{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM2903HD","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"LM2903HD","canonicalUrl":"https://icboms.com/stmicroelectronics/LM2903HD","factsUrl":"https://icboms.com/api/mcp/products/LM2903HD","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics LM2903HD dual general-purpose comparator, 8-SOIC surface-mount package, -40°C to 150°C operating temperature, 2V to 36V single/±1V to ±18V dual supply, 16mA typical output at 5V, 0.25µA input bias, 7mV input offset.","salesMarkdown":"## Dual comparator rated for 150°C ambient The STMicroelectronics LM2903HD is a dual general-purpose comparator in an 8-SOIC package. It operates from a single 2V to 36V supply or dual ±1V to ±18V rails, making it compatible with common 3.3V, 5V, 12V, and 24V system buses without a secondary regulator. The -40°C to 150°C temperature range places this part in the automotive-underhood and industrial high-temperature class — suitable for engine bay electronics, exhaust sensing, and motor-drive feedback where standard 85°C or 105°C parts would derate or fail. ## Output drive and input characteristics Each comparator can sink 16mA typical at 5V supply through the open-collector output, which interfaces directly with CMOS, TTL, DTL, ECL, or MOS logic families without a level translator. The 0.25µA maximum input bias current at 5V preserves accuracy when sensing high-impedance sources like thermistors, photodiodes, or current-shunt amplifiers. Maximum input offset voltage is 7mV at 30V supply. For a 5V rail with a 1V reference threshold, this contributes roughly 0.7% uncertainty — acceptable for overvoltage/undervoltage detection and window comparators, but not for precision zero-crossing or low-side current sensing below 10mV. Quiescent current is capped at 2.5mA for both comparators combined, which keeps the thermal load low in the 8-SOIC package even at 150°C ambient. This is a last-time-buy / surplus sourcing scenario — no factory lead time applies.","metaTitle":"LM2903HD Dual Comparator, -40°C to 150°C, 8-SOIC","metaDescription":"STMicroelectronics LM2903HD dual general-purpose comparator. 2V to 36V supply, 16mA output at 5V, 0.25µA input bias. 8-SOIC package. Request quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Analog & Data Acquisition"],"specifications":{"Mfr":"STMicroelectronics","Type":"General Purpose","Series":"-","Package":"Tube","Hysteresis":"-","Output Type":"CMOS, DTL, ECL, MOS, Open-Collector, TTL","Mounting Type":"Surface Mount","Package / Case":"8-SOIC (0.154\\\", 3.90mm Width)","Product Status":"Obsolete","lifecycle_stage":"eol_hot","CMRR, PSRR (Typ)":"-","Number of Elements":"2","Base Product Number":"LM2903","Operating Temperature":"-40°C~150°C","Current - Output (Typ)":"16mA @ 5V","Propagation Delay (Max)":"-","Supplier Device Package":"8-SOIC","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":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/8633f5fd89c375ff3789be8e127c9d17.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM2903HD/alternatives.json"},"ai":{"faq":[{"question":"What is the replacement for LM2903HD?","answer":"For a pin-compatible alternative, look at the LM2903 series from other manufacturers — confirm the temperature grade and output structure match your application."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/LM2903HD","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/LM2903HD 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}}