{"product_id":"74155n-74ls155-dual-2-to-4-line-decoderdemultiplexer-dip-16","title":"74155N 74LS155 Dual 2-to-4 Line DecoderDemultiplexer (DIP-16)","description":"\u003ch2 dir=\"ltr\" class=\"text-text-100 mt-3 -mb-1 text-[1.125rem] font-bold\"\u003eDescription\u003c\/h2\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eThe 74LS155 is a \u003cstrong\u003eDual 2-to-4 Line Decoder\/Demultiplexer\u003c\/strong\u003e IC in the TTL Low-Power Schottky (LS) logic family, housed in a standard \u003cstrong\u003e16-pin DIP\u003c\/strong\u003e through-hole package. It features two 1-of-4 decoder\/demultiplexer sections with common binary-address inputs and individual strobe (enable) inputs, allowing each 4-bit section to be activated or inhibited independently.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eWhen both sections are enabled via their strobes, the common address inputs sequentially select and route the associated input data to the appropriate output of each section. A useful design detail: data applied to input C1 is inverted at its outputs, while data applied at input C2 passes through true — the inverter on the C1 data input allows the chip to also be configured as a 3-to-8-line decoder or 1-to-8-line demultiplexer without needing external gating. Input clamping diodes are included to minimize transmission-line effects and simplify system design. The individual strobes also make it easy to cascade multiple chips together for decoding or demultiplexing larger data words.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eThis flexibility makes the 74LS155 a popular building block in classic digital logic design, memory address decoding, data routing, and multiplexer\/demultiplexer circuits.\u003c\/p\u003e\n\u003ch2 dir=\"ltr\" class=\"text-text-100 mt-2 -mb-1 text-base font-bold\"\u003eKey Specifications\u003c\/h2\u003e\n\u003cul dir=\"ltr\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3 print:block print:space-y-1\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eFunction:\u003c\/strong\u003e Dual 2-to-4 line decoder \/ dual 1-to-4 line demultiplexer\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eLogic Family:\u003c\/strong\u003e TTL, Low Power Schottky (LS)\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003ePackage:\u003c\/strong\u003e 16-pin PDIP (through-hole)\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eSupply Voltage:\u003c\/strong\u003e 4.75V–5.25V (5V nominal)\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eOperating Temperature:\u003c\/strong\u003e 0°C to 70°C\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eOutput Current (Low):\u003c\/strong\u003e 8mA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 dir=\"ltr\" class=\"text-text-100 mt-2 -mb-1 text-base font-bold\"\u003eCommon Applications\u003c\/h2\u003e\n\u003cul dir=\"ltr\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3 print:block print:space-y-1\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eDual 2-to-4-line decoder \u003cspan class=\"inline-flex\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eDual 1-to-4-line demultiplexer \u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e3-to-8-line decoder and 1-to-8-line demultiplexer (via C1 inversion, no external gating needed)\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eMemory address decoding and general digital logic control\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eCascading for larger decoding\/demultiplexing word widths\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 dir=\"ltr\" class=\"text-text-100 mt-2 -mb-1 text-base font-bold\"\u003ePackage Includes\u003c\/h2\u003e\n\u003cul dir=\"ltr\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3 print:block print:space-y-1\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e1 x 74LS155 IC (16-pin DIP)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"digilog.pk","offers":[{"title":"Default Title","offer_id":51631162392854,"sku":null,"price":0.0,"currency_code":"PKR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0744\/0764\/1366\/files\/74LS155_Dual2-to-4LineDecoderDemultiplexer_DIP-16.jpg?v=1785488233","url":"https:\/\/digilog.pk\/products\/74155n-74ls155-dual-2-to-4-line-decoderdemultiplexer-dip-16","provider":"digilog.pk","version":"1.0","type":"link"}