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The main advantages of CMOS as compared to TTL are
- a)Lower power consumption and better noise margins.
- b)Lower power consumption with low fanout.
- c)Higher speed operation with low power consumption.
- d)Higher power consumption with high fanout.
Correct answer is option 'A'. Can you explain this answer?
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The main advantages of CMOS as compared to TTL area)Lower power consum...
Advantages of CMOS compared to TTL
CMOS (Complementary Metal-Oxide-Semiconductor) and TTL (Transistor-Transistor Logic) are two different types of digital logic families used in integrated circuits. While both have their own advantages and disadvantages, CMOS has certain advantages over TTL. The main advantages of CMOS compared to TTL are:
1. Lower power consumption:
- CMOS circuits are designed to consume significantly less power compared to TTL circuits.
- This is because CMOS logic gates use very little static power when idle, as they do not have a direct path between the power supply and ground.
- TTL circuits, on the other hand, consume more power due to the constant flow of current through the transistor when in the "ON" state.
2. Better noise margins:
- Noise margin refers to the ability of a logic circuit to tolerate noise or interference without affecting its functionality.
- CMOS circuits have better noise margins compared to TTL circuits.
- This is because CMOS logic gates have a wider voltage range for logic "HIGH" and "LOW" states, allowing them to tolerate noise better.
- TTL circuits have narrower voltage ranges, making them more susceptible to noise interference.
3. Compatibility with lower supply voltages:
- CMOS circuits can operate at lower supply voltages, typically ranging from 3V to 5V.
- This makes CMOS more suitable for low-power applications and portable devices.
- TTL circuits, on the other hand, typically require a higher supply voltage in the range of 5V to 6V.
4. Higher resistance to electromagnetic interference (EMI):
- CMOS circuits have a higher resistance to electromagnetic interference compared to TTL circuits.
- This is due to the balanced structure of CMOS gates, which helps in canceling out electromagnetic noise.
- TTL circuits, with their unbalanced structure, are more susceptible to EMI.
In summary, CMOS offers lower power consumption, better noise margins, compatibility with lower supply voltages, and higher resistance to electromagnetic interference compared to TTL. These advantages make CMOS a preferred choice for many modern digital circuits and devices.
CMOS (Complementary Metal-Oxide-Semiconductor) and TTL (Transistor-Transistor Logic) are two different types of digital logic families used in integrated circuits. While both have their own advantages and disadvantages, CMOS has certain advantages over TTL. The main advantages of CMOS compared to TTL are:
1. Lower power consumption:
- CMOS circuits are designed to consume significantly less power compared to TTL circuits.
- This is because CMOS logic gates use very little static power when idle, as they do not have a direct path between the power supply and ground.
- TTL circuits, on the other hand, consume more power due to the constant flow of current through the transistor when in the "ON" state.
2. Better noise margins:
- Noise margin refers to the ability of a logic circuit to tolerate noise or interference without affecting its functionality.
- CMOS circuits have better noise margins compared to TTL circuits.
- This is because CMOS logic gates have a wider voltage range for logic "HIGH" and "LOW" states, allowing them to tolerate noise better.
- TTL circuits have narrower voltage ranges, making them more susceptible to noise interference.
3. Compatibility with lower supply voltages:
- CMOS circuits can operate at lower supply voltages, typically ranging from 3V to 5V.
- This makes CMOS more suitable for low-power applications and portable devices.
- TTL circuits, on the other hand, typically require a higher supply voltage in the range of 5V to 6V.
4. Higher resistance to electromagnetic interference (EMI):
- CMOS circuits have a higher resistance to electromagnetic interference compared to TTL circuits.
- This is due to the balanced structure of CMOS gates, which helps in canceling out electromagnetic noise.
- TTL circuits, with their unbalanced structure, are more susceptible to EMI.
In summary, CMOS offers lower power consumption, better noise margins, compatibility with lower supply voltages, and higher resistance to electromagnetic interference compared to TTL. These advantages make CMOS a preferred choice for many modern digital circuits and devices.
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The main advantages of CMOS as compared to TTL area)Lower power consumption and better noise margins.b)Lower power consumption with low fanout.c)Higher speed operation with low power consumption.d)Higher power consumption with high fanout.Correct answer is option 'A'. Can you explain this answer?
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