{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"PCA9545ABS,118","brand":"NXP Semiconductors","brandSlug":"nxp","productSlug":"PCA9545ABS118","canonicalUrl":"https://icboms.com/nxp/PCA9545ABS118","factsUrl":"https://icboms.com/api/mcp/products/PCA9545ABS%2C118","rawCanonicalId":null},"summary":{"shortDescription":"NXP PCA9545ABS,118 4-Channel I²C Switcher, Interface I²C, Dual Supply 2.3V~3.6V / 4.5V~5.5V, 20-HVQFN (5x5), Surface Mount, Active, ROHS3.","salesMarkdown":"## Supply range — why it matters for your BOM Accepts two distinct supply ranges: 2.3 V to 3.6 V and 4.5 V to 5.5 V. The I²C bus voltage follows the supply pin. ## Package and footprint Housed in a 20-HVQFN (5x5 mm) with an exposed pad. The pad must be soldered to a ground plane for thermal and electrical performance. ## Lifecycle and sourcing posture Listed as Active with ROHS3 compliance. No last-time-buy notice, no NRND flag.","metaTitle":"NXP PCA9545ABS,118 I²C Switcher, 4-Channel, 20-HVQFN","metaDescription":"NXP PCA9545ABS,118 4-channel I²C bus switcher. Dual supply 2.3-3.6V / 4.5-5.5V. Active, ROHS3. 20-HVQFN. Available to order.","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":"4-Channel I²C Switcher","Mounting Type":"Surface Mount","Package / Case":"20-VQFN Exposed Pad","lifecycle_stage":"eol_hot","Voltage - Supply":"2.3V ~ 3.6V, 4.5V ~ 5.5V","Supplier Device Package":"20-HVQFN (5x5)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.77","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$2.77000","currency":"USD"},{"qty":10,"price":"$2.49000","currency":"USD"},{"qty":25,"price":"$2.34960","currency":"USD"},{"qty":100,"price":"$2.00180","currency":"USD"},{"qty":250,"price":"$1.87960","currency":"USD"},{"qty":500,"price":"$1.64466","currency":"USD"},{"qty":1000,"price":"$1.36272","currency":"USD"},{"qty":2500,"price":"$1.26874","currency":"USD"},{"qty":6000,"price":"$1.22175","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/7e2f0fa27e6d3b564c5dc6c8dadfa36a.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to PCA9545ABS,118?","answer":"Within the same NXP PCA9545 family, the PCA9545APW (TSSOP-20) and PCA9545AD (SO-20) are functionally identical 4-channel I²C switchers but in different package footprints. The PCA9545ABS,118 uses the 20-HVQFN (5x5) package, so a pin-compatible drop-in would need to share that exact HVQFN footprint — the TSSOP and SOIC variants are not footprint-compatible without a board spin."},{"question":"What is PCA9545ABS,118 used for?","answer":"It is a 4-channel I²C bus switcher. Use it when multiple I²C slaves share the same address and need to be isolated on separate buses — common in multi-sensor arrays, server management controllers, and mixed-voltage I²C systems where the supply voltage sets the bus logic level."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/nxp/PCA9545ABS118","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/nxp/PCA9545ABS118 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}}