ESD protection for the tolerant I/O circuits using PESD implantation

Howard T.H. Tang*, S. S. Chen, Scott Liu, M. T. Lee, C. H. Liu, M. C. Wang, M. C. Jeng

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)


In this paper, we propose an electrostatic discharge (ESD) solution with cascode structure for deep-submicron integrated circuits technology to enhance its ESD robustness. Using the added boron implantation (we call "PESD" implantation here) at the drain side of the stacked n-type metal-oxide semiconductor (NMOS), the long-base parasitic NPN (i.e., emitter, base and collector in the bipolar transistor are n-type, p-type, and n-type, respectively) bipolar transistor in the cascode NMOS structure can be easily triggered by the Zener breakdown mechanism at the drain side under ESD stress conditions. Based on UMC 0.25 μ process, this method provides a significant improvement in the cascode ESD performance.

Original languageEnglish
Pages (from-to)293-300
Number of pages8
JournalJournal of Electrostatics
Issue number3-4
Publication statusPublished - 2002 Mar
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Biotechnology
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Electrical and Electronic Engineering


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