{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"9DB803DFILF","brand":"Renesas Electronics","brandSlug":"renesas","productSlug":"9DB803DFILF","canonicalUrl":"https://icboms.com/renesas/9DB803DFILF","factsUrl":"https://icboms.com/api/mcp/products/9DB803DFILF","rawCanonicalId":null},"summary":{"shortDescription":"Renesas Electronics PCI Express (PCIe) clock buffer, PLL Yes, 1:8 fanout, 400 MHz max, HCSL input/output, 48-BSSOP (0.295\", 7.50mm Width), Surface Mount, Tube.","salesMarkdown":"## PCIe clock distribution in a 48-SSOP footprint The 9DB803DFILF is a 1:8 differential fanout buffer with an integrated PLL, designed to distribute a clean 400 MHz reference clock across a PCI Express (PCIe) clock tree. The 48-SSOP package (7.50 mm body width) demands a standard surface-mount footprint — no fine-pitch rework required, though the 0.295-inch lead span means the board layout should match the SSOP land pattern, not a narrower SOIC. Input and output are both HCSL (High-Speed Current Steering Logic), the de facto signaling standard for PCIe reference clocks. The differential I/O path (Yes/Yes) means the buffer preserves signal integrity across the fanout — each of the eight outputs drives a separate HCSL-compliant load without the skew accumulation you'd see from a daisy-chain. ## Supply headroom and temperature grade If your board's 3.3 V rail droops below 3.135 V under load, the PLL may lose lock; budget the IR drop across the PCB trace and the regulator's load regulation into that floor. The industrial temperature grade (-40°C to 85°C) covers most outdoor and factory-floor deployments — an engine bay or direct-sunlight enclosure at 85°C ambient still leaves margin before the junction limit. At 400 MHz max frequency, this buffer supports PCIe Gen 1 through Gen 3 reference clock rates (100 MHz, 125 MHz, and the spread-spectrum variants). The 1:8 fanout ratio means a single input drives up to eight loads — useful for distributing the reference to multiple root complexes, switches, or endpoint PHYs without an external clock divider.","metaTitle":"Renesas 9DB803DFILF PCIe Clock Buffer, 400MHz, 1:8, 48-SSOP","metaDescription":"Renesas 9DB803DFILF PCIe clock buffer, 1:8 fanout, 400 MHz, HCSL I/O, industrial temp -40°C to 85°C, 48-SSOP. Active production, ROHS3 compliant.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"PLL":"Yes","Input":"HCSL","Output":"HCSL","Package":"Tube","Main Purpose":"PCI Express (PCIe)","Mounting Type":"Surface Mount","Package / Case":"48-BSSOP (0.295\\\", 7.50mm Width)","Frequency - Max":"400MHz","lifecycle_stage":"eol_hot","Voltage - Supply":"3.135V ~ 3.465V","Number of Circuits":"1","Ratio - Input:Output":"1:8","Operating Temperature":"-40°C ~ 85°C","Supplier Device Package":"48-SSOP","Differential - Input:Output":"Yes/Yes"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$5.75","stockQuantity":23,"priceTiers":[{"qty":1,"price":"$5.75000","currency":"USD"},{"qty":10,"price":"$5.16800","currency":"USD"},{"qty":25,"price":"$4.88600","currency":"USD"},{"qty":100,"price":"$4.23440","currency":"USD"},{"qty":250,"price":"$4.01728","currency":"USD"},{"qty":500,"price":"$3.60468","currency":"USD"},{"qty":1000,"price":"$3.04010","currency":"USD"},{"qty":2500,"price":"$2.88810","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/16ce1670711707ee64c30f1c3bef4fc0.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest functional second-source for the 9DB803DFILF?","answer":"The 9DB803DFILF is the industrial-temperature (-40°C to 85°C) tube-packaged variant. For a drop-in replacement without rewiring, verify your board's temperature requirements — the 9DB803DFLFT will not meet the full industrial range."},{"question":"What is the 9DB803DFILF's PLL and input/output type?","answer":"The 9DB803DFILF integrates a PLL (Yes) and uses HCSL signaling for both input and output. The differential I/O path (Yes/Yes) supports PCIe reference clock distribution at up to 400 MHz with a 1:8 fanout ratio."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/renesas/9DB803DFILF","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/renesas/9DB803DFILF 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}}