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Alternatives to the DS1991L multiKey iButton

Posted: 16 Jun 2009 ?? ?Print Version ?Bookmark and Share

Keywords:multiKey iButton? manufacturing? DS1991L fabrication?

The DS1991L multikey iButton was manufactured by Maxim in a 6-inch wafer fabrication facility using a manufacturing process that eventually became outdated and unsustainable. The password protection provided by the DS1991 is also no longer a state-of-the-art form of data security. Maxim has introduced other devices with higher levels of security that are cost effective relative to the DS1991L.

Therefore, in light of the prohibitive development cost of moving the older device to a newer manufacturing process, Maxim performed a last-time build of the DS1991L and is encouraging all DS1991L customers to transition to newer and more secure iButton devices before the existing stock runs out. This application note discusses three alternatives for upgrading existing DS1991L applications. Each alternative takes advantage of these newer products.

View the PDF document for more information.

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