256 Coprocessing
2.97 to 3.63
-40 to +85
See All 1-Wire Interface Products (9)

Part NumberCrypto EngineApplicationsMemory TypeMemory SizeBus TypeVSUPPLY
Deep CoverPackage/Pins
DS2465 Symmetric
Companion Coprocessor
IP Protection
Medical Consumable ID
PCB ID and Authentication
Print Cartridge Authentication
EEPROM512 bits
2.8 to 3.6Yes
See Data Sheet
See All Secure Authenticators (29)
Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

DS28E25EVKIT: Evaluation System for the DS28E25 and DS2465
DS28E22EVKIT: Evaluation System for the DS28E22 and DS2465
DS28E15EVKIT: Evaluation System for the DS28E15 and DS2465
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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Related Resources

Deep Cover Automotive I²C Authenticator

  • ECC-P256 Compute Engine
  • SHA-256 Compute Engine
  • SHA-256 One-Time Pad Encrypted R/W of Configurable Memory Using an ECDH Established Key

Belle Isle 2020
05/29/2020 - 05/31/2020, Detroit, MI
2020 Detroit Grand Prix - Chevrolet Detroit Grand Prix presented by Lear Fast Facts The Chevrolet Detroit Grand Prix presented by Lear was hosted on Belle Isle, May 29 - 30 2020. The event featured the cars of the NTT IndyCar Series, the IMSA WeatherTech SportsCar Championship and the Trans Am Series presented by Pirelli. The weekend is collectively referred to as the Chevrolet Detroit Grand Prix presented by Lear and it once again featured the Chevrolet Dual in Detroit IndyCar doubleheader.