{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"54LS259LMQB","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"54LS259LMQB","canonicalUrl":"https://icboms.com/texas-instruments/54LS259LMQB","factsUrl":"https://icboms.com/api/mcp/products/54LS259LMQB","rawCanonicalId":null},"summary":{"shortDescription":"54LS259LMQB, D Latch, LS Series TTL, Package Bulk, Lifecycle Current.","salesMarkdown":"That means no last-time-buy notice has been issued and the part remains in regular production. That suits hand-insertion during prototype builds, rework, or low-volume production where a pick-and-place machine is not involved. If your line requires reeled parts for automated assembly, this bulk format will need manual loading into feeders or a separate taping service.","metaTitle":"54LS259LMQB D Latch, LS Series TTL, Active – Buy Online","metaDescription":"54LS259LMQB is an active D-type latch from the 54LS TTL series in bulk packaging.","metaKeywords":null},"attributes":{"series":"*","packageCase":null,"mountingType":null,"rohsStatus":"Not applicable","productStatus":"Active","categoryPath":["Logic ICs"],"specifications":{"Series":"*","Package":"Bulk","lifecycle_stage":"eol_hot"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.57","priceTiers":[{"qty":85,"price":"$3.57000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/de81bc25078cf86055930be5cd13f0c4.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/54LS259LMQB/alternatives.json"},"ai":{"faq":[{"question":"Is 54LS259LMQB equivalent to 74LS259?","answer":"The 54LS259LMQB is the military-temperature-range version of the 74LS259. The 74LS259 is specified for 0°C to 70°C commercial operation, while the 54LS part covers the full -55°C to +125°C military range. Function and pinout are the same, but the temperature grade and screening differ."},{"question":"What is the function of the 54LS259LMQB?","answer":"It is a D-type latch from the 54LS low-power Schottky TTL series. The output follows the input while the latch enable is high and holds the last state when enable goes low."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/54LS259LMQB","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/54LS259LMQB 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}}