{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LTC1440IDD#PBF","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"LTC1440IDDPBF","canonicalUrl":"https://icboms.com/analog-devices/LTC1440IDDPBF","factsUrl":"https://icboms.com/api/mcp/products/LTC1440IDD%23PBF","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices LTC1440IDD#PBF single comparator with integrated voltage reference, 4.4µA max quiescent current, 50mV hysteresis, CMOS/TTL output, 15µs propagation delay, 8-WFDFN exposed pad package, -40 to 85°C operating range.","salesMarkdown":"## Single comparator with a 1.182V reference — what that saves you The LTC1440IDD#PBF is a single comparator from Analog Devices that packs its own 1.182V voltage reference on-chip. That means one less external reference IC and two fewer bypass caps on the BOM — a clean threshold-detection block for battery monitors, over-voltage locks, or window comparators where board space is tight. Quiescent current maxes out at 4.4 µA, so it won't drain a coin cell or a backup supercap while it sits there watching a voltage rail. The 50 mV of internal hysteresis keeps the output from bouncing on a slowly ramping input — no external positive-feedback resistor needed. Outputs are CMOS and TTL compatible, so it drives a logic gate input or a microcontroller GPIO directly. Propagation delay is 15 µs — fine for DC threshold alarms and power-good flags, not for switching-regulator feedback loops. ## Supply range and temperature — where it fits Single-supply operation from 2 V to 11 V, or split supplies from ±1 V to ±5.5 V. The -40°C to 85°C range covers industrial cabinets, outdoor telecom enclosures, and automotive cabin-zone electronics. Input offset voltage is 10 mV max at 5 V — typical for a micropower comparator, but worth checking if your threshold needs better than 1% accuracy without trimming. CMRR and PSRR are both 80 dB typical, so supply ripple and common-mode shifts won't walk the trip point much. ## Sourcing and lifecycle Lifecycle status is Active per the manufacturer, and the part is ROHS3 compliant. No end-of-life notice, no last-time-buy window to track. For a BOM freeze or a new design, this line item is stable — no near-term obsolescence risk.","metaTitle":"LTC1440IDD#PBF Comparator with Voltage Reference, 4.4µA","metaDescription":"LTC1440IDD#PBF single comparator with integrated 1.182V reference. 4.4µA quiescent, 50mV hysteresis, CMOS/TTL output, -40 to 85°C. Active, ROHS3.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["DC-DC Power Modules"],"specifications":{"Type":"with Voltage Reference","Package":"Tube","Hysteresis":"50mV","Output Type":"CMOS, TTL","Mounting Type":"Surface Mount","Package / Case":"8-WFDFN Exposed Pad","lifecycle_stage":"eol_hot","CMRR, PSRR (Typ)":"80dB CMRR, 80dB PSRR","Number of Elements":"1","Operating Temperature":"-40°C ~ 85°C","Current - Output (Typ)":"40mA","Propagation Delay (Max)":"15µs","Supplier Device Package":"8-DFN (3x3)","Current - Quiescent (Max)":"4.4µA","Voltage - Input Offset (Max)":"10mV @ 5V","Voltage - Supply, Single/Dual (±)":"2V ~ 11V, ±1V ~ 5.5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$6.74","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$6.74000","currency":"USD"},{"qty":10,"price":"$6.05500","currency":"USD"},{"qty":25,"price":"$5.72400","currency":"USD"},{"qty":100,"price":"$4.96080","currency":"USD"},{"qty":250,"price":"$4.70640","currency":"USD"},{"qty":500,"price":"$4.22304","currency":"USD"},{"qty":1000,"price":"$3.60000","currency":"USD"}]},"links":{"datasheetUrl":"https://www.analog.com/media/en/technical-documentation/data-sheets/144012fd.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Does LTC1440IDD#PBF include a voltage reference?","answer":"Yes — it is a comparator with an integrated voltage reference (1.182V typical). That is the distinguishing feature of the LTC1440 family: you get the comparator and the reference in one package."},{"question":"Are there drop-in alternatives for LTC1440IDD#PBF?","answer":"The LTC1440CMS8#PBF is the same single comparator with reference but in an MSOP-8 package and a 0°C to 70°C temperature range — same electrical specs, different footprint and temperature grade. The LTC1440CN8#PBF is the through-hole DIP-8 version, also 0°C to 70°C. Neither is a direct drop-in for the 8-DFN land pattern."},{"question":"What is the typical supply current of LTC1440IDD#PBF?","answer":"Maximum quiescent current is 4.4 µA. That is the total current draw of the comparator plus the internal reference — no external bias resistors needed."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/LTC1440IDDPBF","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/LTC1440IDDPBF when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}