{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"54F189FLQB","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"54F189FLQB","canonicalUrl":"https://icboms.com/texas-instruments/54F189FLQB","factsUrl":"https://icboms.com/api/mcp/products/54F189FLQB","rawCanonicalId":null},"summary":{"shortDescription":"Fairchild 54F189FLQB standard SRAM, 16x4 organization, 32 ns access time, CMOS technology, Bulk package.","salesMarkdown":"## Part identity and function The Fairchild 54F189FLQB is a standard SRAM organized as 16 words by 4 bits, with a 32 ns access time, built in CMOS technology. It serves as a small, fast scratchpad or cache buffer in legacy digital systems where a 16x4 memory array is sufficient — think address translation tables, microcode storage, or FIFO-like staging in older bus architectures. ## What the 32 ns access time means for the bus The 32 ns access time sets the timing budget for read cycles on the memory bus.","metaTitle":"54F189FLQB Standard SRAM, 16x4, 32 ns, CMOS","metaDescription":"54F189FLQB standard SRAM organized 16x4 with 32 ns access time. Active lifecycle, CMOS, Bulk package.","metaKeywords":null},"attributes":{"series":"*","packageCase":null,"mountingType":null,"rohsStatus":"Not applicable","productStatus":"Active","categoryPath":["Memory (DRAM / SRAM / Flash / EEPROM)"],"specifications":{"Series":"*","Package":"Bulk","lifecycle_stage":"eol_hot"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$9.65","priceTiers":[{"qty":32,"price":"$9.65000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/8f6e647bfa616a04cb1c91776e4005e1.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/54F189FLQB/alternatives.json"},"ai":{"faq":[{"question":"What is the 54F189FLQB used for?","answer":"As a 16x4 standard SRAM with 32 ns access time, it is used as a small, fast memory buffer in legacy digital systems — for example, cache tag storage, microcode lookup tables, or FIFO staging in older bus-based designs."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/54F189FLQB","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/54F189FLQB 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}}