1. Implementing a generic logic function in CMOS
IUCEE Workshop: VLSI Design July 7th to 11th 2008 Tutor: Prof. A. Mason
Implementing a generic logic function in CMOS
By:Ms.SAVITA.SONOLI
AP & Head in IT Dept
PDIT,HOSPET
KARNATAKA

2. Pre-requirements Parameters nMOS pMOS Symbol OFF Open Switch ON
Switching
Characteristics
Vin=1
ON / Closed Switch
OFF / Open Switch
Vin=0
OFF
Open Switch ON
Closed Switch
Pass
Passes good Low (0)
Passes good High (1)

3. Pre-requirements
DeMorgan’s Rules

4. Pre-requirements

5. Learning objectives Implementation of logic gates in COMS NOT AND OR
NOR
NAND

6. NOT GATE

7. NOR GATE
Inverting the inputs we can build
AND gate

8. NAND GATE
Inverting the inputs we can build
OR gate

9. Simplified TRUTH-TABLE
Inputs
Outputs A B
NAND OR
NOR
AND 1

10. HOMEWORK
Implement XOR and XNOR gates.

11. Acknowledgement
Prof.Mason
Group mates

12. Thank you