{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"USB5742BT-I/2G","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"USB5742BT-I-2G","canonicalUrl":"https://icboms.com/microchip/USB5742BT-I-2G","factsUrl":"https://icboms.com/api/mcp/products/USB5742BT-I%2F2G","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology USB5742BT-I/2G USB Hub Controller, 2 Ports, USB 2.0 & USB 3.2, SMBus & SPI Interface, 56-VFQFN Exposed Pad, -40°C to +85°C, Tape & Reel.","salesMarkdown":"## Two-port USB hub controller with USB 3.2 and industrial temperature The Microchip USB5742BT-I/2G is a two-port USB hub controller supporting both USB 2.0 and USB 3.2 protocols, making it suitable for high-speed peripheral expansion in embedded systems that need backward compatibility with legacy USB 2.0 devices. The dual supply rails — 1.08V to 1.32V for the core and 3V to 3.6V for the I/O — require a regulated power tree; the 1.2V rail should be derived from a low-noise LDO to keep the SerDes jitter within the USB 3.2 eye mask. ## Package and board integration — 56-VFQFN exposed pad The 56-VFQFN package (7x7 mm body, 0.5 mm pitch) with exposed thermal pad requires a solder-paste stencil opening that covers at least 50% of the pad area, and the PCB land pattern should connect the pad to a copper plane on an inner layer for thermal management — the junction-to-board thermal resistance is dominated by this pad. The SMBus and SPI interfaces share the same pins in a multiplexed configuration — the strapping resistor on the CFG_SEL pin at power-up selects which protocol the host uses for register access; leaving it floating defaults to SMBus. ## Active lifecycle and compliance documentation ROHS3 compliant (exemption-free), covering the full EU RoHS substance ban including the four phthalates added in Directive 2015/863. Microchip provides the datasheet, application notes for USB 3.2 PHY layout, and an IBIS model for signal-integrity simulation — these are available from the manufacturer's documentation portal under the USB5742 product family.","metaTitle":"Microchip USB5742BT-I/2G USB Hub Controller, USB 2.0/3.2","metaDescription":"Microchip USB5742BT-I/2G USB hub controller, 2 ports, USB 2.0 & USB 3.2, SPI/SMBus interface, -40 to +85°C, 56-VFQFN. Active production, ROHS3. Request quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Package":"Tape & Reel (TR); Cut Tape (CT)","Function":"Hub Controller","Protocol":"USB","Interface":"SMBus, SPI","Standards":"USB 2.0, USB 3.2","Package / Case":"56-VFQFN Exposed Pad","lifecycle_stage":"eol_hot","Voltage - Supply":"1.08V ~ 1.32V, 3V ~ 3.6V","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"56-VQFN (7x7)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$7.18","priceTiers":[{"qty":1,"price":"$7.18000","currency":"USD"},{"qty":25,"price":"$6.93000","currency":"USD"},{"qty":3000,"price":"$6.93000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/72547762ec474942f0db46dc7d962201.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/USB5742BT-I%2F2G/alternatives.json"},"ai":{"faq":[{"question":"How does USB5742BT-I/2G compare with USB2514BT/M2?","answer":"The USB5742BT-I/2G supports both USB 2.0 and USB 3.2, whereas the USB2514BT/M2 is limited to USB 2.0 only. The package and pinout differ — the USB5742 uses a 56-VFQFN, while the USB2514 comes in a 36-QFN — so they are not drop-in replacements without a board spin."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/USB5742BT-I-2G","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/USB5742BT-I-2G when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}