{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SN74LS09D","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"SN74LS09D","canonicalUrl":"https://icboms.com/texas-instruments/SN74LS09D","factsUrl":"https://icboms.com/api/mcp/products/SN74LS09D","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments 74LS series, quad 2-input AND gate with open-collector outputs, 14-SOIC (0.154\", 3.90mm Width) surface-mount package, 4.75V~5.25V supply, 0°C~70°C operating temperature.","salesMarkdown":"## Open-collector AND gate for wired-OR and level-shifting The SN74LS09D is a quad 2-input AND gate from the 74LS low-power Schottky family, with open-collector outputs. The open-collector stage sinks up to 8 mA per output (the '-, 8mA' figure in the spec table) but cannot source current — this means each output must be pulled up to the desired logic-high voltage through an external resistor. Typical uses include driving a wired-OR interrupt bus where multiple gates share a common pull-up, or level-shifting a 5 V logic signal to a higher-voltage rail (up to the breakdown voltage of the output transistor, typically 15 V for 74LS). ## Propagation delay and timing budget Maximum propagation delay is 35 ns at 5 V supply with a 15 pF load. This is the time from any input crossing the 1.5 V threshold to the output reaching 50% of its final swing. For a bus running at 10 MHz (100 ns period), 35 ns eats over a third of the cycle — budget this into the setup-and-hold margin if the gate sits in a critical timing path. The 74LS series is faster than the original 74 TTL (typically 10 ns vs 15 ns per gate) but slower than 74ALS or 74F. ## Supply and temperature: 5 V TTL, commercial grade The part draws its supply current from the VCC pin; typical ICC for the 74LS09 is about 6 mA per package (all gates switching). Input logic levels are TTL-compatible: low at 0.8 V max, high at 2 V min. ## Package and board fit: 14-SOIC The supplier device package is 14-SOIC — standard footprint, no thermal pad. The tube packaging means parts ship in anti-static tubes of 50 or 100, not tape-and-reel; if your pick-and-place line expects reeled parts, confirm the tube-to-reel transfer or order a reeled variant (the 'D' suffix typically indicates SOIC, but the 'R' suffix would indicate tape-and-reel).","metaTitle":"TI SN74LS09D 74LS Quad 2-Input AND Gate, Open Collector","metaDescription":"Texas Instruments SN74LS09D quad 2-input AND gate with open-collector outputs. Active production, ROHS3 compliant, 14-SOIC. Sourced to order; request a quote.","metaKeywords":null},"attributes":{"series":"74LS","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Series":"74LS","Package":"Tube","Features":"Open Collector","Logic Type":"AND Gate","Mounting Type":"Surface Mount","Package / Case":"14-SOIC (0.154\\\", 3.90mm Width)","lifecycle_stage":"eol_hot","Number of Inputs":"2","Voltage - Supply":"4.75V ~ 5.25V","Number of Circuits":"4","Operating Temperature":"0°C ~ 70°C","Input Logic Level - Low":"0.8V","Supplier Device Package":"14-SOIC","Input Logic Level - High":"2V","Current - Output High, Low":"-, 8mA","Max Propagation Delay @ V, Max CL":"35ns @ 5V, 15pF"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.35","priceTiers":[{"qty":1,"price":"$1.35000","currency":"USD"},{"qty":10,"price":"$1.21000","currency":"USD"},{"qty":25,"price":"$1.14880","currency":"USD"},{"qty":100,"price":"$0.94350","currency":"USD"},{"qty":250,"price":"$0.88196","currency":"USD"},{"qty":500,"price":"$0.77942","currency":"USD"},{"qty":1000,"price":"$0.61533","currency":"USD"},{"qty":2500,"price":"$0.58050","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/e3b867429f30ae20dd066d6a95a9d003.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/SN74LS09D/alternatives.json"},"ai":{"faq":[{"question":"Will SN74LS09D drop into a board specified around SN74ALS11ANS?","answer":"No. The SN74ALS11ANS is a triple 3-input AND gate in a different package (14-SOIC but different pinout — inputs A, B, C per gate vs A, B per gate). The SN74LS09D has four 2-input gates; the SN74ALS11ANS has three 3-input gates. They are not footprint-compatible."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/SN74LS09D","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/SN74LS09D when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}