{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY2304NZZXI-1","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"CY2304NZZXI-1","canonicalUrl":"https://icboms.com/infineon/CY2304NZZXI-1","factsUrl":"https://icboms.com/api/mcp/products/CY2304NZZXI-1","rawCanonicalId":null},"summary":{"shortDescription":"Cypress CY2304NZZXI-1, Zero Delay Buffer, 1 Circuit, 1:4 LVCMOS/LVTTL Input to LVCMOS Output, 140 MHz Max, 3V-3.6V Supply, -40°C to 85°C, 8-TSSOP.","salesMarkdown":"## What this clock buffer is and where it fits The Cypress CY2304NZZXI-1 is a single-ended, non-PLL zero-delay buffer that distributes a single LVCMOS or LVTTL clock input to four LVCMOS outputs with matched propagation delays. It targets PCI Express (PCIe) reference clock distribution, buffering the single-ended reference. The 140 MHz maximum frequency covers PCIe reference clock rates. Packaged in an 8-TSSOP, it operates from 3V to 3.6V supply over -40°C to 85°C. ## 140 MHz and 1:4 fanout — what they mean for the clock tree The 140 MHz maximum frequency is the ceiling for the output clock rate. The 1:4 input-to-output ratio means one input drives four outputs with matched delays. Because there is no PLL, the output frequency equals the input; there is no multiplication or jitter attenuation. ## Non-differential I/O and PCIe — what works and what does not The CY2304NZZXI-1 accepts LVCMOS or LVTTL inputs and outputs LVCMOS levels. It does not accept or generate differential signals. For PCIe clock distribution, the standard reference clock is a differential HCSL pair (100 MHz). This buffer cannot directly drive or receive that differential signal. However, many PCIe clock generators output a single-ended LVCMOS copy alongside the differential pair, and this part can fan out that single-ended copy to multiple endpoints that accept single-ended clocks. If your design requires differential HCSL fanout, look for a dedicated PCIe clock buffer with differential I/O. For single-ended LVCMOS clock trees, this part is a straightforward fit. ## Supply and temperature — industrial-grade margin The 3V to 3.6V supply range aligns with standard 3.3V logic rails. The -40°C to 85°C operating temperature covers industrial and extended-commercial conditions. No derating is needed within this range for the 140 MHz operation. ## Package and footprint The 8-TSSOP package is a common, low-profile surface-mount footprint. The 0.173-inch body width and 4.40 mm body length fit standard TSSOP-8 land patterns. No exposed pad — all eight pins are signal or power. ## Lifecycle and compliance The CY2304NZZXI-1 is listed as Active and ROHS3 Compliant. For new designs, this part is a safe selection today. ROHS3 compliance means it meets the latest EU restriction on hazardous substances, including all four phthalates.","metaTitle":"CY2304NZZXI-1 Clock Buffer, 140 MHz, 1:4 Fanout, 8-TSSOP","metaDescription":"CY2304NZZXI-1 zero-delay buffer, 140 MHz max, 1:4 LVCMOS fanout, 3V-3.6V, -40°C to 85°C, 8-TSSOP. Active, ROHS3.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Clock & Timing ICs"],"specifications":{"PLL":"No","Input":"LVCMOS, LVTTL","Output":"LVCMOS","Package":"Tube","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"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/45bc27bb21ed7bd06ec8fd90905b9a4a.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Can CY2304NZZXI-1 be used for PCIe clock generation?","answer":"Yes, but only for the single-ended LVCMOS reference clock fanout, not for differential HCSL generation. The part has no PLL and no differential I/O, so it cannot generate or buffer the differential 100 MHz pair that PCIe typically uses. It can fan out a single-ended LVCMOS copy of the PCIe reference clock to multiple loads that accept single-ended inputs."},{"question":"Is CY2304NZZXI-1 RoHS compliant?","answer":"Yes, it is ROHS3 Compliant, meeting the latest EU RoHS directive including the four phthalates (DEHP, BBP, DBP, DIBP)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/CY2304NZZXI-1","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/CY2304NZZXI-1 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}}