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1. Design and Implementation of VLSI Systems
(EN0160)
lecture03

2. Recap
nMOS pMOS
Source Gate Drain Source Gate Drain
Polysilicon Polysilicon
SiO2 SiO2
n+ n+ p+ p+
p bulk Si n bulk Si

3. 3-input NANDs

4. Series-Parallel Combinations

5. What are the transistor schematics of the
NOR gate?

6. And-Or-Inverter (AOI) gate

7. Transmission gate

8. Tri-state inverter

9. Multiplexer (MUX)

10. Latch design

11. Flip-flop (edge triggered) design

12. Summary
• Introduction to VLSI systems and the semiconductor industry
• Basic overview of pn junctions and MOS transistors
• Designing digital logic gates using transistors
• HW1 is out and the due date is Wednesday February 6