Digital Decoder Ring

Please check latest availability status for a specific part variant.


The DS9104 Digital Decoder Ring is a portable database disguised as jewelry with the DS1996 Memory iButton® as signet. Data is transferred serially using the 1-Wire® protocol through a simple interface. Data is first written to a scratchpad, verified, and then transferred to NV memory. The 64-bit serial number guarantees that each ring is unique and traceable. The ring communicates by touch through a parallel or serial port interface. Applications include access control to buildings, doors, and computers and digitized storage of personal information.

Note: Rings cannot be resized as the iButton will not withstand the high temperatures required.

DS9104-060 6 16.4
DS9104-065 6-1/2 16.8
DS9104-070 7 17.3
DS9104-075 7-1/2 17.7
DS9104-080 8 18.1
DS9104-085 8-1/2 18.5
DS9104-090 9 18.9
DS9104-095 9-1/2 19.3
DS9104-100 10 19.7
DS9104-105 10-1/2 20.1
DS9104-110 11 20.6
DS9104-115 11-1/2 21.0
DS9104-120 12 21.4

Key Features

  • Jewelry-grade stainless steel
  • 64kbits NV SRAM
  • 64-bit ROM registration number
  • 256-bit scratchpad
  • Operating range: -40°C to +70°C
  • Full TMEX software support
  • Over 10 years data retention

Quality and Environmental Data

Request Reliability Report for: DS9104 
Lead-Free Package Tin (Sn) Whisker Reports
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

Electronics in Vehicles (ELIV) 2019
10/16/2019 - 10/17/2019, Bonn, Germany
The international VDI Congress ELIV (Electronics In Vehicles) is THE event for all experts in the field of electrical and electronical car engineering and integration of mechanical and electronical systems.