{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"W181-53SZ","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"W181-53SZ","canonicalUrl":"https://icboms.com/infineon/W181-53SZ","factsUrl":"https://icboms.com/api/mcp/products/W181-53SZ","rawCanonicalId":null},"summary":{"shortDescription":"Cypress W181-53SZ clock/frequency synthesizer, spread spectrum clock generator, PLL Yes, input Clock/Crystal, output CMOS, max frequency 75 MHz, 1 circuit, 1:1 ratio, 3.135V-3.465V / 4.5V-5.5V supply, 0°C to 70°C, 8-SOIC package, surface mount.","salesMarkdown":"## Clock generator with spread-spectrum — what it does on the board The Cypress W181-53SZ is a single-circuit clock/frequency synthesizer with an integrated PLL and spread-spectrum clock generation. It accepts a clock or crystal input and delivers a CMOS output up to 75 MHz. The spread-spectrum modulation reduces peak electromagnetic emissions at the fundamental and harmonics — useful for passing radiated-emission limits without adding ferrite beads or shielding cans. That fits indoor equipment, office peripherals, consumer electronics, and test gear. Not rated for industrial enclosures, engine bays, or outdoor telecom cabinets. ## Spread-spectrum — why it matters for EMI compliance Spread-spectrum clock generation modulates the output frequency around the center frequency, spreading the radiated energy across a wider band. Peak amplitude at any single harmonic drops, which can push a design below the FCC or CISPR Class B limit without extra filtering. The W181-53SZ is a dedicated spread-spectrum generator, not a plain PLL — the modulation profile is built into the silicon. ## Package and footprint — 8-SOIC, surface mount Mounting is surface-mount only; no through-hole variant. The bulk shipping option means parts arrive in tubes or trays, not tape-and-reel — factor that into your pick-and-place setup if you need reeled units.","metaTitle":"W181-53SZ Clock Generator, 75 MHz, Spread Spectrum, PLL","metaDescription":"W181-53SZ clock/frequency synthesizer with spread spectrum, PLL, 75 MHz max, CMOS output, 3.3V/5V supply, 8-SOIC. Active, RoHS3.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Clock & Timing ICs"],"specifications":{"PLL":"Yes","Type":"Clock/Frequency Synthesizer, Spread Spectrum Clock Generator","Input":"Clock, Crystal","Output":"CMOS","Package":"Bulk","Mounting Type":"Surface Mount","Package / Case":"8-SOIC (0.154\\\", 3.90mm Width)","Frequency - Max":"75MHz","lifecycle_stage":"eol_hot","Voltage - Supply":"3.135V ~ 3.465V, 4.5V ~ 5.5V","Divider/Multiplier":"Yes/No","Number of Circuits":"1","Ratio - Input:Output":"1:1","Operating Temperature":"0°C ~ 70°C","Supplier Device Package":"8-SOIC","Differential - Input:Output":"No/No"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.04","priceTiers":[{"qty":289,"price":"$1.04000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/743c0d10e4d2d2749a9544a0835d0525.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/W181-53SZ/alternatives.json"},"ai":{"faq":[{"question":"Does W181-53SZ have spread spectrum capability?","answer":"Yes, the device type is explicitly a Spread Spectrum Clock Generator with an integrated PLL. The spread-spectrum modulation is built in to reduce EMI at the output frequency."},{"question":"Is W181-53SZ a direct replacement for a 50 MHz clock generator?","answer":"Yes, the maximum output frequency is 75 MHz, so a 50 MHz clock is well within the operating range. The PLL synthesizes the target frequency from the reference input, and the 1:1 ratio means no internal divider alters the output. Verify the input type (clock or crystal) matches your reference source."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/W181-53SZ","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/W181-53SZ 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}}