{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"621SCMGI8","brand":"Renesas Electronics","brandSlug":"renesas","productSlug":"621SCMGI8","canonicalUrl":"https://icboms.com/renesas/621SCMGI8","factsUrl":"https://icboms.com/api/mcp/products/621SCMGI8","rawCanonicalId":null},"summary":{"shortDescription":"Renesas 621SCMGI8 Clock Buffer, 1:4 fanout, 200 MHz max frequency, 1.71V–3.465V supply, -40°C to 105°C, 8-VFQFN (2x2) package, single-ended input/output.","salesMarkdown":"## What this 1:4 clock buffer is and where it fits The Renesas 621SCMGI8 is a single-ended clock buffer that takes one clock input and drives four copies at up to 200 MHz. It is designed for general-purpose clock distribution on boards that need to fan out a reference clock to multiple loads. ## 200 MHz ceiling and single-ended I/O — what they mean for the design The 200 MHz maximum frequency covers most SPI, I2S, and parallel-bus clock trees, but it is not a differential buffer (No/No on both input and output). That means it cannot cleanly propagate a high-speed differential clock like LVPECL or LVDS — for those, look at a dedicated fanout buffer such as the 8SLVP2108. The single-ended input also means the device is sensitive to noise on the clock trace; keep the trace short and run a solid ground plane underneath. The 1:4 ratio is fixed — no configurability — so if you need a 1:2 or 1:8 fanout, this part does not stretch. ## Supply and temperature — industrial range, wide voltage The 1.71 V to 3.465 V supply covers the three common digital rail voltages: 1.8 V, 2.5 V, and 3.3 V. At 1.8 V the margin is tight — the minimum is 1.71 V, so a 1.8 V rail with a 5% tolerance (1.71 V) just meets the spec. If your rail sags under load, consider a 2.5 V or 3.3 V supply for headroom. The -40°C to 105°C range is full industrial; the part can sit in an unventilated enclosure or near a warm processor without derating. ## Package and footprint — 8-VFQFN (2x2 mm) The 621SCMGI8 comes in an 8-VFQFN package with a 2 mm x 2 mm body (supplier device package 8-VFQFN). It is a surface-mount, leadless package with an exposed pad — the pad should be soldered to a ground plane for thermal and electrical continuity. ## Lifecycle and sourcing reality The 621SCMGI8 is listed as Active on the manufacturer's status — no last-time-buy or end-of-life notice. It is RoHS3 compliant. For a BOM line, this means no imminent obsolescence risk and no need to qualify a substitute for production. The closest functional peer is the 5PB1104CMGK/W from the same family: same 1:4 ratio, same 200 MHz ceiling, same LVCMOS output type, same supply and temperature range. The difference is the package — the 5PB1104 comes in a different 8-pin package — so verify footprint compatibility before swapping.","metaTitle":"Renesas 621SCMGI8 Clock Buffer, 1:4, 200 MHz, 8-VFQFN","metaDescription":"Renesas 621SCMGI8 clock buffer: 1:4 fanout, 200 MHz max, 1.71V–3.465V supply, -40°C to 105°C, 8-VFQFN. Active production.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Clock & Timing ICs"],"specifications":{"Type":"Clock Buffer","Input":"Clock","Output":"Clock","Package":"Tape & Reel (TR); Cut Tape (CT)","Mounting Type":"Surface Mount","Package / Case":"8-UFDFN","Frequency - Max":"200 MHz","lifecycle_stage":"eol_hot","Voltage - Supply":"1.71V ~ 3.465V","Number of Circuits":"1","Ratio - Input:Output":"1:4","Operating Temperature":"-40°C ~ 105°C (TA)","Supplier Device Package":"8-VFQFN (2x2)","Differential - Input:Output":"No/No"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.21","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$3.21000","currency":"USD"},{"qty":10,"price":"$2.88500","currency":"USD"},{"qty":25,"price":"$2.72720","currency":"USD"},{"qty":100,"price":"$2.36340","currency":"USD"},{"qty":250,"price":"$2.24220","currency":"USD"},{"qty":500,"price":"$2.01192","currency":"USD"},{"qty":1000,"price":"$1.69680","currency":"USD"},{"qty":4000,"price":"$1.61196","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/b876bf775c3504923f50a1f5ec314724.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is 621SCMGI8 compatible with 1.8V input logic?","answer":"Yes, the supply range includes 1.71 V to 3.465 V, so a 1.8 V input clock is within spec as long as the supply is at least 1.71 V."},{"question":"What is the equivalent or cross reference for 621SCMGI8?","answer":"The closest functional equivalent is the 5PB1104CMGK/W, which has the same 1:4 fanout, 200 MHz max, LVCMOS output, and industrial temp range. The packages differ — verify footprint compatibility before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/renesas/621SCMGI8","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/renesas/621SCMGI8 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}}