{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SN74ACT7801-20FN","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"SN74ACT7801-20FN","canonicalUrl":"https://icboms.com/texas-instruments/SN74ACT7801-20FN","factsUrl":"https://icboms.com/api/mcp/products/SN74ACT7801-20FN","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments SN74ACT7801-20FN, synchronous FIFO, 1Kx18 organization, 20 ns access time, Bulk package, current lifecycle stage.","salesMarkdown":"## Synchronous FIFO for bus buffering The Texas Instruments SN74ACT7801-20FN is a synchronous FIFO memory organized 1Kx18 with a 20 ns access time. It provides a dedicated buffering stage for data streams that need to cross clock domains or absorb burst traffic without back-pressure stalling the bus. Typical applications include telecom line cards, data-acquisition front-ends, and DSP co-processor interfaces where the write and read clocks run independently. ## 20 ns access — what it buys the bus The 20 ns access time sets the minimum cycle window for reading a word out of the FIFO. ## RoHS non-compliance — BOM impact This part is marked RoHS non-compliant. That means it contains lead (Pb) in the solder finish or die-attach above the exemption threshold. For a design that must ship under full RoHS, you will need an exemption letter or a compliant alternative. For legacy builds, military, or high-reliability programs that still allow tin-lead, it is business as usual.","metaTitle":"SN74ACT7801-20FN FIFO 1Kx18 20ns Synchronous Active","metaDescription":"TI SN74ACT7801-20FN synchronous FIFO, 1Kx18 organization, 20 ns access time. Active lifecycle, RoHS non-compliant.","metaKeywords":null},"attributes":{"series":"*","packageCase":null,"mountingType":null,"rohsStatus":"RoHS non-compliant","productStatus":"Active","categoryPath":["DC-DC Power Modules"],"specifications":{"Series":"*","Package":"Bulk","lifecycle_stage":"eol_hot"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$7.32","stockQuantity":0,"priceTiers":[{"qty":41,"price":"$7.32000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/851895221ff5d5108d665b8bf32fee70.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is an alternative or replacement for SN74ACT7801-20FN?","answer":"The closest functional second-source candidates in the same ACT family are the SN74ACT72241L20RJ and SN74ACT72231L20RJ, both synchronous FIFOs with similar timing. Verify pin-compatibility and depth against your BOM before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/SN74ACT7801-20FN","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/SN74ACT7801-20FN 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}}