{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY25901SC-1T","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"CY25901SC-1T","canonicalUrl":"https://icboms.com/infineon/CY25901SC-1T","factsUrl":"https://icboms.com/api/mcp/products/CY25901SC-1T","rawCanonicalId":null},"summary":{"shortDescription":"Cypress CY25901SC-1T, Spread Spectrum Clock Generator, PLL Yes, Input Crystal, Output Clock, 40MHz max, 2.97V~3.63V, 8-SOIC, -10°C~85°C.","salesMarkdown":"## Spread-spectrum clocking — why it matters Spread-spectrum modulation spreads the clock energy over a small frequency band, reducing peak EMI radiated from the clock trace and its harmonics. This is the primary reason to pick this part over a plain PLL clock buffer: it helps pass FCC/CE radiated-emission limits without adding ferrite beads or shielding cans. The trade-off is a slight increase in peak-to-peak jitter, which matters if the clock feeds a timing-critical ADC or SerDes — check the downstream jitter budget before committing the BOM. ## Lifecycle and compliance The CY25901SC-1T is listed as Active in production — no end-of-life notice, no last-time-buy pressure. It is RoHS non-compliant, which is a hard stop for any product sold into EU or other RoHS-regulated markets unless an exemption applies. For RoHS-required builds, look at the CY2305SXI-1HT as a functional alternative (same PLL clock-generator class, wider temperature range, RoHS-compliant), but verify pin-compatibility and output count — the CY2305 has a 1:5 input-to-output ratio versus the 2:2 ratio here.","metaTitle":"CY25901SC-1T Spread Spectrum Clock Generator, 40MHz, 8-SOIC","metaDescription":"CY25901SC-1T spread spectrum clock generator from Cypress. PLL-based, crystal input, 40MHz max, 2.97-3.63V supply, 8-SOIC. Active, RoHS non-compliant.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"RoHS non-compliant","productStatus":"Active","categoryPath":["Clock & Timing ICs"],"specifications":{"PLL":"Yes","Type":"Spread Spectrum Clock Generator","Input":"Crystal","Output":"Clock","Package":"Bulk","Mounting Type":"Surface Mount","Package / Case":"8-SOIC (0.154\\\", 3.90mm Width)","Frequency - Max":"40MHz","lifecycle_stage":"eol_hot","Voltage - Supply":"2.97V ~ 3.63V","Divider/Multiplier":"No/No","Number of Circuits":"1","Ratio - Input:Output":"2:2","Operating Temperature":"-10°C ~ 85°C (TA)","Supplier Device Package":"8-SOIC","Differential - Input:Output":"No/No"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.73","stockQuantity":0,"priceTiers":[{"qty":413,"price":"$0.73000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/e94c19727ae2f92fdaa98d193ac85032.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the frequency range of CY25901SC-1T?","answer":"The maximum output frequency is 40 MHz. The output frequency equals the crystal frequency since the part has no internal divider or multiplier."},{"question":"Does CY25901SC-1T require an external crystal?","answer":"Yes, the input type is Crystal, so an external crystal (and its load capacitors) must be provided on the board."},{"question":"Is CY25901SC-1T RoHS compliant?","answer":"No, CY25901SC-1T is RoHS non-compliant. For RoHS-required applications, consider the CY2305SXI-1HT as a functional alternative."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/CY25901SC-1T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/CY25901SC-1T 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}}