{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"9DB403DFLFT","brand":"Renesas Electronics","brandSlug":"renesas","productSlug":"9DB403DFLFT","canonicalUrl":"https://icboms.com/renesas/9DB403DFLFT","factsUrl":"https://icboms.com/api/mcp/products/9DB403DFLFT","rawCanonicalId":null},"summary":{"shortDescription":"Renesas Electronics 9DB403DFLFT PCI Express (PCIe) clock buffer, PLL Yes, 1:4 fanout, HCSL input, HCSL/LVDS output, 400 MHz max, 28-SSOP, Surface Mount, 3.135V-3.465V supply, 0°C to 70°C.","salesMarkdown":"## What this 1:4 PCIe clock buffer does on the bench The 9DB403DFLFT is a PLL-based clock buffer purpose-built for PCI Express (PCIe) reference clock distribution. It takes one HCSL input and fans it out to four differential outputs, each configurable as HCSL or LVDS — the output type is set per the application, not hard-wired at the factory. Maximum output frequency is 400 MHz, which covers all PCIe base clocks (100 MHz, 125 MHz, 133 MHz) with headroom for the 400 MHz Gen5 reference if the system ever needs it. The 1:4 ratio means one input drives four loads — typical for a root complex feeding multiple add-in cards or downstream switch ports. ## Supply rail and temperature — what to watch If your board's 3.3 V rail droops below 3.135 V under load, the PLL loses lock and the outputs go indeterminate. The 28-SSOP package (0.209-inch body width, 5.30 mm) is a fine-pitch SSOP — standard footprint, no via-in-pad required. The supplier device package is also 28-SSOP, so the land pattern is the same regardless of which Renesas assembly site ships it.","metaTitle":"Renesas 9DB403DFLFT PCIe Buffer, 1:4 HCSL/LVDS, 400 MHz","metaDescription":"Renesas 9DB403DFLFT PCIe clock buffer, 1:4 fanout, HCSL input, HCSL/LVDS output, 400 MHz max, 28-SSOP. Active production, ROHS3. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"PLL":"Yes","Input":"HCSL","Output":"HCSL, LVDS","Package":"Tape & Reel (TR); Cut Tape (CT)","Main Purpose":"PCI Express (PCIe)","Mounting Type":"Surface Mount","Package / Case":"28-SSOP (0.209\\\", 5.30mm Width)","Frequency - Max":"400MHz","lifecycle_stage":"eol_hot","Voltage - Supply":"3.135V ~ 3.465V","Number of Circuits":"1","Ratio - Input:Output":"1:4","Operating Temperature":"0°C ~ 70°C","Supplier Device Package":"28-SSOP","Differential - Input:Output":"Yes/Yes"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$4.52","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$4.52000","currency":"USD"},{"qty":10,"price":"$4.06200","currency":"USD"},{"qty":25,"price":"$3.84040","currency":"USD"},{"qty":100,"price":"$3.32850","currency":"USD"},{"qty":250,"price":"$3.15776","currency":"USD"},{"qty":500,"price":"$2.83346","currency":"USD"},{"qty":1500,"price":"$2.38966","currency":"USD"},{"qty":3000,"price":"$2.27018","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/b3df1291993220c3e56d25c4f6a1f9fe.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Will 9DB403DFLFT drop into a board designed for 9DB803DFLFT without rewiring?","answer":"Not without checking the fanout count. The 9DB803DFLFT has a 1:8 input-to-output ratio, while the 9DB403DFLFT is 1:4. If the board expects eight clock outputs, the 9DB403DFLFT only drives four — the pinout and package are the same 28-SSOP, but the output count mismatch means unused traces or a redesign."},{"question":"What compliance documentation does Renesas provide for 9DB403DFLFT?","answer":"The part is ROHS3 Compliant per Renesas. The ROHS3 marking covers EU RoHS requirements without exemptions."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/renesas/9DB403DFLFT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/renesas/9DB403DFLFT 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}}