{"id":10909,"date":"2024-05-25T19:19:22","date_gmt":"2024-05-25T19:19:22","guid":{"rendered":"https:\/\/www.fambach.net\/?p=10909"},"modified":"2026-10-08T15:37:47","modified_gmt":"2026-10-08T15:37:47","slug":"ttlerklaert","status":"publish","type":"post","link":"https:\/\/www.fambach.net\/en\/ttlerklaert\/","title":{"rendered":"TTL \u2013 Transistor-Transistor Logic ICs"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_89 ez-toc-wrap-left counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Contents\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.fambach.net\/en\/ttl7400\/#Historie\" >History<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.fambach.net\/en\/ttl7400\/#Ansichten\" >Views<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.fambach.net\/en\/ttl7400\/#Fakten\" >Facts<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.fambach.net\/en\/ttl7400\/#Varianten\" >Variations<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.fambach.net\/en\/ttl7400\/#Schottky-TTL\" >Schottky TTL<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.fambach.net\/en\/ttl7400\/#Low-Voltage-TTL\" >Low-Voltage-TTL<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.fambach.net\/en\/ttl7400\/#Open-Collector-Ausgange\" >Open-collector outputs<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.fambach.net\/en\/ttl7400\/#Bezeichnungen\" >Designations<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.fambach.net\/en\/ttl7400\/#Anwendungsbereiche\" >Areas of application<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.fambach.net\/en\/ttl7400\/#Modell_Beispiele\" >Model examples<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.fambach.net\/en\/ttl7400\/#Probleme\" >Problems<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.fambach.net\/en\/ttl7400\/#Sonstiges\" >Miscellaneous<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/www.fambach.net\/en\/ttl7400\/#TTL_ist_uberholt\" >TTL is outdated<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/www.fambach.net\/en\/ttl7400\/#TTL_fur_Lehrzwecke\" >TTL for educational purposes<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/www.fambach.net\/en\/ttl7400\/#Fazit\" >Conclusion<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/www.fambach.net\/en\/ttl7400\/#Verwandte_Beitrage\" >Related Posts<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/www.fambach.net\/en\/ttl7400\/#Quellen\" >Sources<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/www.fambach.net\/en\/ttl7400\/#Log\" >Log<\/a><\/li><\/ul><\/nav><\/div>\n\n<p class=\"wp-block-paragraph\">Ich werde dieses Thema nur kurz umrei\u00dfen, da es im gleichnamigen Wikipedia Artikel gut beschrieben steht. <span class=\"ub-content-link ub-content-link--ok ub-content-link--status-after\"><a href=\"https:\/\/de.wikipedia.org\/wiki\/Transistor-Transistor-Logik\" class=\"ub-content-link__anchor\">https:\/\/de.wikipedia.org\/wiki\/Transistor-Transistor-Logik<\/a><span class=\"ub-status ub-status--ok\" title=\"Link status: OK\"><span class=\"ub-status__icon\" aria-hidden=\"true\">\u25cf<\/span><span class=\"screen-reader-text\">Link status: OK<\/span><\/span><\/span>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">TTL IC\u2019s sind integrierte Schaltkreise mit logischen Verkn\u00fcpfungsgattern wie UND\/ ODER\/ NICHT. Auch  Kombinationen aus ihnen, die zu gr\u00f6\u00dferen integrierten Schaltungen wie Flipflops, Z\u00e4hler, BCD Encoder oder \u00e4hnlichem f\u00fchren, gibt es in der TTL Serie. Die Serie selbst umfasst einige hundert IC Varianten. Manche unterscheiden sich nur hinsichtlich ihrer Pinbelegung. <\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"historie\"><span class=\"ez-toc-section\" id=\"Historie\"><\/span>History<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Diese IC\u2019s wurden in den 1961er Jahren erfunden. Deren g\u00fcnstige Massenproduktion sollte den ansteigenden Bedarf decken. Mit ihrer Erfindung kam eine Art der Normierung der Pins und der Funktion, die es erm\u00f6glichte, die IC zwischen unterschiedlichen Herstellern auszutauschen. Dies ist zum Beispiel sehr gut an den Computern dieser und der Zeit danach zu erkennen, sie sind meist mit Bauteilen unterschiedlicher Hersteller gespickt, weil die Firmen alle IC aufgekauft haben, die auf dem Markt verf\u00fcgbar waren und nicht immer waren alle ICs von einem Hersteller lieferbar. So finden sich beispielsweise im Commodore64 gleiche RAM Chips unterschiedlicher Hersteller.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"ansichten\"><span class=\"ez-toc-section\" id=\"Ansichten\"><\/span>Views<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-3 is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/www.fambach.net\/en\/?attachment_id=10920\"><img loading=\"lazy\" decoding=\"async\" width=\"255\" height=\"142\" data-id=\"10920\" src=\"https:\/\/www.fambach.net\/wp-content\/uploads\/TI_SN7400N-1.jpg\" alt=\"\" class=\"wp-image-10920\" srcset=\"https:\/\/www.fambach.net\/wp-content\/uploads\/TI_SN7400N-1.jpg 255w, https:\/\/www.fambach.net\/wp-content\/uploads\/TI_SN7400N-1-18x10.jpg 18w\" sizes=\"auto, (max-width: 599px) calc(100vw - 50px), (max-width: 767px) calc(100vw - 70px), (max-width: 991px) 429px, (max-width: 1199px) 637px, 354px\"><\/a><figcaption class=\"wp-element-caption\">TTL- 7400 IC<span class=\"ub-content-link ub-content-link--ok ub-content-link--status-after\"><a href=\"https:\/\/de.wikipedia.org\/wiki\/Transistor-Transistor-Logik\" class=\"ub-content-link__anchor\">What<\/a><span class=\"ub-status ub-status--ok\" title=\"Link status: OK\"><span class=\"ub-status__icon\" aria-hidden=\"true\">\u25cf<\/span><span class=\"screen-reader-text\">Link status: OK<\/span><\/span><\/span>)<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/www.fambach.net\/en\/?attachment_id=10919\"><img loading=\"lazy\" decoding=\"async\" width=\"255\" height=\"170\" data-id=\"10919\" src=\"https:\/\/www.fambach.net\/wp-content\/uploads\/FLH101_01.jpg\" alt=\"\" class=\"wp-image-10919\" srcset=\"https:\/\/www.fambach.net\/wp-content\/uploads\/FLH101_01.jpg 255w, https:\/\/www.fambach.net\/wp-content\/uploads\/FLH101_01-18x12.jpg 18w\" sizes=\"auto, (max-width: 599px) calc(100vw - 50px), (max-width: 767px) calc(100vw - 70px), (max-width: 991px) 429px, (max-width: 1199px) 637px, 354px\"><\/a><figcaption class=\"wp-element-caption\">TTL-7400 IC on circuit board<span class=\"ub-content-link ub-content-link--ok ub-content-link--status-after\"><a href=\"https:\/\/de.wikipedia.org\/wiki\/Transistor-Transistor-Logik\" class=\"ub-content-link__anchor\">What<\/a><span class=\"ub-status ub-status--ok\" title=\"Link status: OK\"><span class=\"ub-status__icon\" aria-hidden=\"true\">\u25cf<\/span><span class=\"screen-reader-text\">Link status: OK<\/span><\/span><\/span>)<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"255\" height=\"229\" data-id=\"10918\" src=\"https:\/\/www.fambach.net\/wp-content\/uploads\/7400_Quad_2-input_NAND_Gates-1.jpg\" alt=\"\" class=\"wp-image-10918\" srcset=\"https:\/\/www.fambach.net\/wp-content\/uploads\/7400_Quad_2-input_NAND_Gates-1.jpg 255w, https:\/\/www.fambach.net\/wp-content\/uploads\/7400_Quad_2-input_NAND_Gates-1-13x12.jpg 13w\" sizes=\"auto, (max-width: 599px) calc(100vw - 50px), (max-width: 767px) calc(100vw - 70px), (max-width: 991px) 429px, (max-width: 1199px) 637px, 354px\"><figcaption class=\"wp-element-caption\">TTL \u2013 Interne Logik-Gatter Beschaltung des 7400 (<span class=\"ub-content-link ub-content-link--ok ub-content-link--status-after\"><a href=\"https:\/\/de.wikipedia.org\/wiki\/Transistor-Transistor-Logik\" class=\"ub-content-link__anchor\">What<\/a><span class=\"ub-status ub-status--ok\" title=\"Link status: OK\"><span class=\"ub-status__icon\" aria-hidden=\"true\">\u25cf<\/span><span class=\"screen-reader-text\">Link status: OK<\/span><\/span><\/span>)<\/figcaption><\/figure>\n<\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"fakten\"><span class=\"ez-toc-section\" id=\"Fakten\"><\/span>Facts<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Das Innenleben der IC besteht aus elektronischen Bauteilen, wobei die Schaltvorg\u00e4nge mittels Transistoren und anderer Bauteile realisiert werden. Genormte Pegel sorgen daf\u00fcr, dass die IC\u2019s untereinander austauschbar sind.<\/p>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table id=\"wpls-table-1\"><thead><tr><th>Description<\/th><th>Worth<\/th><\/tr><\/thead><tbody><tr><td>Input high level under load<\/td><td>2.4 V<\/td><\/tr><tr><td>Eingangs LOW Pegel bei Last<\/td><td>Less than 0.4 V<\/td><\/tr><tr><td>Input HIGH level <\/td><td>2.0V<\/td><\/tr><tr><td>Eingangs LOW Pegel <\/td><td>Under 0.8V<\/td><\/tr><tr><td>Output HIGH level<\/td><td>2.4 of 3-4V<\/td><\/tr><tr><td>Output LOW level<\/td><td>Below 0.4V<\/td><\/tr><tr><td>Supply voltage<\/td><td>5V<\/td><\/tr><tr><td>Supply voltage tolerance<\/td><td>+-5%<\/td><\/tr><tr><td>Gate power loss<\/td><td>~10 mW<\/td><\/tr><tr><td>Switching speed<\/td><td>~10 nanoseconds<\/td><\/tr><tr><td><\/td><td><\/td><\/tr><tr><td><\/td><td><\/td><\/tr><\/tbody><\/table><figcaption class=\"wp-element-caption\">TTL Logic Physical Considerations<span class=\"ub-content-link ub-content-link--ok ub-content-link--status-after\"><a href=\"https:\/\/de.wikipedia.org\/wiki\/Transistor-Transistor-Logik\" class=\"ub-content-link__anchor\">What<\/a><span class=\"ub-status ub-status--ok\" title=\"Link status: OK\"><span class=\"ub-status__icon\" aria-hidden=\"true\">\u25cf<\/span><span class=\"screen-reader-text\">Link status: OK<\/span><\/span><\/span>)<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"varianten\"><span class=\"ez-toc-section\" id=\"Varianten\"><\/span>Variations<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Die TTL Logik unterlag vielen \u00c4nderungen. Zum einen wollte man den Energieverbrauch senken und zum anderen die Verarbeitungsgeschwindigkeit erh\u00f6hen. Anf\u00e4nglich ging das eine nur auf Kosten des anderen. Auch f\u00fchrte der Wunsch zur Senkung der Produktionskosten, Produktion immer h\u00f6herer St\u00fcckzahlen sowie die verbesserten M\u00f6glichkeiten und F\u00e4higkeiten der Hersteller zu immer mehr Verbesserungen. <\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"schottky-ttl\"><span class=\"ez-toc-section\" id=\"Schottky-TTL\"><\/span>Schottky TTL<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Hier wird eine sog. Schottky Diode mit verbaut, was den Auf- und Abbau der Ladung im Transistor beg\u00fcnstigt und zu schnelleren Schaltvorg\u00e4ngen bei h\u00f6herem Energieverbrauch f\u00fchrt.<\/p>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table id=\"wpls-table-2\"><thead><tr><th>Description<\/th><th>Worth<\/th><\/tr><\/thead><tbody><tr><td>Switching speed<\/td><td>three ns<\/td><\/tr><tr><td>Gate power loss<\/td><td>20 milliwatts<\/td><\/tr><\/tbody><\/table><figcaption class=\"wp-element-caption\">TTL- Logik \u2013 Schottky Verbesserung der Schaltzeiten zu Lasten des Verbrauchs (<span class=\"ub-content-link ub-content-link--ok ub-content-link--status-after\"><a href=\"https:\/\/de.wikipedia.org\/wiki\/Transistor-Transistor-Logik\" class=\"ub-content-link__anchor\">What<\/a><span class=\"ub-status ub-status--ok\" title=\"Link status: OK\"><span class=\"ub-status__icon\" aria-hidden=\"true\">\u25cf<\/span><span class=\"screen-reader-text\">Link status: OK<\/span><\/span><\/span>)<\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"low-voltage-ttl\"><span class=\"ez-toc-section\" id=\"Low-Voltage-TTL\"><\/span>Low-Voltage-TTL<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Anpassung der TTL Logik auf eine Versorgungsspannung von 3.3V.<\/p>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table id=\"wpls-table-3\"><thead><tr><th>Description<\/th><th>Worth<\/th><\/tr><\/thead><tbody><tr><td>Input voltage LOW<\/td><td>2V \u2013 2,4V<\/td><\/tr><tr><td>Input voltage HIGH<\/td><td>\u22120,4V \u2013 0,8\u00a0V<\/td><\/tr><tr><td>Output voltage LOW<\/td><td>2,4V \u2013 5V?? (ich h\u00e4tte 3.3V erwartet)<\/td><\/tr><tr><td>Output voltage high<\/td><td>0V \u2013 0,4V<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">(<span class=\"ub-content-link ub-content-link--ok ub-content-link--status-after\"><a href=\"https:\/\/de.wikipedia.org\/wiki\/Transistor-Transistor-Logik\" class=\"ub-content-link__anchor\">What<\/a><span class=\"ub-status ub-status--ok\" title=\"Link status: OK\"><span class=\"ub-status__icon\" aria-hidden=\"true\">\u25cf<\/span><span class=\"screen-reader-text\">Link status: OK<\/span><\/span><\/span>)<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"open-collector-ausgaenge\"><span class=\"ez-toc-section\" id=\"Open-Collector-Ausgange\"><\/span>Open-collector outputs<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Die Open Collector Bausteine k\u00f6nnen an einem Bus betrieben werden. Es ist m\u00f6glich, ihre Ausg\u00e4nge hochohmig zu schalten, so dass sie den Bus nicht beeinflussen.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"bezeichnungen\"><span class=\"ez-toc-section\" id=\"Bezeichnungen\"><\/span>Designations<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The TTL components are named as follows <\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>74 TTL Reihe<\/li>\n\n\n\n<li>XXXX Characteristics<\/li>\n\n\n\n<li>YYYY Type <\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">By way of example, a 74LS00. <\/p>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table id=\"wpls-table-4\"><thead><tr><th>Properties<\/th><th>Designation<\/th><\/tr><\/thead><tbody><tr><td>Low Power<\/td><td>L<\/td><\/tr><tr><td>High-Speed<\/td><td>H<\/td><\/tr><tr><td>Schottky (hohe Geschwindigkeit \/ hohe Verlustleistung)<\/td><td>S<\/td><\/tr><tr><td>Fast-Schottky (Noch schneller ???)<\/td><td>F<\/td><\/tr><tr><td>Low Power + Schottky<\/td><td>LS<\/td><\/tr><tr><td>Advanced Power + Schottky<\/td><td>AS <\/td><\/tr><tr><td>Advanced Power + Low Power  + Schottky<\/td><td>Motor neurone disease<\/td><\/tr><tr><td>High Speed CMOS (Supply Voltage 3-6V)<\/td><td>HC<\/td><\/tr><tr><td>Advanced High Speed CMOS (Supply Voltage (3-6V)<\/td><td>AHC \/ AC<\/td><\/tr><tr><td>How HC only TTL compatible (supply voltage 5V)<\/td><td>HCT<\/td><\/tr><tr><td>How AC only TTL compatible (supply voltage 5V)<\/td><td>ACT<\/td><\/tr><\/tbody><\/table><figcaption class=\"wp-element-caption\">Pins<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">TTL Logik \u2013 Varianten <\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"anwendungsbereiche\"><span class=\"ez-toc-section\" id=\"Anwendungsbereiche\"><\/span>Areas of application<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Computer of the time<\/li>\n\n\n\n<li>Logic circuit for controls<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"modell-beispiele\"><span class=\"ez-toc-section\" id=\"Modell_Beispiele\"><\/span>Model examples<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Hier nur ein paar Beispiele, f\u00fcr eine vollst\u00e4ndige Liste sei auf <span class=\"ub-content-link ub-content-link--ok ub-content-link--status-after\"><a href=\"https:\/\/www.mikrocontroller.net\/articles\/74xx\" class=\"ub-content-link__anchor\">https:\/\/www.mikrocontroller.net\/articles\/74xx<\/a><span class=\"ub-status ub-status--ok\" title=\"Link status: OK\"><span class=\"ub-status__icon\" aria-hidden=\"true\">\u25cf<\/span><span class=\"screen-reader-text\">Link status: OK<\/span><\/span><\/span> referred.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table id=\"wpls-table-5\"><thead><tr><th>74xx<\/th><th><\/th><\/tr><\/thead><tbody><tr><td><span class=\"ub-content-link ub-content-link--ok ub-content-link--status-after\"><a href=\"https:\/\/www.fambach.net\/en\/ttl7400\/\" data-type=\"post\" data-id=\"10794\" target=\"_blank\" rel=\"noreferrer noopener\" class=\"ub-content-link__anchor\">00<\/a><span class=\"ub-status ub-status--ok\" title=\"Link status: OK\"><span class=\"ub-status__icon\" aria-hidden=\"true\">\u25cf<\/span><span class=\"screen-reader-text\">Link status: OK<\/span><\/span><\/span>\/ 10\/ 20\/ 30<\/td><td>4\/3\/2\/1 NAND gates with 2\/3\/4\/8 inputs each<\/td><\/tr><tr><td>01\/ 12\/ 22<\/td><td>4\/ 3\/ 2\/ 1 NAND gates with open collector, each with 2\/3\/4 inputs<\/td><\/tr><tr><td>02\/ 27\/ 25 \/28<\/td><td>4\/3\/2\/2 Nor gates with 2\/3\/4\/4 inputs respectively<\/td><\/tr><tr><td>03<\/td><td>4\/ NAND gate open collector with 2 inputs<\/td><\/tr><tr><td>04<\/td><td>6 * Inverter<\/td><\/tr><tr><td>05<\/td><td>6 Inverter Open Collector<\/td><\/tr><tr><td>06<\/td><td>Inverter Buffer\/Driver (OC) 30V<\/td><\/tr><tr><td>07<\/td><td>Buffer\/Driver (OC)<\/td><\/tr><tr><td>13<\/td><td>4-input NAND\u00a0<span class=\"ub-content-link ub-content-link--ok ub-content-link--status-after\"><a href=\"https:\/\/www.mikrocontroller.net\/articles\/Schmitt-Trigger\" class=\"ub-content-link__anchor\">Schmitt trigger<\/a><span class=\"ub-status ub-status--ok\" title=\"Link status: OK\"><span class=\"ub-status__icon\" aria-hidden=\"true\">\u25cf<\/span><span class=\"screen-reader-text\">Link status: OK<\/span><\/span><\/span><\/td><\/tr><tr><td>14<\/td><td>Inverter Schmitt-Trigger<\/td><\/tr><tr><td><\/td><td><\/td><\/tr><tr><td><\/td><td><\/td><\/tr><tr><td><\/td><td><\/td><\/tr><tr><td><\/td><td><\/td><\/tr><tr><td><\/td><td><\/td><\/tr><tr><td><\/td><td><\/td><\/tr><tr><td><\/td><td><\/td><\/tr><tr><td><\/td><td><\/td><\/tr><tr><td><\/td><td><\/td><\/tr><tr><td><\/td><td><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"probleme\"><span class=\"ez-toc-section\" id=\"Probleme\"><\/span>Problems<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u2013<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"sonstiges\"><span class=\"ez-toc-section\" id=\"Sonstiges\"><\/span>Miscellaneous<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"ttl-ist-ueberholt\"><span class=\"ez-toc-section\" id=\"TTL_ist_uberholt\"><\/span>TTL is outdated<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Die Zeit der TTL Logiken ist vorbei. Letztendlich l\u00f6ste die CMOS Serie die TTL IC\u2019s ab und diese wurde durch speicherprogrammierbare Schaltungen\/ Microcontroller mit viel mehr F\u00e4higkeiten und Einsatzzwecken abgel\u00f6st. Heutige Microcontroller erm\u00f6glichen es, komplexe logische Verkn\u00fcpfungen mittels Software zu realisieren, ohne am Aufbau der Hardware etwas zu \u00e4ndern. Auch k\u00f6nnen sie in unterschiedlichen Ger\u00e4ten wiederverwendet werden. Ein Atmel Controller kann zum Beispiel eine Waschmaschine, einen Toaster, einen Verst\u00e4rker oder die Batterieversorgung eines Notebooks steuern. Wo die Hersteller fr\u00fcher hunderte ICs auf Lager halten mussten, ist es heute nur noch ein einziger, der alle Logiken abdecken kann, leicht mit wenigen Bauteilen zu beschalten und g\u00fcnstig in der Herstellung ist.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"ttl-fuer-lehrzwecke\"><span class=\"ez-toc-section\" id=\"TTL_fur_Lehrzwecke\"><\/span>TTL for educational purposes<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">F\u00fcr die Lehre haben diese Bausteine immer noch Bestand. Sie vermitteln logisches Verst\u00e4ndnis, sind leicht auf Steckbrettern zu verdrahten. Ein IC wie der 7400 mit 4 Gattern und 16 Beinen ist leichter zu verstehen als ein komplexer Atmel Controller mit 32 Beinen, der zudem auch noch programmiert werden muss.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"fazit\"><span class=\"ez-toc-section\" id=\"Fazit\"><\/span>Conclusion<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Ich finde die TTL Logik immer noch faszinierend. Schaltungen auf Steckbrettern auszuprobieren hat etwas ausgesprochen Befriedigendes, da es eine fast kreative und handwerkliche T\u00e4tigkeit ist. Auch gestaltet sich die Fehlersuche leicht, alles, was man braucht ist ein Messger\u00e4t.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"verwandte-beitraege\"><span class=\"ez-toc-section\" id=\"Verwandte_Beitrage\"><\/span>Related Posts<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<ul class=\"display-posts-listing\"><li class=\"listing-item\"><span class=\"ub-content-link ub-content-link--ok ub-content-link--status-after\"><a class=\"title ub-content-link__anchor\" href=\"https:\/\/www.fambach.net\/en\/ttl7402\/\">TTL IC 7402<\/a><span class=\"ub-status ub-status--ok\" title=\"Link status: OK\"><span class=\"ub-status__icon\" aria-hidden=\"true\">\u25cf<\/span><span class=\"screen-reader-text\">Link status: OK<\/span><\/span><\/span><\/li><li class=\"listing-item\"><span class=\"ub-content-link ub-content-link--ok ub-content-link--status-after\"><a class=\"title ub-content-link__anchor\" href=\"https:\/\/www.fambach.net\/en\/ttlerklaert\/\">TTL \u2013 Transistor Transistor Logik IC\u2019s<\/a><span class=\"ub-status ub-status--ok\" title=\"Link status: OK\"><span class=\"ub-status__icon\" aria-hidden=\"true\">\u25cf<\/span><span class=\"screen-reader-text\">Link status: OK<\/span><\/span><\/span><\/li><li class=\"listing-item\"><span class=\"ub-content-link ub-content-link--ok ub-content-link--status-after\"><a class=\"title ub-content-link__anchor\" href=\"https:\/\/www.fambach.net\/en\/ttl7400\/\">TTL IC 7400<\/a><span class=\"ub-status ub-status--ok\" title=\"Link status: OK\"><span class=\"ub-status__icon\" aria-hidden=\"true\">\u25cf<\/span><span class=\"screen-reader-text\">Link status: OK<\/span><\/span><\/span><\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"quellen\"><span class=\"ez-toc-section\" id=\"Quellen\"><\/span>Sources<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><span class=\"ub-content-link ub-content-link--broken ub-content-link--status-after is-broken\"><a href=\"https:\/\/de.wikipedia.org\/wiki\/Transistor-Transistor-Logik.\" class=\"ub-content-link__anchor\" title=\"This link appears to be broken.\">https:\/\/de.wikipedia.org\/wiki\/Transistor-Transistor-Logik.<\/a><span class=\"ub-status ub-status--broken\" title=\"Link status: Broken\"><span class=\"ub-status__icon\" aria-hidden=\"true\">\u25cf<\/span><span class=\"screen-reader-text\">Link status: Broken<\/span><\/span><\/span><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><span class=\"ub-content-link ub-content-link--ok ub-content-link--status-after\"><a href=\"https:\/\/www.elektronik-kompendium.de\/service\/ttlcode.php\" class=\"ub-content-link__anchor\">TTL Code Database<\/a><span class=\"ub-status ub-status--ok\" title=\"Link status: OK\"><span class=\"ub-status__icon\" aria-hidden=\"true\">\u25cf<\/span><span class=\"screen-reader-text\">Link status: OK<\/span><\/span><\/span><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><span class=\"ub-content-link ub-content-link--ok ub-content-link--status-after\"><a href=\"https:\/\/www.elektronik-kompendium.de\/sites\/dig\/0205282.htm\" class=\"ub-content-link__anchor\">https:\/\/www.elektronik-kompendium.de\/sites\/dig\/0205282.htm<\/a><span class=\"ub-status ub-status--ok\" title=\"Link status: OK\"><span class=\"ub-status__icon\" aria-hidden=\"true\">\u25cf<\/span><span class=\"screen-reader-text\">Link status: OK<\/span><\/span><\/span><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><span class=\"ub-content-link ub-content-link--unknown ub-content-link--status-after\"><a href=\"https:\/\/sourceforge.net\/projects\/circuit%20(Logik%20Simu,%20Verwende%20ich%20f%C3%BCr%20meine%20Zeichnungen)\" class=\"ub-content-link__anchor\">https:\/\/sourceforge.net\/projects\/circuit (Logic Sim - I use this for my drawings)<\/a><span class=\"ub-status ub-status--unknown\" title=\"Link status: Unknown\"><span class=\"ub-status__icon\" aria-hidden=\"true\">\u25cf<\/span><span class=\"screen-reader-text\">Link status: Unknown<\/span><\/span><\/span><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><span class=\"ub-content-link ub-content-link--ok ub-content-link--status-after\"><a href=\"https:\/\/www.mikrocontroller.net\/articles\/74xx\" class=\"ub-content-link__anchor\">https:\/\/www.mikrocontroller.net\/articles\/74xx<\/a><span class=\"ub-status ub-status--ok\" title=\"Link status: OK\"><span class=\"ub-status__icon\" aria-hidden=\"true\">\u25cf<\/span><span class=\"screen-reader-text\">Link status: OK<\/span><\/span><\/span><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"log\"><span class=\"ez-toc-section\" id=\"Log\"><\/span>Log<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>","protected":false},"excerpt":{"rendered":"<p>Are TTL logic ICs dated, or still good for DIYers and learning?.<\/p>\n<a href=\"https:\/\/www.fambach.net\/en\/ttl7400\/\" class=\"read-more-link\">Carry on reading <span class=\"screen-reader-text\">\"TTL IC 7400\"<\/span> <span class=\"meta-nav\">\u2192<\/span><\/a>","protected":false},"author":1,"featured_media":10952,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_lmt_disableupdate":"","_lmt_disable":"","footnotes":""},"categories":[784],"tags":[799,787,802,801,800,786,798],"class_list":["post-10909","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ttl","tag-74xx","tag-ic","tag-integrierte-schaltung","tag-logik","tag-transistor","tag-ttl","tag-ttl-74xx","penguin-post","penguin-post-not-sticky"],"modified_by":"sfambach","_links":{"self":[{"href":"https:\/\/www.fambach.net\/en\/wp-json\/wp\/v2\/posts\/10909","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.fambach.net\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.fambach.net\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.fambach.net\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.fambach.net\/en\/wp-json\/wp\/v2\/comments?post=10909"}],"version-history":[{"count":17,"href":"https:\/\/www.fambach.net\/en\/wp-json\/wp\/v2\/posts\/10909\/revisions"}],"predecessor-version":[{"id":18456,"href":"https:\/\/www.fambach.net\/en\/wp-json\/wp\/v2\/posts\/10909\/revisions\/18456"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.fambach.net\/en\/wp-json\/wp\/v2\/media\/10952"}],"wp:attachment":[{"href":"https:\/\/www.fambach.net\/en\/wp-json\/wp\/v2\/media?parent=10909"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.fambach.net\/en\/wp-json\/wp\/v2\/categories?post=10909"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.fambach.net\/en\/wp-json\/wp\/v2\/tags?post=10909"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}