{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY28342OC","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"CY28342OC","canonicalUrl":"https://icboms.com/infineon/CY28342OC","factsUrl":"https://icboms.com/api/mcp/products/CY28342OC","rawCanonicalId":null},"summary":{"shortDescription":"Cypress CY28342OC, Clock Synthesizer, PLL Yes, Input Clock, Output Clock, Frequency - Max 24MHz, 48MHz, Voltage - Supply 3.135V ~ 3.465V, Number of Circuits 2, Ratio - Input:Output 1:20, Differential - Input:Output No/Yes, Operating Temperature 0°C ~ 70°C, Package / Case 48-BSSOP, Supplier Device Package 48-SSOP.","salesMarkdown":"## Clock tree for SiS 645/648 — what this part does The Cypress CY28342OC is a PLL-based clock synthesizer for the SiS 645 and SiS 648 chipset platforms. It takes a single-ended clock input and fans it out to 20 clock outputs, two at 24 MHz and the rest at 48 MHz, with differential output capability. The part lives in a 48-pin SSOP package and operates from a 3.135 V to 3.465 V supply. ## Output frequencies and fanout — what the 1:20 ratio means for the board The 1:20 input-to-output ratio means one reference clock feeds 20 device clocks — enough to drive the CPU, memory controller, PCI bus, and peripheral clocks on a SiS 645/648 motherboard without an external fanout buffer. The 24 MHz output typically serves the PCI bus or USB controller; the 48 MHz lines handle the chipset core and memory interface. The differential outputs (No/Yes) give you better noise immunity on the longer traces between the clock generator and the chipset. ## Temperature grade and environment Rated for 0°C to 70°C — commercial grade only. This part is intended for indoor, office-temperature equipment. Not suitable for industrial enclosures, automotive cabins, or outdoor telecom cabinets where ambient temperatures push past 70°C.","metaTitle":"CY28342OC Clock Synthesizer, PLL, 24/48 MHz, 48-SSOP","metaDescription":"CY28342OC clock synthesizer with PLL, 24 MHz and 48 MHz outputs, 1:20 fanout, 48-SSOP. Active, RoHS non-compliant.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"RoHS non-compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"PLL":"Yes","Type":"Clock Synthesizer","Input":"Clock","Output":"Clock","Package":"Bulk","Mounting Type":"Surface Mount","Package / Case":"48-BSSOP (0.295\\\", 7.50mm Width)","Frequency - Max":"24MHz, 48MHz","lifecycle_stage":"eol_hot","Voltage - Supply":"3.135V ~ 3.465V","Divider/Multiplier":"Yes/No","Number of Circuits":"2","Ratio - Input:Output":"1:20","Operating Temperature":"0°C ~ 70°C","Supplier Device Package":"48-SSOP","Differential - Input:Output":"No/Yes"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$5.86","stockQuantity":0,"priceTiers":[{"qty":52,"price":"$5.86000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/67eb7315e6630b2fea41f0989228c3e1.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the operating temperature of CY28342OC?","answer":"The operating temperature range is 0°C to 70°C — commercial grade, suitable for indoor equipment only."},{"question":"Is CY28342OC lead-free?","answer":"No — it is listed as RoHS non-compliant."},{"question":"Does CY28342OC work with SiS 648 chipset?","answer":"Yes — the part is described as 'FTG FOR SIS 645/648 CHIPSET', meaning it is designed specifically for those chipset platforms."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/CY28342OC","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/CY28342OC 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}}