Skip to main content

logic family

logic family A range of electronic devices that is made by the same manufacturing technique and provides a number of logic functions. The range includes logic gates, flip-flops, and counters. Families in common use are ECL and TTL, which are based on bipolar transistors, and the NMOS and CMOS families, which are based on MOSFETs.

Logic families vary as regards switching speed, propagation delay, and power dissipation, although developments in the fabrication technology of the different families often improve these characteristics. A member of a logic family whose output changes state typically within a few nanoseconds (10–9 seconds) is considered a high-speed logic device. These devices are also characterized by short propagation delays, also in the order of a few nanoseconds. A particular family is characterized by its delay-power product, a figure of merit that is frequently quoted in catalogues. See also logic circuit.

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"logic family." A Dictionary of Computing. . 23 Mar. 2019 <>.

"logic family." A Dictionary of Computing. . (March 23, 2019).

"logic family." A Dictionary of Computing. . Retrieved March 23, 2019 from

Learn more about citation styles

Citation styles 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, cannot guarantee each citation it generates. Therefore, it’s best to use 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 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.