HCMOS: Difference between revisions

'''HCMOS''', ''("high-speed [[CMOS]]'' oj is khloés dad,") is the set of specifications for electrical ratings and characteristics, forming the 74HC00 family, a part of the [[7400 series]] of [[integrated circuits]].<ref name="philips">[http://www.standardics.nxp.com/support/documents/logic/pdf/family.hcmos.specification.pdf HCMOS family characteristics] {{Deadwebarchive|url=https://web.archive.org/web/20080720001502/http://www.standardics.nxp.com/support/documents/logic/pdf/family.hcmos.specification.pdf link|date=May2008-07-20 2017}}, Philips Semiconductors, March 1988</ref>

The 74HC00 family followed, and improved upon, the 74C00 series (which provided an alternative CMOS logic family to the [[4000 series]] but retained the part number scheme and pinouts of the standard [[7400 series]] (especially the 74LS00 series)) .

* '''HCT''' stands for high-speed CMOS with [[transistor–transistor logic]] voltages. These devices are similar to the HCMOS types except they will operate at standard [[Transistor–transistor_logic|TTL]] power supply voltages and logic input levels. This allows for direct pin-to-pin compatible CMOS replacements to reduce power consumption without loss of speed. <ref>[http://ics.nxp.com/support/documents/logic/pdf/family.hcmos.specification.pdf "HCMOS family characteristics" ics.nxp.com] {{Deadwebarchive|url=https://web.archive.org/web/20110911131108/http://ics.nxp.com/support/documents/logic/pdf/family.hcmos.specification.pdf link|date=May2011-09-11 2017}}</ref>

* '''HCU''' stands for high-speed CMOS un-buffered. This type of CMOS contains no buffer and is ideal for crystals and other ceramic oscillators needing linearity. <ref>[http://www.ecsxtal.com/store/pdf/cer_prin.pdf "Ceramic Resonator Applications" www.ecsxtal.com]</ref>

* '''VHCMOS''', or '''AHC''', stands for very high-speed CMOS or advanced high-speed CMOS. <ref>Ayers, John E. "Digital Integrated Circuits: Analysis and Design, Second Edition". CRC Press, December 15, 2003. p17.</ref> Typical [[propagation delay]] time is between 3 ns and 4 ns. The speed is similar to Bipolar [[Schottky transistor]] [[Transistor–transistor logic|TTL]]. <ref>[http://www.semicon.toshiba.co.jp/docs/datasheet/en/LogicIC/TC74VHC125F_TC74VHC126FT_en_datasheet_071001.pdf "TOSHIBA CMOS Digital Integrated Circuit" www.semicon.toshiba.co.jp] {{Deadwebarchive|url=https://web.archive.org/web/20120420034729/http://www.semicon.toshiba.co.jp/docs/datasheet/en/LogicIC/TC74VHC125F_TC74VHC126FT_en_datasheet_071001.pdf link|date=May2012-04-20 2017}}</ref>

* '''AHCT''' stands for advanced high-speed CMOS with [[Transistor–transistor_logic|TTL]] inputs. Typical [[propagation delay]] time is between 5 ns and 6 ns. <ref>[http://focus.ti.com/paramsearch/docs/parametricsearch.tsp?familyId=1&family=logic&uiTemplateId=SZ_T&parameter=2582704419&techFamId=5&military=no "AHCT - Advanced High-Speed CMOS" focus.ti.com] {{Deadwebarchive|url=https://archive.today/20120710182613/http://focus.ti.com/paramsearch/docs/parametricsearch.tsp?familyId=1&family=logic&uiTemplateId=SZ_T&parameter=2582704419&techFamId=5&military=no link|date=May2012-07-10 2017}}</ref> <ref>{{Cite [web |url=http://www.ti.com/lit/ml/sgyn133/sgyn133.pdf |title="Advanced High-Speed CMOS Logic" www.ti.com] |access-date=2012-02-07 |archive-date=2011-09-05 |archive-url=https://web.archive.org/web/20110905005506/http://www.ti.com/lit/ml/sgyn133/sgyn133.pdf |url-status=dead }}</ref> <ref>[http://ics.nxp.com/products/ahc/overview/ "AHC(T) family overview" ics.nxp.com] {{Deadwebarchive|url=https://web.archive.org/web/20120604051611/http://ics.nxp.com/products/ahc/overview/ link|date=May2012-06-04 2017}}</ref>