{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"9DBU0841AKLF","brand":"Renesas Electronics","brandSlug":"renesas","productSlug":"9DBU0841AKLF","canonicalUrl":"https://icboms.com/renesas/9DBU0841AKLF","factsUrl":"https://icboms.com/api/mcp/products/9DBU0841AKLF","rawCanonicalId":null},"summary":{"shortDescription":"Renesas 9DBU0841AKLF PCI Express (PCIe) clock buffer, PLL Yes, 1:8 fanout, HCSL input to LP-HCSL output, 167 MHz max, 1.5 V supply, 48-VFQFN Exposed Pad, 0°C to 70°C.","salesMarkdown":"## PCIe clock distribution — what this buffer does on the board The Renesas 9DBU0841AKLF is a 1:8 PCI Express clock buffer with an integrated PLL, fanning out a single HCSL reference clock to eight LP-HCSL outputs. It runs on a 1.425V to 1.575V supply rail. ## 1:8 fanout — enough for a multi-slot backplane One input drives eight output copies. That's enough to clock a half-dozen PCIe slots plus the chipset on a standard ATX server board, or to distribute the refclk across a compact PCIe switch fabric. The differential input and output (Yes/Yes) keep signal integrity intact across the fanout tree — no single-ended conversion losses to budget for. ## Temperature grade — indoor equipment only Rated 0°C to 70°C, so this part belongs in a temperature-controlled server room, telecom central office, or office equipment — not in an outdoor base station or under-hood automotive ECU. If your BOM calls for a wider range, the 9ZXL0851EKKLF covers -40°C to 85°C but runs on a 3.135 V supply and uses standard HCSL outputs, not LP-HCSL. ## Package and footprint — 48-VFQFPN, 6x6 mm The 6x6 mm exposed pad needs a thermal via pattern under the pad for the supply rail's return current. The exposed pad is the ground connection — don't leave it floating. Surface-mount only; no through-hole equivalent exists. ## Sourcing and lifecycle — active, no LTB risk The 9DBU0841AKLF is listed as Active and ROHS3 compliant. For dual-sourcing, the closest functional peer is the 9DB803DFLFT — same 1:8 fanout, same PCIe purpose, but its output is standard HCSL (not LP-HCSL) and it runs on a 3.135 V supply, so the rail and output swing differ. A direct drop-in it is not; verify the downstream receiver's input threshold before swapping.","metaTitle":"9DBU0841AKLF PCIe Clock Buffer, 1:8 Fanout, 167 MHz","metaDescription":"Renesas 9DBU0841AKLF PCIe clock buffer with PLL, 1:8 HCSL input to LP-HCSL output, 167 MHz max, 1.5 V supply, 48-VFQFPN, active.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["DC-DC Power Modules"],"specifications":{"PLL":"Yes","Input":"HCSL","Output":"LP-HCSL","Package":"Tray","Main Purpose":"PCI Express (PCIe)","Mounting Type":"Surface Mount","Package / Case":"48-VFQFN Exposed Pad","Frequency - Max":"167MHz","lifecycle_stage":"eol_hot","Voltage - Supply":"1.425V ~ 1.575V","Number of Circuits":"1","Ratio - Input:Output":"1:8","Operating Temperature":"0°C ~ 70°C","Supplier Device Package":"48-VFQFPN (6x6)","Differential - Input:Output":"Yes/Yes"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$4.84","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$5.08000","currency":"USD"},{"qty":10,"price":"$4.56600","currency":"USD"},{"qty":25,"price":"$4.31680","currency":"USD"},{"qty":80,"price":"$3.74125","currency":"USD"},{"qty":230,"price":"$3.54939","currency":"USD"},{"qty":490,"price":"$3.18488","currency":"USD"},{"qty":980,"price":"$3.02270","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/2a7e58b67470d67c652c3990a1338de9.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Can the 9DBU0841AKLF be used in PCIe Gen3 applications?","answer":"Yes. The 167 MHz maximum frequency covers the 100 MHz reference clock rate used by PCIe Gen1, Gen2, and Gen3. The PLL and LP-HCSL outputs meet the jitter and swing requirements for Gen3 refclk distribution."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/renesas/9DBU0841AKLF","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/renesas/9DBU0841AKLF 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}}