{"id":52,"date":"2026-02-09T00:00:00","date_gmt":"2026-02-08T15:00:00","guid":{"rendered":"https:\/\/www.ic-koukogaku.com\/?p=52"},"modified":"2026-02-10T04:39:49","modified_gmt":"2026-02-09T19:39:49","slug":"7%e3%82%bb%e3%82%b0%e3%83%87%e3%82%b3%e3%83%bc%e3%83%801-7446-7447-74ls47-%e7%b3%bb","status":"publish","type":"post","link":"https:\/\/www.ic-koukogaku.com\/?p=52","title":{"rendered":"7\u30bb\u30b0\u30c7\u30b3\u30fc\u30c0(1) 7446\/7447\/74LS47 \u7cfb"},"content":{"rendered":"\n

SN7447AN<\/h3>\n\n\n\n
\"\"<\/figure>\n\n\n\n

\"\"7446, 7447 \u306f BCD \u3092\u5165\u529b\u3057\u3066 7 \u30bb\u30b0\u30e1\u30f3\u30c8\u8868\u793a\u5668\u306e\u99c6\u52d5\u4fe1\u53f7\u3092\u51fa\u529b\u3059\u308b IC \u3067\u3059\u3002<\/p>\n\n\n\n

7447A \u306f\u30aa\u30fc\u30d7\u30f3\u30b3\u30ec\u30af\u30bf\u51fa\u529b\u3067\u300115V 40mA \u307e\u3067\u306e\u99c6\u52d5\u304c\u53ef\u80fd\u3067\u3059\u30027446 (30V) \u3088\u308a\u3082\u8010\u5727\u304c\u4f4e\u3044\u305f\u3081\u3001\u4fa1\u683c\u3082\u82e5\u5e72\u5b89\u304b\u3063\u305f\u3082\u306e\u3068\u601d\u3044\u307e\u3059\u3002\u4f8b\u3048\u3070\u30c8\u30e9\u6280\u8a8c 1975\/9 \u63b2\u8f09\u306e TI \u793e\u76f4\u8ca9\u4fa1\u683c\u3092\u6bd4\u8f03\u3059\u308b\u3068\u3001SN7446AN \u304c\uffe5500 \u306b\u5bfe\u3057\u3066 SN7447AN \u306f\uffe5440 \u3067\u3057\u305f\u3002<\/p>\n\n\n\n

7447 \u7cfb\u306e\u30d4\u30f3\u914d\u7f6e\u3068\u6a5f\u80fd<\/h3>\n\n\n\n
\"Pasted<\/figure>\n\n\n\n

<\/p>\n\n\n\n

A,B,C,D<\/strong>: BCD \u5165\u529b<\/p>\n\n\n\n

a,b,c,d,e,f,g<\/strong> \u30bb\u30b0\u30e1\u30f3\u30c8\u51fa\u529b<\/p>\n\n\n\n

\u30aa\u30fc\u30d7\u30f3\u30b3\u30ec\u30af\u30bf\u30027446, 7447 \u306f “ON”\u3067 L \u51fa\u529b\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n

\/LT<\/strong>: \u30e9\u30f3\u30d7\u30c6\u30b9\u30c8<\/p>\n\n\n\n

L \u5165\u529b\u3067\u5168\u30bb\u30b0\u30e1\u30f3\u30c8\u70b9\u706f\u3002<\/p>\n\n\n\n

\/RBI<\/strong>: \u30ea\u30d7\u30eb\u30d6\u30e9\u30f3\u30af\u5165\u529b<\/p>\n\n\n\n

L \u5165\u529b\u304b\u3064 A-D \u304c “LLLL” \u306e\u3068\u304d\u5168\u30bb\u30b0\u30e1\u30f3\u30c8\u3092\u6d88\u706f\u3057\u3066\u3001RBO \u306b L \u3092\u51fa\u529b\u3057\u307e\u3059\u3002<\/p>\n\n\n\n

\u4e0a\u4f4d\u6841\u306e \/RBO \u51fa\u529b\u3068\u63a5\u7d9a\u3059\u308b\u3053\u3068\u3067\u30bc\u30ed\u30b5\u30d7\u30ec\u30b9\u3068\u306a\u308a\u307e\u3059\u3002\u3053\u306e\u5834\u5408\u3001\u6700\u4e0a\u4f4d\u6841\u306f L \u63a5\u7d9a\u3068\u3057\u307e\u3059\u3002<\/p>\n\n\n\n

\/RBO<\/strong>: \u30ea\u30d7\u30eb\u30d6\u30e9\u30f3\u30af\u51fa\u529b<\/p>\n\n\n\n

RBI \u6a5f\u80fd\u306b\u3088\u308a\u30bb\u30b0\u30e1\u30f3\u30c8\u304c\u6d88\u706f\u3057\u3066\u3044\u308b\u3068\u304d\u3001L \u3092\u51fa\u529b\u3057\u307e\u3059\u3002\u4e0b\u4f4d\u6841\u306e \/RBI \u3068\u63a5\u7d9a\u3059\u308b\u3053\u3068\u3067\u30bc\u30ed\u30b5\u30d7\u30ec\u30b9\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n

\/RBO \u306f\u5185\u90e8\u3067\u30d6\u30e9\u30f3\u30af\u5236\u5fa1\u4fe1\u53f7\u3068\u63a5\u7d9a\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u5916\u90e8\u304b\u3089 L \u306b\u5f15\u3063\u5f35\u308b\u3053\u3068\u3067\u8868\u793a\u3092\u6d88\u706f\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\/RBO \u7aef\u5b50\u306f\u901a\u5e38\u306e TTL \u51fa\u529b\u3067\u306f\u306a\u304f\u3001\u5185\u90e8\u30d7\u30eb\u30a2\u30c3\u30d7\u3068\u306a\u3063\u3066\u3044\u308b\u306e\u3067\u3001\u5916\u90e8\u304b\u3089\u30aa\u30fc\u30d7\u30f3\u30b3\u30ec\u30af\u30bf\u3067\u30c9\u30e9\u30a4\u30d6\u3059\u308b\u3053\u3068\u3067\u660e\u308b\u3055\u5909\u8abf\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n

7447 \u306e\u30d5\u30a9\u30f3\u30c8<\/h3>\n\n\n\n
\"\"<\/figure>\n\n\n\n
\"\"<\/figure>\n\n\n\n

679 \u306f\u9375\u306a\u3057\u3067\u3059\u3002\u307e\u305f\u3001A-E \u306b\u306f\u5909\u306a\u8a18\u53f7\u3092\u8868\u793a\u3057\u307e\u3059\u304c\u3001\u30e1\u30fc\u30ab\u306f\u300c0-F \u307e\u3067 16 \u901a\u308a\u306e\u5165\u529b\u3092\u533a\u5225\u53ef\u80fd\u300d\u3068\u8a00\u3063\u3066\u3044\u307e\u3059\u3002F \u306f\u30d6\u30e9\u30f3\u30af\u8868\u793a\u3068\u3057\u3066\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n

SN7446AN<\/h3>\n\n\n\n
\"\"<\/figure>\n\n\n\n

7446A \u306f\u30aa\u30fc\u30d7\u30f3\u30b3\u30ec\u30af\u30bf\u51fa\u529b\u3067\u300130V 40mA \u307e\u3067\u306e\u99c6\u52d5\u304c\u53ef\u80fd\u3067\u3059\u3002\u30d4\u30f3\u914d\u7f6e\u3068\u6a5f\u80fd\u306f 7447 \u3068\u540c\u3058\u3067\u3059\u3002<\/p>\n\n\n\n

7447 \u3068\u306e\u9055\u3044\u306f\u8010\u5727\u3060\u3051\u306a\u306e\u3067\u30017447 \u304c\u306a\u3044\u3068\u304d\u306f 7446 \u3067\u3082\u554f\u984c\u306a\u304f\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n

7447\/74LS47 \u306e\u5fdc\u7528\u56de\u8def<\/h3>\n\n\n\n
\"\"<\/figure>\n\n\n\n

\u56f3\u306e\u56de\u8def\u306f 3\u6841\u30b9\u30bf\u30c6\u30a3\u30c3\u30af\u8868\u793a\u56de\u8def\u3092\u69cb\u6210\u3057\u307e\u3059\u3002\u30b3\u30e2\u30f3\u30a2\u30ce\u30fc\u30c9\u306e 7 \u30bb\u30b0\u30e1\u30f3\u30c8 LED \u3092\u99c6\u52d5\u3057\u307e\u3059\u3002<\/p>\n\n\n\n

\u30bc\u30ed\u30b5\u30d7\u30ec\u30b9\u56de\u8def\u306b\u3088\u308a\u3001\u4e0a\u4f4d\u6841\u306e 0 \u306f\u8868\u793a\u3057\u307e\u305b\u3093\u3002\u305f\u3068\u3048\u3070 001 \u306f “1” \u3068\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n

RBO \u7aef\u5b50\u306b\u63a5\u7d9a\u3057\u305f 7407 (OC Buffer) \u306e\u5165\u529b\u306b PWM \u4fe1\u53f7\u3092\u5165\u308c\u308b\u3068\u660e\u308b\u3055\u3092\u8abf\u6574\u3067\u304d\u307e\u3059\u3002\u901a\u5e38 TTL \u51fa\u529b\u306f T.P. \u3067\u3059\u304c\u3001\u3053\u308c\u3089\u306e IC \u306e RBO \u306f 74 \u30b7\u30ea\u30fc\u30ba\u552f\u4e00\u306e\u4f8b\u5916\u3067 Wired-OR \u53ef\u80fd\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n

\u30b9\u30bf\u30f3\u30c0\u30fc\u30c9 TTL \u306e MSI \u306e\u6d88\u8cbb\u96fb\u529b\u306f\u5927\u304d\u3044\u305f\u3081\u3001\u6841\u3054\u3068\u306b\u3053\u306e IC \u3092 1 \u3064\u4f7f\u7528\u3059\u308b\u3068\u6d88\u8cbb\u96fb\u529b\u306b\u6ce8\u610f\u304c\u5fc5\u8981\u3067\u3059\u30027447 1 \u3064\u306e\u6d88\u8cbb\u96fb\u6d41\u306f 100mA \u3092\u8d85\u3048\u307e\u3059\u3002\u901a\u5e38\u30017447 \u306f\u30e9\u30c3\u30c1 7475 \u3084 BCD \u30ab\u30a6\u30f3\u30bf 7490 \u3068\u7d44\u307f\u5408\u308f\u305b\u3066\u30ab\u30a6\u30f3\u30bf\u3092\u69cb\u6210\u3057\u307e\u3059\u304c\u3001\u305d\u306e\u5834\u5408\u306f\u6d88\u8cbb\u96fb\u529b\u3067\u3042\u3063\u3061\u3063\u3061\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n

7446\/7447 \u306e\u30c9\u30e9\u30a4\u30d0\u6bb5<\/h3>\n\n\n\n
\"\"<\/figure>\n\n\n\n

7446A\/7447A \u306f\u30aa\u30fc\u30d7\u30f3\u30b3\u30ec\u30af\u30bf\u51fa\u529b\u3067\u300140mA \u307e\u3067\u51fa\u529b\u53ef\u80fd\u306a\u306e\u3067\u3001\u62b5\u6297\u3092\u4ecb\u3057\u3066 LED \u3092\u30c9\u30e9\u30a4\u30d6\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n

LED \u30c9\u30e9\u30a4\u30d0\u3068\u3057\u3066\u306f\u9ad8\u96fb\u5727\u30fb\u9ad8\u96fb\u6d41\u3067\u3059\u3002\u306a\u305c\u8010\u5727\u304c\u5927\u304d\u3044\u304b\u3068\u3044\u3046\u3068\u3001\u5f53\u6642\u306f LED \u3088\u308a\u3082\u30d5\u30a3\u30e9\u30e1\u30f3\u30c8\u3092\u4f7f\u7528\u3059\u308b\u8868\u793a\u5668\u306e\u65b9\u304c\u30dd\u30d4\u30e5\u30e9\u3060\u3063\u305f\u3053\u3068\u304c\u80cc\u666f\u306b\u3042\u308b\u3067\u3057\u3087\u3046\u3002\u30bb\u30b0\u30e1\u30f3\u30c8\u8868\u793a\u5668\u3068\u3057\u3066\u306f\u3001\u5404\u30bb\u30b0\u30e1\u30f3\u30c8\u306e\u4e2d\u306b\u8c46\u96fb\u7403\u3092\u57cb\u3081\u8fbc\u3093\u3060\u3088\u3046\u306a\u8868\u793a\u5668\uff08\u30e2\u30b6\u30a4\u30af\u8868\u793a\u5668\uff09\u3084\u3001\u30d5\u30a3\u30e9\u30e1\u30f3\u30c8\u8868\u793a\u7ba1\u304c\u3088\u304f\u4f7f\u7528\u3055\u308c\u3066\u3044\u307e\u3057\u305f\u3002\u56fd\u5185\u3067\u306f\u5bcc\u58eb\u96fb\u5b50\u306e\u30df\u30cb\u30c8\u30ed\u30f3\u304c\u6709\u540d\u3067\u3057\u305f\u304c\u3001LED \u306e\u767b\u5834\u3067\u4f1a\u793e\u81ea\u4f53\u304c\u306a\u304f\u306a\u3063\u3066\u3057\u307e\u3044\u307e\u3057\u305f\u3002<\/p>\n\n\n\n

\u3053\u308c\u3089\u306e\u30b7\u30ea\u30fc\u30ba\u306f LSTTL \u5316\u3055\u308c\u3066\u3044\u307e\u3059\u304c\u300174LS47 \u306e\u767b\u5834\u6642\u306f\u3059\u3067\u306b LED \u6642\u4ee3\u3068\u306a\u3063\u3066\u304a\u308a\u3001\u305d\u308c\u3092\u524d\u63d0\u306b 7447A \u306740mA \u3042\u3063\u305f\u51fa\u529b\u96fb\u6d41\u304c 24mA \u306b\u5909\u66f4\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n

\u672b\u5c3e “A” \u306a\u3057\u54c1<\/h3>\n\n\n\n
\"\"<\/figure>\n\n\n\n

7446\/7447 \u306f 1971\u5e74\u3054\u308d\u672b\u5c3e “A” \u3064\u304d\u306b\u5909\u308f\u3063\u3066\u3044\u307e\u3059\u3002\u30aa\u30ea\u30b8\u30ca\u30eb\u306e “A” \u306a\u3057\u54c1\u306f \u30c9\u30e9\u30a4\u30d0\u6bb5\u304c\u7570\u306a\u308a\u300120mA \u306e\u51fa\u529b\u96fb\u6d41\u5b9a\u683c\u3067\u3059\u3002\uff087447A \u3067\u306f40mA\uff09<\/p>\n\n\n\n

<\/p>\n","protected":false},"excerpt":{"rendered":"

SN7447AN 7446, 7447 \u306f BCD \u3092\u5165\u529b\u3057 …<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[12,8],"tags":[],"class_list":["post-52","post","type-post","status-publish","format-standard","hentry","category-7-segment-decoder","category-ttl-ic"],"_links":{"self":[{"href":"https:\/\/www.ic-koukogaku.com\/index.php?rest_route=\/wp\/v2\/posts\/52","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ic-koukogaku.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ic-koukogaku.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ic-koukogaku.com\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ic-koukogaku.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=52"}],"version-history":[{"count":7,"href":"https:\/\/www.ic-koukogaku.com\/index.php?rest_route=\/wp\/v2\/posts\/52\/revisions"}],"predecessor-version":[{"id":68,"href":"https:\/\/www.ic-koukogaku.com\/index.php?rest_route=\/wp\/v2\/posts\/52\/revisions\/68"}],"wp:attachment":[{"href":"https:\/\/www.ic-koukogaku.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=52"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ic-koukogaku.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=52"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ic-koukogaku.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=52"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}