Editing 7400-series integrated circuits (section)

{{Short description|Series of transistor–transistor logic integrated circuits}}
{{redirect-multi|5|8400 series|7400 series|6400 series|5400 series|74 series|other uses|8400 (disambiguation){{!}}8400|and|7400 (disambiguation){{!}}7400|and|6400 (disambiguation){{!}}6400|and|5400 (disambiguation){{!}}5400|and|74 (disambiguation)}}
{{redirect-multi|3|7402|7404|7486|the highway|Hawaii Route 7402|the asteroids|(7402) 1987 YH|and| (7404) 1988 AA5|and|7486 Hamabe|the military unit|7486th Air Defense Group}}
[[File:TexasInstruments 7400 chip, view and element placement.jpg|thumb|alt=Upper half is a line diagram showing four NAND gate symbols in a rectangle. Lower half is a photo of a grey rectangular integrated circuit package with metal pins on the two long sides, and lettering on top as described in the caption|The SN7400N chip contains four two-input [[NAND gate]]s. The SN prefix indicates it was manufactured by [[Texas Instruments]].<ref>{{cite book |title=Digital Logic IC |author=R. M. Marston |date=31 October 1996 |page=21 |publisher=Newnes |isbn=9780750630184 |url=https://books.google.com/books?id=cjt462Rr90wC&q=7400+manufacturer+codes+texas+instruments&pg=PA21
|access-date=October 14, 2017}}</ref> The N suffix is a vendor-specific code indicating plastic [[Dual in-line package|DIP]] packaging. The second line of numbers (7645) is a date code; this chip was manufactured in the 45th week of 1976.<ref>{{Cite web|url=http://homepages.nildram.co.uk/~wylie/ICs/monolith.htm|archive-url=https://web.archive.org/web/20180504074623/http://homepages.nildram.co.uk/~wylie/ICs/monolith.htm|url-status=dead|title=The first monolithic integrated circuits|last=Wylie|first=Andrew|date=2013|archive-date=May 4, 2018|access-date=2019-01-19}}</ref>]]

The '''7400 series''' is a popular [[logic family]] of [[transistor–transistor logic]] (TTL) [[integrated circuit]]s (ICs).<ref>Don Lancaster (1975), ''TTL Cookbook'', Indianapolis: Howard W. Sams and Co., {{ISBN|0-672-21035-5}}, preface</ref>

In 1964, [[Texas Instruments]] introduced the SN5400 series of logic chips, in a ceramic [[semiconductor package]]. A low-cost plastic package SN7400 series was introduced in 1966 which quickly gained over 50% of the logic chip market, and eventually becoming ''de facto'' standardized electronic components.<ref name=":0">{{cite web |title=1963: Standard Logic IC Families Introduced |url=https://www.computerhistory.org/siliconengine/standard-logic-ic-families-introduced/ |website=[[Computer History Museum]] |archive-url=https://web.archive.org/web/20190723094744/https://www.computerhistory.org/siliconengine/standard-logic-ic-families-introduced/ |archive-date=July 23, 2019 |url-status=live}}</ref><ref name="TI_1967_Databook">{{cite book |title=1967-68 Integrated Circuits Catalog |publisher=[[Texas Instruments]] |url=https://archive.org/details/bitsavers_tidataBookts196768_16942634 |access-date=July 23, 2019}}</ref>  Since the introduction of the original bipolar-transistor  TTL parts,  [[Pin-compatibility|pin-compatible]] parts were introduced with such features as  low power [[CMOS]] technology and [[LVCMOS|lower supply voltages]]. [[Surface-mount technology|Surface mount packages]] exist for several popular logic family functions.<ref name="TI_2004_LRG">{{cite web |title=Logic Reference Guide: Bipolar, BiCMOS, and CMOS Logic Technology |url=http://focus.ti.com/lit/ml/scyb004b/scyb004b.pdf |website=[[Texas Instruments]] |archive-url=https://web.archive.org/web/20190723105156/http://www.ti.com/lit/ml/scyb004b/scyb004b.pdf |archive-date=July 23, 2019 |date=2004 |url-status=live}}</ref>