{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LP311DR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LP311DR","canonicalUrl":"https://icboms.com/texas-instruments/LP311DR","factsUrl":"https://icboms.com/api/mcp/products/LP311DR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LP311DR differential comparator, single element, 8-SOIC, open-collector/open-emitter outputs, surface-mount, 3.5 V to 30 V single / ±1.75 V to 15 V dual supply.","salesMarkdown":"## Comparator output structure and supply flexibility The LP311DR is a single differential comparator with both open-collector and open-emitter outputs — the open-collector pulls low against a pull-up to any rail up to 30 V, while the open-emitter sinks current from a negative supply or ground reference, giving the designer two level-shifting paths from one comparator. ## Quiescent draw and input offset — the practical limits Maximum quiescent current is 300 µA — low enough for battery-powered threshold detection but not the µA-class sleep current of a nanopower comparator; budget this into the system's always-on power budget. Input offset voltage is 7.5 mV max at ±15 V — for a 10 mV hysteresis window the comparator's own offset eats most of the margin, so plan a wider threshold or a lower-offset part if the trip point needs tighter than 15 mV accuracy. Maximum input bias current is 0.1 µA at ±15 V — negligible when driving from a 1 kΩ source (100 µV drop) but significant from a 1 MΩ source (100 mV drop); the bias current flows into the inputs and must be balanced with equal source impedance on both pins.","metaTitle":"Texas Instruments LP311DR Differential Comparator, 8-SOIC","metaDescription":"Texas Instruments LP311DR differential comparator, single element, open-collector & open-emitter outputs.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Type":"Differential","Package":"Tape & Reel (TR); Cut Tape (CT)","Output Type":"Open-Collector, Open-Emitter","Mounting Type":"Surface Mount","Package / Case":"8-SOIC (0.154\\\", 3.90mm Width)","lifecycle_stage":"eol_hot","Number of Elements":"1","Operating Temperature":"0°C ~ 70°C","Supplier Device Package":"8-SOIC","Current - Quiescent (Max)":"300µA","Current - Input Bias (Max)":"0.1µA @ ±15V","Voltage - Input Offset (Max)":"7.5mV @ ±15V","Voltage - Supply, Single/Dual (±)":"3.5V ~ 30V, ±1.75V ~ 15V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.36","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.36000","currency":"USD"},{"qty":10,"price":"$1.21300","currency":"USD"},{"qty":25,"price":"$1.15080","currency":"USD"},{"qty":100,"price":"$0.94550","currency":"USD"},{"qty":250,"price":"$0.88380","currency":"USD"},{"qty":500,"price":"$0.78104","currency":"USD"},{"qty":1000,"price":"$0.61660","currency":"USD"},{"qty":2500,"price":"$0.57550","currency":"USD"},{"qty":5000,"price":"$0.54672","currency":"USD"},{"qty":12500,"price":"$0.52617","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/da25d2de21eb4ce7bf5eeac360721a80.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to LP311DR in this Analog & Data Acquisition family?","answer":"No official pin-compatible successor or cross-reference is recorded for the LP311DR. The LM311 series from TI shares the same functional block (single differential comparator with open-collector/open-emitter outputs) but package and pinout should be verified against the specific BOM position before substitution."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LP311DR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LP311DR when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:45:10.375Z","lastPublished":"2026-07-22T19:45:10.375Z","indexable":true}}