{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM311PSR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM311PSR","canonicalUrl":"https://icboms.com/texas-instruments/LM311PSR","factsUrl":"https://icboms.com/api/mcp/products/LM311PSR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM311PSR, general-purpose comparator, single element, 50mA typical output, open-collector/open-emitter, DTL/MOS/RTL/TTL output types, 8-SOIC surface-mount package, 0°C to 70°C operating temperature.","salesMarkdown":"## General-purpose comparator with flexible output drive The LM311PSR is a single general-purpose comparator from Texas Instruments, designed for level detection, zero-crossing, and pulse-width modulation circuits where the output must interface with multiple logic families or drive a load directly. Its output stage supports DTL, MOS, open-collector, open-emitter, RTL, and TTL — meaning it can pull down a relay coil, drive a CMOS gate input, or feed a TTL counter without an external buffer. Typical output current is 50 mA, enough to switch a small relay or LED indicator directly from the comparator pin. Runs on a single supply from 3.5 V to 30 V, or dual supplies from ±1.75 V to ±15 V — covers 5 V logic rails, 12 V industrial buses, and ±15 V op-amp supplies without a separate regulator. Maximum input offset voltage is 7.5 mV at ±15 V, and maximum input bias current is 0.25 µA at the same condition — tight enough for precision threshold sensing in thermostat or battery-monitor circuits. Quiescent current maxes at 7.5 mA — not a low-power part, but acceptable for line-powered or moderate-duty-cycle applications. Not rated for automotive or extended industrial environments; if the ambient drops below freezing or exceeds 70°C, look at the LM311M or LM311N variants with wider temperature grades.","metaTitle":"LM311PSR General Purpose Comparator, 50mA Output, SOIC-8","metaDescription":"LM311PSR general-purpose comparator from Texas Instruments. Single element, 50mA output, open-collector/emitter, DTL/MOS/RTL/TTL. Active lifecycle.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Mfr":"Texas Instruments","Type":"General Purpose","Series":"-","Package":"Tape & Reel (TR); Cut Tape (CT)","Hysteresis":"-","Output Type":"DTL, MOS, Open-Collector, Open-Emitter, RTL, TTL","Mounting Type":"Surface Mount","Package / Case":"8-SOIC (0.209\\\", 5.30mm Width)","Product Status":"Active","lifecycle_stage":"eol_hot","CMRR, PSRR (Typ)":"-","Number of Elements":"1","Base Product Number":"LM311","Operating Temperature":"0°C~70°C","Current - Output (Typ)":"50mA","Propagation Delay (Max)":"-","Supplier Device Package":"8-SO","Current - Quiescent (Max)":"7.5mA","Current - Input Bias (Max)":"0.25µA @ ±15V","Voltage - Input Offset (Max)":"7.5mV @ ±15V","Voltage - Supply, Single/Dual (±)":"3.5V ~ 30V, ±1.75V ~ 15V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.1594","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/ec8e2a5499b559b49be1c25f16bcf454.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM311PSR/alternatives.json"},"ai":{"faq":[{"question":"What is the output type of LM311PSR?","answer":"The output stage supports DTL, MOS, open-collector, open-emitter, RTL, and TTL — giving flexibility to interface with different logic families or drive loads directly."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM311PSR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM311PSR 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}}