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Tradeoffs of cell library track height

Discussion in 'Programming/Internet' started by Randomblue, Oct 8, 2018.

  1. Randomblue

    Randomblue Guest

    Standard cell libraries commonly come in various track heights (e.g. 6T and 7.5T). What are is tradeoff space for track heights?

    I was under the impression that larger track heights mean:

    1. More area (bad)
    2. More power (bad)
    3. More performance (good)

    However I was recently told by an expert that "bigger is better" is a misconception for performance. The stated reason is that as you upsize transistors they tend to drive other transistors, so they just load each other.

    If larger track heights do not improve performance, what are the benefits of large track heights?

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