{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"551MILFT","brand":"Renesas Electronics","brandSlug":"renesas","productSlug":"551MILFT","canonicalUrl":"https://icboms.com/renesas/551MILFT","factsUrl":"https://icboms.com/api/mcp/products/551MILFT","rawCanonicalId":null},"summary":{"shortDescription":"Renesas ClockBlocks™ 551MILFT, Fanout Buffer (Distribution), 1:4 CMOS fanout, 160 MHz max, 3V to 5.5V supply, 8-SOIC package, -40°C to 85°C.","salesMarkdown":"## 160 MHz CMOS fanout buffer for clock distribution The Renesas 551MILFT is a single-circuit, 1:4 fanout buffer from the ClockBlocks™ family. It takes one CMOS input and delivers four CMOS outputs, with a maximum frequency of 160 MHz. The supply voltage range of 3V to 5.5V lets it sit on either a 3.3V or 5V rail without a level shifter. The non-differential I/O (CMOS in, CMOS out) makes it a straight drop-in for single-ended clock trees in industrial control, telecom, and data-acquisition systems where you need to distribute a reference clock to multiple loads without loading the source. ## Industrial temperature range and package Rated for -40°C to 85°C, this part covers the industrial temperature grade — suitable for factory-floor controllers, outdoor telecom cabinets, and HVAC systems that see ambient extremes but not under-hood automotive heat. The 8-SOIC package (0.154\" body width, 3.90 mm) is a standard footprint that routes easily on two-layer boards. Surface-mount assembly with no exposed pad means no thermal-via planning; just standard decoupling at the supply pin. ## Active lifecycle — no LTB pressure The 551MILFT carries an Active product status per the manufacturer, with ROHS3 compliance. For a BOM line that needs a stable clock-buffer source, this part does not carry the obsolescence risk that older logic families sometimes do. Store the reels dry — standard MSL handling applies, though the specific level is not listed here.","metaTitle":"551MILFT Clock Fanout Buffer, 1:4, 160 MHz, 8-SOIC","metaDescription":"551MILFT is an active ClockBlocks™ fanout buffer from Renesas. 1:4 CMOS fanout, 160 MHz max, 3V-5.5V supply, -40°C to 85°C.","metaKeywords":null},"attributes":{"series":"ClockBlocks™","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Clock & Timing ICs"],"specifications":{"Type":"Fanout Buffer (Distribution)","Input":"CMOS","Output":"CMOS","Series":"ClockBlocks™","Package":"Tape & Reel (TR); Cut Tape (CT)","Mounting Type":"Surface Mount","Package / Case":"8-SOIC (0.154\\\", 3.90mm Width)","Frequency - Max":"160 MHz","lifecycle_stage":"eol_hot","Voltage - Supply":"3V ~ 5.5V","Number of Circuits":"1","Ratio - Input:Output":"1:4","Operating Temperature":"-40°C ~ 85°C","Supplier Device Package":"8-SOIC","Differential - Input:Output":"No/No"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.81","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$2.81000","currency":"USD"},{"qty":10,"price":"$2.52400","currency":"USD"},{"qty":25,"price":"$2.38600","currency":"USD"},{"qty":100,"price":"$2.06800","currency":"USD"},{"qty":250,"price":"$1.96192","currency":"USD"},{"qty":500,"price":"$1.76044","currency":"USD"},{"qty":1000,"price":"$1.48470","currency":"USD"},{"qty":3000,"price":"$1.41047","currency":"USD"},{"qty":6000,"price":"$1.35744","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/fa862d754ef82345ce2a64305aed6530.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest functional second-source for 551MILFT?","answer":"A close functional peer is the 5PB1104CMGK/W, also a 1:4 clock buffer with LVCMOS outputs, but it operates at a lower supply voltage (1.71 V typical) and a higher maximum frequency (200 MHz). The 551MILFT's wider 3V-to-5.5V supply range makes it a better fit for legacy 5V logic systems, while the 5PB1104 targets lower-voltage, higher-speed designs. Verify pin-compatibility and timing margins before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/renesas/551MILFT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/renesas/551MILFT 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}}