Switch Level Modeling

  • Donald E. Thomas
  • Philip R. Moorby


Designs at the logic level of abstraction, describe a digital circuit in terms of primitive logic functions such as OR, and NOR, etc., and allow for the nets interconnecting the logic functions to carry 0, 1, x and z values. At the analog-transistor level of modeling, we use an electronic model of the circuit elements and allow for analog values of voltages or currents to represent logic values on the interconnections.


Logic Level NAND Gate Gate Output Pull Strength Strong Drive 


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Copyright information

© Springer Science+Business Media New York 1995

Authors and Affiliations

  • Donald E. Thomas
    • 1
  • Philip R. Moorby
    • 2
  1. 1.Carnegie Mellon UniversityUSA
  2. 2.Symplify CorporationUSA

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