Question: Which Is Faster TTL Or ECL?

Which logic family has highest noise margin?

Also note that the noise margin in CMOS is higher than the noise margin in TTL for 5 volt logic levels.

So ……

Which logic family has highest fan out?

CMOS have highest fan out.Fan-out is a term that defines the maximum number of digital inputs that the output of a single logic gate can feed. … Fanout for CMOS gates, is the ratio of the load capacitance (the capacitance that it is driving) to the input gate capacitance.More items…

Which logic family is fastest?

Emitter-coupled logic (ECL)Emitter-coupled logic (ECL) is a BJT-based logic family which is generally considered as the fastest logic available. ECL achieves its high-speed operation by employing a relatively small voltage swing and preventing the transistors from entering the saturation region.

Which of the following logic circuit is the fastest?

ECL3 Answers. ECL is both the fastest logic family and has the simplest internal structure of modern logic families, but like other bipolar-only families it has a not insignificant power draw. It is also incompatible with other logic families due to its signal voltages.

What does RTL mean?

RTLAcronymDefinitionRTLRegister Transfer Level (VHDL)RTLRegister Transfer LevelRTLRetail (hardware or software release in its final version, as opposed to beta)RTLRight to Left49 more rows

What is TTL family?

Transistor–transistor logic (TTL) is a logic family built from bipolar junction transistors. … TTL integrated circuits (ICs) were widely used in applications such as computers, industrial controls, test equipment and instrumentation, consumer electronics, and synthesizers.

What is the use of RTL?

RTL is used in the logic design phase of the integrated circuit design cycle. An RTL description is usually converted to a gate-level description of the circuit by a logic synthesis tool. The synthesis results are then used by placement and routing tools to create a physical layout.

What is the major difference between ECL and TTL?

Difference between TTL, ECL, and CMOSSPECIFICATIONTTLECLComponentsTransistors & passive elementsTransistors & passive elementsBasic GateNANDOR/NORNoise ImmunityStrongGoodFan-out10255 more rows•Dec 11, 2019

What is RTL DTL TTL?

Transistor-transistor logic (TTL) is a class of digital circuits built from bipolar junction transistors (BJT) and resistors. … *TTL contrasts with the preceding resistor-transistor logic (RTL) and diode-transistor logic (DTL) generations by using transistors not only to amplify the output but also to isolate the inputs.

Why is ECL faster than TTL?

ECL is based on use of current steering switch realised using differential transistor pair. 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 is the fastest DTL TTL ECL MOS?

Like ECL, SCL is also the fastest among the logic families.

What is TTL and ECL?

Emitter Coupled Logic (ECL), also referred to as Current Mode Logic families, is a digital technology with extremely high-speed. Transistors are not allowed to go into deep saturation thus, eliminating storage delays like in TTL logic families. Transistors are driven either in cut off or in active region.

Which logic family consumes less power?

CMOSComparing the TTL and CMOS logic families, CMOS has more advantage over the TTL components. It consumes lesser power than the TTL and is more economical as well. The output power of the CMOS is higher and it is smaller in size as well.

Which is faster TTL or CMOS?

TTL chips are generally faster than CMOS gates (but see ACT series), however there are two logic technologies faster than TTL-Emitter-coupled logic (ECL) and gallium arsenide (GaAs). These chips come at considerable cost in power consumption and ease of interface to other logic families.

What are the characteristics of TTL?

The features of the TTL family include the following.Logic low level is at 0 or 0.2V.Logic high level is at 5V.Typical fan out of 10. … A basic TTL device draws a power of almost 10mW, which reduces with the use of Schottky devices.The average propagation delay is about 9ns.The noise margin is about 0.4V.