Level Restoring
to reduce static power
- pass transistors used in interconnect
- lose Vt voltage on "logic high"
- problem: static power
- downstream logic and buffers leak
- possible solutions
- gate boosting - unreliable
- multiple Vt design - unavailable
- level restoring
- level restoring works
- sensitive to transistor sizing
- falltime increases (fights restoring pullup)
- problem: falltime can be infinity!!
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