{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LMH0340SQ/NOPB","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LMH0340SQ-NOPB","canonicalUrl":"https://icboms.com/texas-instruments/LMH0340SQ-NOPB","factsUrl":"https://icboms.com/api/mcp/products/LMH0340SQ%2FNOPB","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LMH0340SQ/NOPB, specialized interface IC, SMBus (2-Wire/I²C) control, dual 2.5V/3.3V supply, 48-WFQFN Exposed Pad package, ROHS3 compliant, Active production.","salesMarkdown":"## Specialized interface with SMBus control for video equipment The LMH0340SQ/NOPB is a specialized interface IC from Texas Instruments, designed for video equipment applications where an SMBus (2-Wire/I²C) control bus is required for configuration and monitoring. It operates from a dual supply of 2.5V and 3.3V, allowing direct integration into mixed-voltage systems without an extra regulator on the BOM. Housed in a 48-WQFN (7x7) package with an exposed pad for thermal management, this part is suited for surface-mount assembly in broadcast, professional video, and surveillance equipment. ## Supply rails and control bus The dual supply voltage range — 2.5V and 3.3V — simplifies power tree design in systems that already carry both rails. The SMBus interface uses the same two-wire protocol as I²C, so existing firmware drivers for I²C peripherals can be adapted with minimal changes. Compared to the LMH0344SQE/NOPB which uses a Serial interface, or the LMH0394SQ/NOPB which uses SPI Serial, the LMH0340SQ/NOPB's SMBus control is the right choice when the system already has an I²C bus available and does not need the higher data rates of SPI. ## Active production — no lifecycle risk ROHS3 compliance is confirmed. The part is available in Tape & Reel (TR) and Cut Tape (CT) options, covering both volume production and prototype quantities. Sourced per RFQ against your BOM line.","metaTitle":"LMH0340SQ/NOPB – TI Specialized Interface IC, SMBus, 48-WQFN","metaDescription":"Texas Instruments LMH0340SQ/NOPB specialized interface IC with SMBus (2-Wire/I²C) control, dual 2.5V/3.3V supply, 48-WQFN package.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Sensors & Transducers"],"specifications":{"Package":"Tape & Reel (TR); Cut Tape (CT)","Interface":"SMBus (2-Wire/I²C)","Applications":"Video Equipment","Mounting Type":"Surface Mount","Package / Case":"48-WFQFN Exposed Pad","lifecycle_stage":"eol_hot","Voltage - Supply":"2.5V, 3.3V","Supplier Device Package":"48-WQFN (7x7)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$37.49","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$37.49000","currency":"USD"},{"qty":10,"price":"$34.57400","currency":"USD"},{"qty":25,"price":"$33.02000","currency":"USD"},{"qty":100,"price":"$29.52360","currency":"USD"},{"qty":250,"price":"$28.16400","currency":"USD"},{"qty":1000,"price":"$27.48600","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/d09c0f1ce309388bc9c6d4d995d8e2e4.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the LMH0340SQ/NOPB used for?","answer":"It is a specialized interface IC for video equipment, controlled via an SMBus (2-Wire/I²C) bus. Typical applications include broadcast video routers, professional cameras, and surveillance systems that need remote configuration and status monitoring over a two-wire bus."},{"question":"Can the LMH0340SQ/NOPB be replaced with a different part number?","answer":"The LMH0340SQX/NOPB is a functional alternative with the same package and interface. The LMH0344SQE/NOPB and LMH0394SQ/NOPB use different control buses (Serial and SPI respectively) and are not direct drop-in replacements."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LMH0340SQ-NOPB","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LMH0340SQ-NOPB 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}}