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Which gate is used by ECL?
During voltage transitions, CMOS logic gates cause transient disturbances in the power-supply voltage. A major advantage of ECL is that the current-steering behavior of the input stage (i.e., Q1 and Q2) does not cause disturbances in the way that CMOS switching does.
What is ECL gate?
In electronics, emitter-coupled logic (ECL) is a high-speed integrated circuit bipolar transistor logic family. A variation of ECL in which all signal paths and gate inputs are differential is known as differential current switch (DCS) logic.
Is CMOS faster than ECL?
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 best logic family for CMOS and ECL?
ECL – Emitter Coupled Logic: Suitable for systems requiring high-speed operations. MOS – Metal Oxide Semiconductor Logic: Suitable for systems with high component density.
What makes an ECL circuit current mode logic?
It is also called as current mode logic. The design of ECL circuit consists of transistors and resistors. By preventing the transistor from entering into saturation, the high-speed operation is achieved in ECL logic family.
How are the transistors of an ECL logic family connected?
ECL families use overdriven BJT differential amplifiers with single-ended inputs. The emitters of the transistors are connected all together, hence the name ‘emitter-coupled’ logic families.
How are logic gates used in an analog circuit?
CL. You have to remember logic gates like invertors are really just simple analog circuits, comparators, tailored to work well with an analog input signal that basically has two stable states, high and low. As such, just like you can use op-amps as logic devices, simple logic devices can also be used in an analog role.