What is the difference between TTL & CMOS logic families?
What is the difference between TTL & CMOS logic families?
The main difference between CMOS and TTL is that CMOS (complementary metal-oxide-semiconductor) is an electronic component in the logic family. CMOS is used in computers and various other electronic devices. TTL (transistor-transistor logic) is a type of digital logic in the logic family.
Which logic family is faster TTL or ECL and why?
ECL | Emitter Coupled Logic ECL eliminates saturation and improves speed but uses more power than other logic families such as TTL and CMOS. ECL is fastest logic family among all and this is due to avoidance of saturation region for application.
Which logic family has better performance?
Unipolar Logic Families: It mainly uses Unipolar devices like MOSFETs in addition to passive elements like resistors and capacitors. These logic families have the advantages of high speed and lower power consumption than Bipolar families.
What is TTL logic family and CMOS family?
The types of logic devices are classified in “families”, of which the most important are TTL and CMOS. The main families are: TTL (Transistor-Transistor Logic), made of bipolar transistors. CMOS (Complementary Metal Oxide Semiconductor) made from MOSFETs. ECL (Emitter Coupled Logic) for extremely high speeds.
Which is better CMOS or TTL?
Overall CMOS is the clear winner when it comes to utility. The TTL logic family uses bipolar transistors to perform logic functions and CMOS uses field effect transistors. CMOS generally consumes much less power, despite being more sensitive than TTL.
What is the advantage of CMOS logic as compared to TTL logic?
The main advantage of CMOS logic family is their extremely low power consumption. This is because there is no direct conducting path from Vdd to ground in either of input conditions. So there is practically zero power dissipation in STATIC conditioms.
Which is slowest logic family?
However, CMOS is slowest among the given logic family because of the high input impedance (i.e., due to SiO2) takes more time for charging and discharging.
Which logic family is fastest power dissipation?
Answer. ECL is about the fastest, and CMOS the lowest power.It is fastest digital logic family. Its greatest disadvantage is greater power dissipation. Hence the speed power factor is very less in ecl.
Which logic family has highest fan-out?
CMOS have highest fan out.
Which logic family uses the most power?
Also known as integrated injection circuit (I2C) Current hogging takes place in DCTL….Highest power consumption.
- It is having the best figure of merit (1 Pico joule) among logic families.
- It is having BJT of multiple collectors.
- Due to the absence of a resistor, it uses a small chip area and small power consumption.
What is TTL and MOS?
Comparison between TTL and CMOS technology: TTL stands for Transistor-Transistor Logic. The name is derived from the use of two Bipolar Junction Transistors or BJTs in the design of each logic gate. CMOS stands for Complementary Metal Oxide Semiconductor. TTL is a classification of integrated circuits.
Which is faster between CMOS and TTL?
As the CMOS consists of the FET’s and the TTL circuits are made up of BJT, CMOS chips are much faster and efficient. There is a much higher density of the logic functions in a single chip in CMOS as compared to the TTL.