{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SN74LS03DR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"SN74LS03DR","canonicalUrl":"https://icboms.com/texas-instruments/SN74LS03DR","factsUrl":"https://icboms.com/api/mcp/products/SN74LS03DR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments 74LS series, Quad 2-Input NAND Gate with Open Collector Outputs, 14-SOIC Surface Mount, 4.75V-5.25V Supply, 0°C to 70°C, Tape & Reel.","salesMarkdown":"## Open-collector output — what it means for the bus The SN74LS03DR is a quad 2-input NAND gate from the 74LS low-power Schottky family. Its defining feature is the open-collector output: the output transistor's collector is left unconnected internally, so the high-level output voltage is determined by an external pull-up resistor tied to a supply rail — typically 5 V or a higher voltage the downstream logic can tolerate. This means the part can drive a wired-AND bus where multiple open-collector outputs share a common pull-up: any gate pulling low forces the bus low, which is the standard architecture for interrupt lines, I²C-like handshaking, or shared reset signals. The propagation delay is 32 ns typical at 5 V with a 15 pF load — a 74LS-class speed that keeps up with most 5 V microprocessor buses running below 10 MHz. The input thresholds are 0.8 V (low) and 2.0 V (high), compatible with standard 5 V TTL and CMOS logic families.","metaTitle":"SN74LS03DR Texas Instruments 74LS Quad 2-Input NAND","metaDescription":"Texas Instruments SN74LS03DR quad 2-input NAND gate with open-collector outputs. 4.75V-5.25V supply, 32ns propagation delay. Active, ROHS3 compliant.","metaKeywords":null},"attributes":{"series":"74LS","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Series":"74LS","Package":"Tape & Reel (TR); Cut Tape (CT)","Features":"Open Collector","Logic Type":"NAND 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 (TA)","Input Logic Level - Low":"0.8V","Supplier Device Package":"14-SOIC","Input Logic Level - High":"2V","Current - Output High, Low":"250µA, 16mA","Max Propagation Delay @ V, Max CL":"32ns @ 5V, 15pF"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.04","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.04000","currency":"USD"},{"qty":10,"price":"$0.93200","currency":"USD"},{"qty":25,"price":"$0.88440","currency":"USD"},{"qty":100,"price":"$0.72650","currency":"USD"},{"qty":250,"price":"$0.67916","currency":"USD"},{"qty":500,"price":"$0.60018","currency":"USD"},{"qty":1000,"price":"$0.47382","currency":"USD"},{"qty":2500,"price":"$0.44700","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/2da7e5693437f67840628bbcf6df1ee0.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Will the SN74LS03DR drop into a board designed for the SN74LVC2G132DCUR?","answer":"No — these are not pin-compatible. The SN74LS03DR is a quad gate in a 14-SOIC on a 5 V rail with commercial temperature range. They share the NAND function but are different footprints, supply voltages, and temperature grades."},{"question":"What compliance documentation does Texas Instruments provide for the SN74LS03DR?","answer":"The part is ROHS3 compliant. Standard Texas Instruments documentation includes the datasheet, RoHS certificate of compliance, and material declaration. No UL or IEC certification is listed in the available records."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/SN74LS03DR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/SN74LS03DR when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:45:10.375Z","lastPublished":"2026-07-22T19:45:10.375Z","indexable":true}}