{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SN74128NSR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"SN74128NSR","canonicalUrl":"https://icboms.com/texas-instruments/SN74128NSR","factsUrl":"https://icboms.com/api/mcp/products/SN74128NSR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments SN74128NSR, 7400 series, quad 2-input NOR gate, 14-SOIC (0.209\", 5.30mm width), surface mount, 4.75V–5.25V supply, 18ns propagation delay @ 5V/150pF, 0°C to 70°C.","salesMarkdown":"## Quad 2-input NOR gate in 14-SOIC — what it is and where it fits The Texas Instruments SN74128NSR is a quad 2-input NOR gate from the 7400 series, in a 14-SOIC package for surface-mount assembly. It operates from a 4.75 V to 5.25 V supply and is rated over 0°C to 70°C. ## 18 ns propagation delay — timing margin for legacy 5 V buses Maximum propagation delay is 18 ns at 5 V and 150 pF. Output high is 42.4 mA, output low is 48 mA. ## Active lifecycle and ROHS3 compliance — no obsolescence risk The SN74128NSR carries an active lifecycle status and is ROHS3 compliant.","metaTitle":"SN74128NSR NOR Gate, 4-Ch 2-Input, 14-SOIC, 18ns","metaDescription":"TI SN74128NSR quad 2-input NOR gate in 14-SOIC. 4.75V–5.25V supply, 18ns propagation delay at 5V/150pF. Active, ROHS3 compliant.","metaKeywords":null},"attributes":{"series":"7400","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Series":"7400","Package":"Tape & Reel (TR); Cut Tape (CT)","Logic Type":"NOR Gate","Mounting Type":"Surface Mount","Package / Case":"14-SOIC (0.209\\\", 5.30mm 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-SO","Input Logic Level - High":"2V","Current - Output High, Low":"42.4mA, 48mA","Max Propagation Delay @ V, Max CL":"18ns @ 5V, 150pF"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.95","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$2.95000","currency":"USD"},{"qty":10,"price":"$2.64900","currency":"USD"},{"qty":25,"price":"$2.50440","currency":"USD"},{"qty":100,"price":"$2.17040","currency":"USD"},{"qty":250,"price":"$2.05904","currency":"USD"},{"qty":500,"price":"$1.84758","currency":"USD"},{"qty":1000,"price":"$1.55820","currency":"USD"},{"qty":2000,"price":"$1.66950","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/c38c26343ca031c8163cd17958e15f46.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is SN74128NSR RoHS compliant?","answer":"Yes, it is ROHS3 compliant."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/SN74128NSR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/SN74128NSR when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}