VLSI Design EE213 VLSI DesignStephen Daniels 2003 Vdd Vss Vo Vin D S D S Pull-Up is always on – Vgs = 0; depletion Pull-Down turns on when Vin > Vt NMOS Depletion Mode Transistor Pull - Up Vt V0 Vdd Vi With no current drawn from outputs, Ids for both transistors is equal Non-...