{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"PCA9518DWT","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"PCA9518DWT","canonicalUrl":"https://icboms.com/texas-instruments/PCA9518DWT","factsUrl":"https://icboms.com/api/mcp/products/PCA9518DWT","rawCanonicalId":null},"summary":{"shortDescription":"Nuvoton PCA9518DWT I²C interface buffer, 20-SOIC (0.295\", 7.50mm Width), 3V ~ 3.6V supply, surface mount, ROHS3 compliant, active lifecycle.","salesMarkdown":"## What the PCA9518DWT does on the bus The PCA9518DWT is an I²C buffer — it sits between a master and a heavily loaded or long-reach bus segment, regenerating the clock and data lines so the capacitance limit doesn't kill the rise time. The part operates from a 3V to 3.6V supply, which matches the common 3.3V I²C rail used on most modern MCUs and sensors. It comes in a 20-SOIC wide-body package (7.50 mm width), a footprint shared by several other I²C hub and buffer parts, so a layout swap is straightforward if you ever need to dual-source. ## Supply voltage and bus compatibility The supply range of 3V to 3.6V covers the 3.3V I²C standard with margin. If your bus runs at 3.0V or 3.6V, the buffer tracks it. No level-shifting needed on the supply side — just tie VCC to the same rail the master and downstream devices use.","metaTitle":"PCA9518DWT I²C Buffer, 20-SOIC, 3V-3.6V, Active","metaDescription":"PCA9518DWT I²C buffer in 20-SOIC wide-body, 3V to 3.6V supply, ROHS3 compliant. Active production.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Package":"Tape & Reel (TR); Cut Tape (CT)","Interface":"I²C","Applications":"Buffer","Mounting Type":"Surface Mount","Package / Case":"20-SOIC (0.295\\\", 7.50mm Width)","lifecycle_stage":"eol_hot","Voltage - Supply":"3V ~ 3.6V","Supplier Device Package":"20-SOIC"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.59","priceTiers":[{"qty":1,"price":"$2.59000","currency":"USD"},{"qty":10,"price":"$2.32600","currency":"USD"},{"qty":25,"price":"$2.19440","currency":"USD"},{"qty":100,"price":"$1.86950","currency":"USD"},{"qty":250,"price":"$1.75536","currency":"USD"},{"qty":500,"price":"$1.53594","currency":"USD"},{"qty":1250,"price":"$1.27264","currency":"USD"},{"qty":2500,"price":"$1.24200","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/7f9ba0a25253cc624fbe7d1572f6b44d.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/PCA9518DWT/alternatives.json"},"ai":{"faq":[{"question":"What is the PCA9518DWT used for?","answer":"It is an I²C buffer — it regenerates the clock and data lines on a heavily loaded or long I²C bus segment, allowing more devices or longer traces without violating the bus capacitance limit."},{"question":"Is PCA9518DWT compatible with 3.3V I²C?","answer":"Yes — the supply voltage range is 3V to 3.6V, which covers the 3.3V I²C standard directly."},{"question":"Is PCA9518DWT 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/PCA9518DWT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/PCA9518DWT 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}}