{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY2304NZZXC-1T","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"CY2304NZZXC-1T","canonicalUrl":"https://icboms.com/infineon/CY2304NZZXC-1T","factsUrl":"https://icboms.com/api/mcp/products/CY2304NZZXC-1T","rawCanonicalId":null},"summary":{"shortDescription":"Infineon (Cypress) CY2304NZZXC-1T, Zero-Delay Clock Buffer, 1 Circuit, 1:4 I/O, LVCMOS/LVTTL Input, LVCMOS Output, 140 MHz Max, 3V-3.6V Supply, 0°C-70°C, 8-TSSOP.","salesMarkdown":"## What this part is — and the selection trap it avoids The Infineon (Cypress) CY2304NZZXC-1T is a zero-delay clock buffer designed specifically for PCI Express (PCIe) reference clock distribution. It takes one LVCMOS or LVTTL input and fans it out to four LVCMOS outputs, with a maximum operating frequency of 140 MHz. The part has no internal PLL — it is a buffer, not a synthesizer — so the output clock tracks the input frequency and phase exactly, within the device's propagation delay. This matters because a common selection mistake is grabbing a general-purpose PLL-based fanout buffer for a PCIe clock tree, which adds jitter and can violate the PCIe reference clock specification. The CY2304NZZXC-1T avoids that: it is a clean, low-additive-jitter buffer purpose-built for the PCIe reference clock lane. ## Supply and temperature — the commercial-grade reality Operating from a 3 V to 3.6 V supply, this part is a 3.3 V nominal device — the standard PCIe reference clock rail. The operating temperature range is 0°C to 70°C, which is commercial grade. That means it is intended for office-environment equipment, not industrial or automotive applications. If your PCIe clock distribution needs to survive -40°C or +85°C, this is not the part; look at the industrial-temperature variant in the same family. ## Package and footprint — what the 8-TSSOP means for the board Housed in an 8-TSSOP package (4.40 mm width, 0.173\" body width), this is a surface-mount part. The 8-pin TSSOP is a common footprint, and the supplier device package is also listed as 8-TSSOP, so there is no ambiguity about the land pattern. The part is available in Tape & Reel or Cut Tape, which covers both production reels and prototype quantities. No exposed thermal pad here — the 8-TSSOP dissipates through the leads and the board copper, so for high-frequency PCIe clock distribution at 140 MHz, the power dissipation is low enough that thermal management is not a concern. ## Lifecycle and compliance — active, no obsolescence worry There is no NRND or EOL flag on this part. It is also ROHS3 compliant, so it meets the latest EU RoHS exemption-free requirements. For a BOM line that needs a stable, long-life PCIe clock buffer, this part is not a sourcing risk.","metaTitle":"CY2304NZZXC-1T Clock Buffer, 140 MHz, 1:4 Fanout, 8-TSSOP","metaDescription":"Infineon (Cypress) CY2304NZZXC-1T zero-delay clock buffer for PCIe. 140 MHz max, 1:4 fanout, LVCMOS I/O, 3V-3.6V, 8-TSSOP. Active production, ROHS3 compliant.","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":"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":"0°C ~ 70°C","Supplier Device Package":"8-TSSOP","Differential - Input:Output":"No/No"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$11.39","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$11.39000","currency":"USD"},{"qty":10,"price":"$10.47200","currency":"USD"},{"qty":25,"price":"$10.03840","currency":"USD"},{"qty":100,"price":"$8.84460","currency":"USD"},{"qty":250,"price":"$8.41048","currency":"USD"},{"qty":500,"price":"$7.86788","currency":"USD"},{"qty":1000,"price":"$7.21674","currency":"USD"},{"qty":2500,"price":"$6.94544","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/45bc27bb21ed7bd06ec8fd90905b9a4a.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the maximum frequency of CY2304NZZXC-1T?","answer":"The maximum operating frequency is 140 MHz. This is the upper limit for the PCIe reference clock it is designed to buffer and distribute."},{"question":"Is CY2304NZZXC-1T RoHS compliant?","answer":"Yes, it is ROHS3 compliant, meeting the latest EU RoHS directive without exemptions."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/CY2304NZZXC-1T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/CY2304NZZXC-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}}