{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY2304NZZXI-1T","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"CY2304NZZXI-1T","canonicalUrl":"https://icboms.com/infineon/CY2304NZZXI-1T","factsUrl":"https://icboms.com/api/mcp/products/CY2304NZZXI-1T","rawCanonicalId":null},"summary":{"shortDescription":"Cypress CY2304NZZXI-1T zero-delay clock buffer, 1:4 fanout, 140 MHz max, LVCMOS/LVTTL input, LVCMOS output, 3 V to 3.6 V supply, -40°C to 85°C, 8-TSSOP, ROHS3 compliant.","salesMarkdown":"## What this clock buffer does on a PCIe board The Cypress CY2304NZZXI-1T is a zero-delay clock buffer designed for PCI Express reference clock distribution. It takes one LVCMOS or LVTTL input and delivers four identical LVCMOS outputs at up to 140 MHz, with a 1:4 fanout ratio. There is no PLL inside — this is a buffer, not a synthesizer, so the output frequency equals the input frequency with added deterministic delay. The 140 MHz maximum output frequency covers the 100 MHz reference clock used by PCIe Gen1, Gen2, and Gen3. Gen4 and Gen5 run at higher data rates but still use a 100 MHz reference, so this buffer is fine for those too — the limiting factor is the edge rate and jitter on the output, not the frequency. Because it is a zero-delay buffer (not a PLL), the output tracks the input phase with minimal skew, which simplifies timing closure in a multi-load clock tree. ## Package and footprint reality The part comes in an 8-TSSOP package with a 4.40 mm body width — a common, easy-to-route footprint. It is surface-mount only.","metaTitle":"Cypress CY2304NZZXI-1T Clock Buffer, 140 MHz, 1:4, 8-TSSOP","metaDescription":"Cypress CY2304NZZXI-1T zero-delay buffer for PCIe clock distribution. 140 MHz max, 1:4 fanout, LVCMOS I/O, -40°C to 85°C, ROHS3. Active lifecycle.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Logic ICs"],"specifications":{"PLL":"No","Input":"LVCMOS, LVTTL","Output":"LVCMOS","Package":"Tape & Reel (TR); Cut Tape (CT)","Main Purpose":"PCI Express (PCIe)","Mounting Type":"Surface Mount","Package / Case":"8-TSSOP (0.173\\\", 4.40mm Width)","Frequency - Max":"140MHz","lifecycle_stage":"eol_hot","Voltage - Supply":"3V ~ 3.6V","Number of Circuits":"1","Ratio - Input:Output":"1:4","Operating Temperature":"-40°C ~ 85°C","Supplier Device Package":"8-TSSOP","Differential - Input:Output":"No/No"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$13.7","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$13.70000","currency":"USD"},{"qty":10,"price":"$12.58700","currency":"USD"},{"qty":25,"price":"$12.06480","currency":"USD"},{"qty":100,"price":"$10.63020","currency":"USD"},{"qty":250,"price":"$10.10844","currency":"USD"},{"qty":500,"price":"$9.45628","currency":"USD"},{"qty":1000,"price":"$8.67369","currency":"USD"},{"qty":2500,"price":"$8.34761","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/45bc27bb21ed7bd06ec8fd90905b9a4a.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is CY2304NZZXI-1T RoHS compliant?","answer":"Yes, the CY2304NZZXI-1T is ROHS3 compliant, meeting the latest EU restriction levels."},{"question":"What is the difference between CY2304NZZXI-1T and CY2304NZZXI-1?","answer":"The -1T suffix indicates Tape & Reel packaging; the -1 suffix (without T) typically ships in tube. The silicon and electrical specifications are identical."},{"question":"Can CY2304NZZXI-1T be used for PCIe Gen2?","answer":"Yes. PCIe Gen2 uses a 100 MHz reference clock, which is well within the 140 MHz maximum frequency of this buffer. The zero-delay architecture provides the low-skew distribution needed for Gen2 timing."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/CY2304NZZXI-1T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/CY2304NZZXI-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}}