Cell Heights we have used

• SCMOS library (0.8u, 1.2 u library)

  • 68 lambda - designed for 2 layer routing, cell height was kept small

• GCMOS library (0.5u)

  • 100 lambda - designed for 3 layer routing, wanted multiple drive strengths

• RadTolerant Library (0.5u)

  • 150 lambda - required guard rings around PMOS, NMOS transistor sites which pushed cell height up

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