{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"9ZX21501BKLF","brand":"Renesas Electronics","brandSlug":"renesas","productSlug":"9ZX21501BKLF","canonicalUrl":"https://icboms.com/renesas/9ZX21501BKLF","factsUrl":"https://icboms.com/api/mcp/products/9ZX21501BKLF","rawCanonicalId":null},"summary":{"shortDescription":"Renesas Electronics 9ZX21501BKLF differential clock buffer, 1:15 fan-out, HCSL outputs, 400 MHz max, 64-VFQFN, tray.","salesMarkdown":"## What the 400 MHz and 1:15 ratio mean for your clock tree The 9ZX21501BKLF: This is a PLL-based differential clock buffer with HCSL outputs, rated for a maximum frequency of 400 MHz — the ceiling for PCI Express Gen3/4 and Intel QPI reference clocks. The 1:15 input-to-output ratio fans out a single differential clock to fifteen HCSL loads, which covers a full server blade or a dense PCIe switch fabric without needing a second buffer stage. ## Package and rework — 64-VFQFN with exposed pad Surface-mount only — no through-hole variant exists. The exposed pad requires a hot-air rework profile consistent with lead-free solder; the pad also serves as the primary ground return for the PLL core.","metaTitle":"Renesas 9ZX21501BKLF 15-Output HCSL Buffer, 400 MHz, Active","metaDescription":"Renesas 9ZX21501BKLF differential clock buffer, 1:15 fan-out, 400 MHz max, HCSL outputs for PCIe/QPI. Active production, ROHS3 compliant. Request a quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"PLL":"Yes","Input":"Clock","Output":"HCSL","Package":"Tray","Main Purpose":"Intel QPI, PCI Express (PCIe)","Mounting Type":"Surface Mount","Package / Case":"64-VFQFN Exposed Pad","Frequency - Max":"400MHz","lifecycle_stage":"eol_hot","Voltage - Supply":"3.135V ~ 3.465V","Number of Circuits":"1","Ratio - Input:Output":"1:15","Operating Temperature":"0°C ~ 70°C","Supplier Device Package":"64-VFQFPN (9x9)","Differential - Input:Output":"Yes/Yes"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$6.75","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$6.75000","currency":"USD"},{"qty":10,"price":"$6.10200","currency":"USD"},{"qty":25,"price":"$5.81800","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/6aa67763b31f2af575035369980bdebb.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Will 9ZX21501BKLF drop into a board designed for 9ZXL0851EKKLF?","answer":"Both are 64-VFQFN packages and share the same PLL/HCSL/PCIe purpose, but the pinout and supply sequencing differ; a board spin is required."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/renesas/9ZX21501BKLF","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/renesas/9ZX21501BKLF when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:45:10.375Z","lastPublished":"2026-07-22T19:45:10.375Z","indexable":true}}