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What is the major advantage of ECL logic?

very high speed
wide range of operating voltage
very low cost
very high power

Correct Answer: very high speed

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More Questions from Logic Families and Their Characteristics

Interfacing (74HCMOS to 74ALSTTl or 74TTL to 74LSTTL) can be done with no danger.
The AND is the simplest of the gates, requiring the least amount of circuitry to implement in TTL.
Propagation delay in TTL is due to slow switching speeds.
A pulse is not perfectly square; it takes time for the digital level to rise from 0 up to 1 and to fall from 1 down to 0.
In TTL the noise margin is between 0.8 V and 0.4 V.
PMOS and NMOS are commonly used for small memories and microprocessors.
In ECL, the HIGH and LOW levels are determined by which transistor in a differential amplifier is conducting more.
The basic part numbers of ICs are the same regardless of the manufacturer because digital logic ICs have been standardized.
Schottky logic overcomes the saturation and stored charge problem by placing a Schottky diode across the base-to-collector junction.
A typical fan-out for most TTL is 9.

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