The basic circuit element is based on a difference amplifier, as shown in the diagram (ignoring dashed lines). In this symmetrical circuit the combined emitter current flowing through the resistor Re is substantially constant. If the voltage Vi is equal to Vref then each transistor, Q1 and Q2, conducts by the same amount and the output is at Vref. If Vi is increased above Vref by more than about 0.1 volts, Q1 will be turned on while Q2 turns off. As a result Vo increases to V+. Similarly if Vi is decreased below Vref by more than about 0.1 volts, Vo will decrease to some value largely determined by VEE, Re, and Rc.
By placing transistors in parallel with Q1, as shown by the dashed lines, an ECL OR gate is produced. Additional buffering is required on the gate output to provide the correct voltage swings for subsequent gate inputs.
ECL provided the highest speed of any silicon-based logic family but its high power dissipation and the need for high levels of integration mean that it has been superseded by CMOS technology.
"ECL." A Dictionary of Computing. . Encyclopedia.com. (March 22, 2018). http://www.encyclopedia.com/computing/dictionaries-thesauruses-pictures-and-press-releases/ecl
"ECL." A Dictionary of Computing. . Retrieved March 22, 2018 from Encyclopedia.com: http://www.encyclopedia.com/computing/dictionaries-thesauruses-pictures-and-press-releases/ecl
Encyclopedia.com gives you the ability to cite reference entries and articles according to common styles from the Modern Language Association (MLA), The Chicago Manual of Style, and the American Psychological Association (APA).
Within the “Cite this article” tool, pick a style to see how all available information looks when formatted according to that style. Then, copy and paste the text into your bibliography or works cited list.
Because each style has its own formatting nuances that evolve over time and not all information is available for every reference entry or article, Encyclopedia.com cannot guarantee each citation it generates. Therefore, it’s best to use Encyclopedia.com citations as a starting point before checking the style against your school or publication’s requirements and the most-recent information available at these sites:
Modern Language Association
The Chicago Manual of Style
American Psychological Association
- Most online reference entries and articles do not have page numbers. Therefore, that information is unavailable for most Encyclopedia.com content. However, the date of retrieval is often important. Refer to each style’s convention regarding the best way to format page numbers and retrieval dates.
- In addition to the MLA, Chicago, and APA styles, your school, university, publication, or institution may have its own requirements for citations. Therefore, be sure to refer to those guidelines when editing your bibliography or works cited list.
• Electronics emitter-coupled logic
"ECL." The Oxford Dictionary of Abbreviations. . Encyclopedia.com. (March 22, 2018). http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/ecl
"ECL." The Oxford Dictionary of Abbreviations. . Retrieved March 22, 2018 from Encyclopedia.com: http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/ecl