Electrical Engineering Stack Exchange is a question and answer site for electronics and electrical engineering professionals, students, and enthusiasts. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I learned about ECL (Emitter Coupled Logic), but I never found devices or use-cases. Is ECL a historic topic or are there still use-cases?

share|improve this question
up vote 4 down vote accepted

Digi-Key still has thousands of active part numbers. Most Popular are the analog input comparators with extreme speed and symmetrical slew and delay on outputs and also prescaler counters in the 4~5GHz range.

Complementary ECL has its speed and no spikes for egress ( both conducted and radiated) The low noise emission from complementary ouput signals that are perfectly matched cancel each other out and consumes constant supply current, unlike CMOS.

The 100 Series contains temperature compensation.

share|improve this answer
So, these devices are for very high frequences applications? Could you name a typical application? – wollud1969 Dec 3 '12 at 12:34
4.2GHz RF Synth PLL – Tony Stewart Dec 3 '12 at 12:42

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.