{"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. Temperature range is 0°C to 70°C, commercial grade. 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 Housed in an 8-pin SOIC package (3.90 mm body width), the W181-53SZ fits a standard narrow-SOIC footprint. The supplier device package is 8-SOIC. 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. ## Lifecycle and sourcing — active, no LTB watch The W181-53SZ is listed as Active with ROHS3 compliance. Pricing and lead time are confirmed at quote time against an RFQ — no stock number on this page, but we source and quote to order.","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","stockQuantity":0,"priceTiers":[{"qty":289,"price":"$1.04000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/743c0d10e4d2d2749a9544a0835d0525.pdf","sourceUrl":null},"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":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}