{"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. The part is ROHS3 compliant, so it passes the material declarations for EU and most global markets without an exemption hunt.","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","stockQuantity":0,"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},"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":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}