{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"9DB403DGLFT","brand":"Renesas Electronics","brandSlug":"renesas","productSlug":"9DB403DGLFT","canonicalUrl":"https://icboms.com/renesas/9DB403DGLFT","factsUrl":"https://icboms.com/api/mcp/products/9DB403DGLFT","rawCanonicalId":null},"summary":{"shortDescription":"Renesas 9DB403DGLFT PCI Express (PCIe) clock buffer, PLL Yes, 1:4 fanout, HCSL input, HCSL/LVDS output, 400 MHz max, 3.135V–3.465V supply, 0°C–70°C, 28-TSSOP.","salesMarkdown":"## What this PCIe clock buffer does on the board The Renesas 9DB403DGLFT is a 1:4 differential clock buffer with an integrated PLL, designed to clean and fan out a PCI Express reference clock. It takes a single HCSL input and delivers four HCSL or LVDS outputs at up to 400 MHz, covering PCIe Gen1 through Gen3 base frequencies. The 3.135 V to 3.465 V supply rail and 0°C to 70°C operating range target it squarely at commercial server, storage, and networking line cards — not industrial or outdoor gear. ## 400 MHz ceiling and 1:4 fanout — the fit decision At 400 MHz max, this buffer handles PCIe Gen3 (8 GT/s) reference-clock duty without margin for Gen4 or Gen5 rates. The 1:4 ratio drives four loads from one input; if your BOM calls for eight downstream devices, the 9DB803DFLFT (1:8, same 400 MHz cap) is the direct drop-in step-up. ## Active lifecycle — no last-time-buy watch needed The 9DB403DGLFT carries an Active product status. That means Renesas continues to manufacture it with no announced end-of-life or last-time-buy window. For a BOM line that needs a stable PCIe clock distribution source, this part does not add obsolescence risk. The ROHS3 compliance is current, and the 28-TSSOP package is a standard footprint that multiple distributors stock. ## Sourcing and BOM fit Because this is an active, commercial-temperature PCIe buffer, it is sourced through standard independent distribution channels. The 28-TSSOP body (4.40 mm width) is a common surface-mount package that reflows on a standard lead-free profile. No special handling or moisture-sensitivity beyond the standard MSL level for TSSOP is expected, but verify the bake requirements if the part has been in storage.","metaTitle":"Renesas 9DB403DGLFT PCIe Clock Buffer, 400 MHz, 1:4","metaDescription":"Renesas 9DB403DGLFT PCIe clock buffer with PLL, 400 MHz max, 1:4 HCSL/LVDS output, 28-TSSOP. Active lifecycle.","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":"HCSL, LVDS","Package":"Tape & Reel (TR); Cut Tape (CT)","Main Purpose":"PCI Express (PCIe)","Mounting Type":"Surface Mount","Package / Case":"28-TSSOP (0.173\\\", 4.40mm 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-TSSOP","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":1000,"price":"$2.38966","currency":"USD"},{"qty":2000,"price":"$2.27018","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/b3df1291993220c3e56d25c4f6a1f9fe.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Does 9DB403DGLFT support PCIe Gen4 or Gen5?","answer":"No. The 400 MHz maximum frequency covers PCIe Gen1 through Gen3 reference-clock rates. Gen4 (16 GT/s) and Gen5 (32 GT/s) require a buffer with a higher frequency ceiling, such as the 9ZXL0851EKKLF which also operates at 400 MHz but is rated for industrial temperature and Intel QPI alongside PCIe."},{"question":"What are the cross reference or equivalent parts for 9DB403DGLFT?","answer":"For a 1:8 fanout at the same 400 MHz ceiling, the 9DB803DFLFT is the closest functional step-up. For lower-speed applications (150 MHz max), the 9DBL411BGLFT is a 1:4 LP-HCSL buffer without PLL. Both are Renesas parts in similar 28-pin TSSOP packages."},{"question":"Is 9DB403DGLFT compatible with PCIe Gen3?","answer":"Yes. The 400 MHz maximum frequency covers the 100 MHz reference clock used by PCIe Gen3 (8 GT/s). The differential HCSL input and output are standard for that generation."},{"question":"What is 9DB403DGLFT used for?","answer":"It is a 1:4 differential clock buffer with PLL for PCI Express clock distribution on server, storage, and networking line cards. It cleans and fans out a single HCSL reference clock to four HCSL or LVDS loads."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/renesas/9DB403DGLFT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/renesas/9DB403DGLFT 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}}