{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM311DG4","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM311DG4","canonicalUrl":"https://icboms.com/texas-instruments/LM311DG4","factsUrl":"https://icboms.com/api/mcp/products/LM311DG4","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM311DG4, General Purpose Comparator, 1 Element, MOS/Open-Collector/Open-Emitter/TTL Output, 8-SOIC (0.154\", 3.90mm Width), Surface Mount, 0°C~70°C, 3.5V~30V Supply.","salesMarkdown":"## What the output flexibility means for your interface The LM311DG4 is a single general-purpose comparator from TI that gives you four output structure options in one package: MOS, open-collector, open-emitter, and TTL. That means you can drive a logic gate input directly, switch a relay coil through an open-collector pull-up, or level-shift between different voltage domains without an extra transistor stage. ## Supply rails and temperature — where this part fits It runs on a single supply from 3.5 V to 30 V, or split rails from ±1.75 V to ±15 V. The 7.5 mA quiescent current is a fixed overhead regardless of output state, so budget that into your rail capacity. ## Input offset and bias — the DC accuracy floor Maximum input offset voltage is 7.5 mV at ±15 V supplies, and maximum input bias current is 0.25 µA under the same condition. For a threshold-detection circuit (over-voltage latch, zero-crossing detector, window comparator) these numbers set the trip-point uncertainty. If you need sub-mV precision, this is not the part — look at an automotive-grade precision comparator instead. Surface-mount only; no through-hole variant in this suffix.","metaTitle":"LM311DG4 General Purpose Comparator, 8-SOIC, Active","metaDescription":"Texas Instruments LM311DG4 general-purpose comparator in 8-SOIC. Wide supply range 3.5V–30V, multiple output types (MOS, open-collector, open-emitter, TTL).","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":"Tube","Hysteresis":"-","Output Type":"MOS, Open-Collector, Open-Emitter, TTL","Mounting Type":"Surface Mount","Package / Case":"8-SOIC (0.154\\\", 3.90mm Width)","lifecycle_stage":"eol_hot","CMRR, PSRR (Typ)":"-","Number of Elements":"1","Base Product Number":"LM311","Operating Temperature":"0°C~70°C","Current - Output (Typ)":"-","Propagation Delay (Max)":"-","Supplier Device Package":"8-SOIC","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":"$2.5300","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/ec8e2a5499b559b49be1c25f16bcf454.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM311DG4/alternatives.json"},"ai":{"faq":[{"question":"Is LM311DG4 compatible with LM311P?","answer":"The LM311P is the DIP-8 through-hole version of the same die. The LM311DG4 is the surface-mount SOIC-8 variant. Electrically they are identical — same supply range, same output types, same input offset and bias specs. The only difference is the package and the mounting method. If your board uses an SOIC-8 footprint, the DG4 is the direct fit."},{"question":"What is the output type of LM311DG4?","answer":"The LM311DG4 supports four output structures: MOS, open-collector, open-emitter, and TTL. You select the output configuration by how you connect the output pin and the strobe/balance pins. Open-collector is the most common for driving loads referenced to a different supply rail; TTL output gives a direct logic-level swing without an external pull-up resistor."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM311DG4","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM311DG4 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}}