{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"557G-05ALFT","brand":"Renesas Electronics","brandSlug":"renesas","productSlug":"557G-05ALFT","canonicalUrl":"https://icboms.com/renesas/557G-05ALFT","factsUrl":"https://icboms.com/api/mcp/products/557G-05ALFT","rawCanonicalId":null},"summary":{"shortDescription":"Renesas Electronics 557G-05ALFT PCIe clock generator IC, PLL-based, 1:4 fanout, 200 MHz max, HCSL/LVDS outputs, 20-TSSOP, Tape & Reel.","salesMarkdown":"## PCIe clock source in a 20-TSSOP footprint The 557G-05ALFT is a PLL-based clock generator purpose-built for PCI Express (PCIe) reference clocks, delivering up to 200 MHz on four differential outputs from a single crystal or clock input. Packaged in a 20-TSSOP (4.40 mm width), it accepts a 3.135 V to 3.465 V supply and outputs HCSL or LVDS signals — the HCSL format is the standard PCIe reference clock swing, so no external level translation is needed on the differential pairs. ## Fanout ratio and signal integrity for the clock tree A 1:4 input-to-output ratio means a single crystal or clock source fans out to four differential pairs — enough to clock a root complex plus three downstream slots or a switch chip on a typical PCIe lane distribution. ## Active lifecycle and compliance documentation ROHS3 compliant per, so it passes the material declaration requirements for EU and most global markets without a waiver.","metaTitle":"Renesas 557G-05ALFT PCIe Clock Generator, 200 MHz, 20-TSSOP","metaDescription":"Renesas 557G-05ALFT PLL clock source IC for PCI Express, 200 MHz max, 1:4 fanout, HCSL/LVDS outputs, 20-TSSOP, active production.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Clock & Timing ICs"],"specifications":{"PLL":"Yes","Input":"Clock, Crystal","Output":"HCSL, LVDS","Package":"Tape & Reel (TR); Cut Tape (CT)","Main Purpose":"PCI Express (PCIe)","Mounting Type":"Surface Mount","Package / Case":"20-TSSOP (0.173\\\", 4.40mm Width)","Frequency - Max":"200MHz","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":"20-TSSOP","Differential - Input:Output":"No/Yes"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$4.0","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$4.04000","currency":"USD"},{"qty":10,"price":"$3.63000","currency":"USD"},{"qty":25,"price":"$3.43160","currency":"USD"},{"qty":100,"price":"$2.97390","currency":"USD"},{"qty":250,"price":"$2.82144","currency":"USD"},{"qty":3000,"price":"$2.02838","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/2b117581b17abc874290aad1d1bd9f8c.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the 557G-05ALFT's listed PLL status?","answer":"Yes — the device integrates a phase-locked loop for frequency synthesis and jitter cleaning from the crystal or clock input."},{"question":"Will 557G-05ALFT drop into a board designed for 557G-05ALF without rewiring?","answer":"Functionally identical — same PLL, same 1:4 fanout, same 200 MHz max, same 20-TSSOP package and pinout. The only difference is the packaging format: 557G-05ALF ships in Tube, while -05ALFT ships in Tape & Reel. No board spin needed."},{"question":"What compliance documentation does Renesas provide for the 557G-05ALFT?","answer":"Standard Renesas documentation includes the datasheet, PCN notifications, and material declaration; no UL or IEC certification is listed for this part."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/renesas/557G-05ALFT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/renesas/557G-05ALFT 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}}