{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM2903WHYST","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"LM2903WHYST","canonicalUrl":"https://icboms.com/stmicroelectronics/LM2903WHYST","factsUrl":"https://icboms.com/api/mcp/products/LM2903WHYST","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics LM2903WHYST, dual differential comparator, AEC-Q100 qualified, -40 to 125°C, 2V to 36V supply, open-collector output, 8-MiniSO package.","salesMarkdown":"## Why the AEC-Q100 grade matters for your BOM The LM2903WHYST is the automotive-qualified variant of the industry-standard LM2903 dual differential comparator, carrying AEC-Q100 certification that qualifies it for under-hood and chassis-domain electronics where the base commercial-grade part would not pass reliability screening. ## Supply flexibility and output drive The 2V to 36V single-supply range (or ±1V to ±18V split) lets the same part work on 3.3V logic rails, 5V sensor supplies, or 24V truck battery buses without a local regulator — a BOM simplification for multi-voltage ECUs. Open-collector outputs rated for 20mA sink current interface directly with CMOS, TTL, or ECL logic families; the pull-up resistor choice sets the output high level, so the comparator can level-shift from a 12V sensor rail to a 3.3V microcontroller input without an external translator. ## Input precision for sensor thresholds Maximum input offset voltage of 7mV at 30V supply is tight enough for window comparators in overvoltage/undervoltage detection circuits; the 0.25µA max input bias current at 5V keeps the voltage error below 0.25mV when driving a 1kΩ source impedance. Quiescent current maxes at 2.5mA per package (both channels), so the part adds under 1.25mA per comparator channel to the supply budget — relevant for always-on battery-monitoring circuits where every milliamp counts. ## Package and rework perspective Housed in an 8-MiniSO (MSOP-8, 3.00mm width) package, the LM2903WHYST is a surface-mount part with a small thermal mass — it reflows cleanly with a standard 260°C peak profile and lifts easily under hot air without cooking adjacent components, as long as the pad layout includes a visible pin-1 chamfer. No official successor or second-source cross-reference is listed; for dual-sourcing resilience, the base LM2903 in a compatible package (e.g., SOIC-8) is a functional drop-in but lacks the AEC-Q100 qualification and extended temperature range.","metaTitle":"ST LM2903WHYST Differential Comparator, AEC-Q100","metaDescription":"ST LM2903WHYST dual differential comparator, AEC-Q100 qualified, -40 to 125°C, 2V to 36V supply, open-collector output.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Mfr":"STMicroelectronics","Type":"Differential","Series":"Automotive, AEC-Q100","Package":"Tape & Reel (TR); Cut Tape (CT)","Hysteresis":"-","Output Type":"CMOS, DTL, ECL, MOS, Open-Collector, TTL","Mounting Type":"Surface Mount","Package / Case":"8-TSSOP, 8-MSOP (0.118\\\", 3.00mm Width)","Product Status":"Active","lifecycle_stage":"eol_hot","CMRR, PSRR (Typ)":"-","Number of Elements":"2","Base Product Number":"LM2903","Operating Temperature":"-40°C~125°C","Current - Output (Typ)":"20mA","Propagation Delay (Max)":"-","Supplier Device Package":"8-MiniSO","Current - Quiescent (Max)":"2.5mA","Current - Input Bias (Max)":"0.25µA @ 5V","Voltage - Input Offset (Max)":"7mV @ 30V","Voltage - Supply, Single/Dual (±)":"2V ~ 36V, ±1V ~ 18V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.7100","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/4cef2e3ac5192d6e655981887fa15b5a.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM2903WHYST/alternatives.json"},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to LM2903WHYST in this component family?","answer":"The base LM2903 in an SOIC-8 package is pin-compatible and functionally identical, but it lacks the AEC-Q100 qualification and the -40 to 125°C temperature range — use it only for non-automotive, commercial-temperature applications."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/LM2903WHYST","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/LM2903WHYST when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T18:03:28.771Z","lastPublished":"2026-07-22T18:03:28.771Z","indexable":true}}