FAST XOR-XNOR CIRCUIT
- 1. Proposed circuit for fast XOR-XNOR operations Presented by:Ila Sharma(102001) Harsh Magotra (102012)
- 2. Introduction to our Idea Considering the earlier designs for XOR-XNOR CIRCUIT, we are introducing an idea to make the circuit more fast, noise immune, low voltage consuming…… so we have come with a circuit having less no. of CMOS and posses all the above said features.
- 3. What is XOR GATE?
- 4. What is XNOR gate?
- 5. XOR CircuitVDDababXOR gate using CMOS
- 6. XNOR CircuitVDDbaabXNOR using CMOS
- 7. Primitive XOR-XNOR CIRCUITThis circuit mostly find use in design of multipliers, comparators, converters..etc.
- 10. More time delay
- 11. Skewed outputProposed XOR-XNOR CIRCUIT-Have 8 transistors-Consume LESS power-LESS time delay-REMOVES Skewed output problem-More noise tolerant
- 12. Individual units of proposed XOR-XNOR circuit
- 13. Comparison between the two Earlier circuitProposed circuitXOR CircuitVDDabab
- 14. XNOR CircuitVDDbaabEarlier circuit Proposed circuit
- 15. Design metricsHow to evaluate the performance of the circuit???CostSpeedPower dissipationDelays Noise tolerance
- 16. Noise tolerancewe use the noise immunity curves, NIC to measure the noise-tolerance of XOR-XNOR circuits.The noise immunity curve ,NIC of a digital gate is a locus of points (Tn, Vn) for which the gate just makes a logic error.The higher the NIC of a gate, the less susceptible is the gate to noise.
- 17. conclusionA new XOR-XNOR circuit implementation has been proposed and it seems that our proposal may be particularly suited for low voltage requirements. From our point of view the most important output of the described proposal is emerging hope that proposed circuit would find use in fast arithmetic operations and will be more noise immune.
- 18. Thank you…………