{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY25818SCT","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"CY25818SCT","canonicalUrl":"https://icboms.com/infineon/CY25818SCT","factsUrl":"https://icboms.com/api/mcp/products/CY25818SCT","rawCanonicalId":null},"summary":{"shortDescription":"Infineon Technologies CY25818SCT Spread Spectrum Clock Generator, PLL Yes, 16 MHz max, 8-SOIC (0.154\", 3.90mm Width), Surface Mount, Bulk.","salesMarkdown":"## Spread spectrum clock generator with PLL — what the 16 MHz ceiling means for your EMI budget The CY25818SCT is a spread spectrum clock generator from Infineon Technologies, built around an internal PLL that accepts a clock or crystal input and outputs a modulated clock signal up to 16 MHz. Spread spectrum modulation spreads the output energy across a wider frequency band, reducing peak EMI radiated from the clock trace — a common fix for failing radiated-emissions tests on a two-layer board where a ferrite bead on the clock line alone was not enough. The 16 MHz maximum output frequency suits microcontrollers, USB controllers, and Ethernet PHYs that run on a 12–16 MHz reference — the PLL inside the downstream device multiplies this to its core clock, so the spread spectrum benefit carries through the entire clock tree. Operating temperature from 0°C to 70°C (TA) limits this part to commercial-grade equipment — indoor networking gear, set-top boxes, or office peripherals. Not rated for industrial enclosures that see -20°C or engine-bay heat. ## Package and footprint — 8-SOIC, surface mount The layout is straightforward: decouple with a 0.1 µF ceramic cap as close to the supply pin as the trace allows. The 1:1 input-to-output ratio means one clock input generates one spread-spectrum output — no fan-out or divider on-chip. If the downstream device needs a divided clock, that happens externally. ## Lifecycle and compliance — active, but RoHS non-compliant RoHS non-compliant per the supplier listing — this part contains lead (Pb) above the 0.1 % threshold. For a BOM that requires RoHS-10 compliance, this part is a blocker unless an exemption (e.g., lead in solder for high-reliability equipment) applies.","metaTitle":"CY25818SCT Spread Spectrum Clock Generator, 16 MHz, 8-SOIC","metaDescription":"CY25818SCT from Infineon Technologies: Active PLL spread spectrum clock generator, 16 MHz max, 8-SOIC, 2.97-3.63V supply. RoHS non-compliant. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"RoHS non-compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"PLL":"Yes","Type":"Spread Spectrum Clock Generator","Input":"Clock, Crystal","Output":"Clock","Package":"Bulk","Mounting Type":"Surface Mount","Package / Case":"8-SOIC (0.154\\\", 3.90mm Width)","Frequency - Max":"16MHz","lifecycle_stage":"eol_hot","Voltage - Supply":"2.97V ~ 3.63V","Divider/Multiplier":"Yes/Yes","Number of Circuits":"1","Ratio - Input:Output":"1:1","Operating Temperature":"0°C ~ 70°C (TA)","Supplier Device Package":"8-SOIC","Differential - Input:Output":"No/No"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.61","stockQuantity":0,"priceTiers":[{"qty":187,"price":"$1.61000","currency":"USD"}]},"links":{"datasheetUrl":null,"sourceUrl":null},"ai":{"faq":[{"question":"Is the CY25818SCT RoHS compliant?","answer":"No, the CY25818SCT is listed as RoHS non-compliant — it contains lead above the 0.1 % threshold. Verify your BOM's RoHS exemption policy before specifying this part."},{"question":"What is the maximum output frequency of the CY25818SCT?","answer":"The maximum output frequency is 16 MHz, suitable for providing a spread-spectrum reference clock to microcontrollers, USB controllers, and Ethernet PHYs."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/CY25818SCT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/CY25818SCT 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}}