{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM311H/NOPB","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM311H-NOPB","canonicalUrl":"https://icboms.com/texas-instruments/LM311H-NOPB","factsUrl":"https://icboms.com/api/mcp/products/LM311H%2FNOPB","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM311H/NOPB general-purpose voltage comparator, TO-99-8 metal can, through-hole, open-collector/open-emitter output, 5V–36V supply, 0°C–70°C.","salesMarkdown":"## Supply range and output flexibility The LM311H/NOPB: This general-purpose comparator runs from a single 5 V to 36 V supply, or from dual ±2.5 V to ±18 V rails — covering common industrial and instrumentation bus voltages without a secondary regulator. The output stage supports DTL, TTL, RTL, MOS, open-collector, and open-emitter configurations, so it interfaces directly with 5 V logic, higher-voltage relays, or discrete transistor loads without a level translator. ## TO-99 metal can — through-hole fit Housed in a TO-99-8 metal can, the LM311H/NOPB is a through-hole device suited for socketed or soldered assemblies where hermetic sealing or mechanical robustness is preferred over surface-mount density. The metal can provides better thermal conduction than plastic DIPs and shields the die from ambient light and RF interference — relevant for comparator circuits near switching power stages or in high-vibration environments. ## Input offset and bias — threshold accuracy For a 10 kΩ source impedance, the bias current contributes 2.5 mV of additional offset — enough to shift a 50 mV threshold by 5 %, so the source impedance matters in precision threshold designs. Quiescent current maxes at 7.5 mA, making this comparator suitable for always-on monitoring circuits where the power budget allows a few milliamps per channel.","metaTitle":"Texas Instruments LM311H/NOPB Voltage Comparator, TO-99-8","metaDescription":"Texas Instruments LM311H/NOPB general-purpose voltage comparator in TO-99-8 metal can. Active production, RoHS3 compliant. Wide supply range 5V–36V.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Mfr":"Texas Instruments","Type":"General Purpose","Series":"-","Package":"Box","Hysteresis":"-","Output Type":"DTL, MOS, Open-Collector, Open-Emitter, RTL, TTL","Mounting Type":"Through Hole","Package / Case":"TO-99-8 Metal Can","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)":"-","Propagation Delay (Max)":"-","Supplier Device Package":"TO-99-8","Current - Quiescent (Max)":"7.5mA","Current - Input Bias (Max)":"0.25µA @ ±15V","Voltage - Input Offset (Max)":"7.5mV @ ±15V","Voltage - Supply, Single/Dual (±)":"5V ~ 36V, ±2.5V ~ 18V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$13.4500","priceTiers":[{"qty":1,"price":"$13.45000","currency":"USD"},{"qty":10,"price":"$12.36300","currency":"USD"},{"qty":25,"price":"$11.85040","currency":"USD"},{"qty":100,"price":"$10.44110","currency":"USD"},{"qty":250,"price":"$9.92864","currency":"USD"},{"qty":500,"price":"$9.28810","currency":"USD"},{"qty":1000,"price":"$9.06450","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/faa90af85c7421a0ac69f6b420166167.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM311H%2FNOPB/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy LM311H/NOPB and how do I get a price?","answer":"The LM311H/NOPB is an active Texas Instruments part. Submit an RFQ for a firm quote."},{"question":"Will LM311H/NOPB drop into a panel that was specified around LP311DR without rewiring?","answer":"No — the LP311DR is a surface-mount SOIC-8 part, while the LM311H/NOPB is a through-hole TO-99-8 metal can. They are not pin-compatible or footprint-compatible. A board spin or adapter is required to swap between them."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM311H-NOPB","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM311H-NOPB when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}