Testing for Tunneling Opens

  • Authors:
  • James C. M. Li;Edward J. McCluskey

  • Affiliations:
  • -;-

  • Venue:
  • ITC '00 Proceedings of the 2000 IEEE International Test Conference
  • Year:
  • 2000

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Abstract

A tunneling-open failure mode is proposed andcarefully studied. A circuit with a tunneling open couldpass at-speed Boolean tests but fail VLV testing or IDDQtesting. Theoretical calculations as well as Booleanand IDDQ experiments confirm the existence of tunnelingopens. The Murphy experimental data show that sevenout of nine VLV-only failure circuits can be explainedby this failure mode. All these seven circuits survived366 hours temperature burn-in. Finally, a cost effectivescreening strategy is proposed.