As compared to TTL, CMOS logic hasa)high speed of operationb)higher power dissipationc)smaller physical sized)none of the aboveCorrect answer is option 'C'. Can you explain this answer?

Question

Answer

Option(1)- Schottky transistors are preferred for TTL logic systems. These transistors portray the Schottky effect and thus have higher switching speed in comparison to CMOS logic family.So option 1 is false.
Option(2)- TTL dissipates a lot of power where as CMOS uses almost no power in the static state (that is, when inputs are not changing). So option 2 is false.
Option(3)- TTL requires more space and isolation in comparison to CMOS logic family. The required silicon area for implementing CMOS is very small. So option 3 is true.

Answer

Physical Size:
- CMOS logic typically has a smaller physical size compared to TTL logic. This is because CMOS technology allows for more components to be packed into a smaller area due to its lower power consumption and smaller transistor size.

Speed of Operation:
- TTL logic generally has a faster speed of operation compared to CMOS logic. This is because TTL uses bipolar transistors which switch faster than CMOS transistors. However, CMOS technology has been continuously improving its speed over the years and in some cases can now match or even surpass TTL speeds.

Power Dissipation:
- CMOS logic has lower power dissipation compared to TTL logic. This is because CMOS transistors consume power only when they switch, whereas TTL transistors draw current continuously. As a result, CMOS logic is more energy efficient and produces less heat.

Conclusion:
- In conclusion, CMOS logic has a smaller physical size and lower power dissipation compared to TTL logic. However, TTL logic may have a slight edge in terms of speed of operation, although CMOS technology has made significant improvements in this area.

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