{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY2305SXI-1H","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"CY2305SXI-1H","canonicalUrl":"https://icboms.com/infineon/CY2305SXI-1H","factsUrl":"https://icboms.com/api/mcp/products/CY2305SXI-1H","rawCanonicalId":null},"summary":{"shortDescription":"Cypress CY2305SXI-1H, PLL-based Zero Delay Buffer, 1:5 fanout, 133.33MHz max, 3V-3.6V supply, -40°C to 85°C, 8-SOIC.","salesMarkdown":"## PLL clock distribution in a compact 8-SOIC The Cypress CY2305SXI-1H is a PLL-based zero-delay buffer that takes one clock input and distributes it to five outputs, each running at the same frequency as the input — no division or multiplication. The internal PLL aligns the output edges to the input, so the propagation delay from input to any output is effectively zero, making it a clean choice for synchronizing multiple clock loads in a system. Maximum output frequency is 133.33 MHz, which covers common 100 MHz and 125 MHz reference clocks used in Ethernet, PCIe, and FPGA designs. The supply range is 3 V to 3.6 V, so it runs comfortably from a 3.3 V rail with typical ±5% tolerance. Operating temperature spans -40°C to 85°C, rating it for industrial environments, outdoor telecom cabinets, and automotive cabin-zone applications where the ambient isn't under-hood. ## What the 1:5 fanout and 133.33 MHz ceiling mean for your design The 1:5 input-to-output ratio means one reference clock — from an oscillator, crystal, or FPGA output — can feed five downstream devices: multiple Ethernet PHYs, FPGAs, ASICs, or memory controllers. The zero-delay feature keeps the clock edges aligned across all five outputs, which simplifies timing closure in multi-load synchronous designs. The 133.33 MHz maximum is the speed ceiling. The non-differential, single-ended I/O (CMOS) means it's straightforward to route on a PCB but won't reject common-mode noise the way an LVDS or LVPECL buffer would. ## Package and mounting — a standard SOIC footprint The CY2305SXI-1H comes in an 8-pin SOIC package (0.154\" body width, 3.90 mm wide), surface-mount only. The footprint is industry-standard and matches countless other 8-SOIC devices, so no special layout considerations are needed. The supplier device package is also 8-SOIC, confirming the same mechanical outline. This is a straightforward part for automated pick-and-place and reflow assembly.","metaTitle":"Cypress CY2305SXI-1H PLL Clock Buffer, 133.33MHz, 8-SOIC","metaDescription":"Cypress CY2305SXI-1H PLL zero-delay buffer, 1:5 fanout, 133.33MHz max, 3V-3.6V, -40°C to 85°C, 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":"Fanout Buffer (Distribution), Zero Delay Buffer","Input":"Clock","Output":"Clock","Package":"Tube","Mounting Type":"Surface Mount","Package / Case":"8-SOIC (0.154\\\", 3.90mm Width)","Frequency - Max":"133.33MHz","lifecycle_stage":"eol_hot","Voltage - Supply":"3V ~ 3.6V","Divider/Multiplier":"No/No","Number of Circuits":"1","Ratio - Input:Output":"1:5","Operating Temperature":"-40°C ~ 85°C","Supplier Device Package":"8-SOIC","Differential - Input:Output":"No/No"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$4.8","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$4.80000","currency":"USD"},{"qty":10,"price":"$4.31500","currency":"USD"},{"qty":25,"price":"$4.07960","currency":"USD"},{"qty":100,"price":"$3.53570","currency":"USD"},{"qty":250,"price":"$3.35440","currency":"USD"},{"qty":500,"price":"$3.00988","currency":"USD"},{"qty":1000,"price":"$2.75919","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/1c1d5e6035d2b988cad8f31146f1d081.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is CY2305SXI-1H compatible with 3.3V logic?","answer":"Yes, the supply voltage range is 3 V to 3.6 V, so it operates directly from a 3.3 V rail with typical tolerance."},{"question":"What is the difference between CY2305SXI-1H and CY2305SXI-1HT?","answer":"The CY2305SXI-1H ships in a Tube; the CY2305SXI-1HT is the same device packaged in Tape & Reel (TR) and also available in Cut Tape and Digi-Reel. Electrical specifications are identical."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/CY2305SXI-1H","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/CY2305SXI-1H 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}}