{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LTC1440IS8#PBF","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"LTC1440IS8PBF","canonicalUrl":"https://icboms.com/analog-devices/LTC1440IS8PBF","factsUrl":"https://icboms.com/api/mcp/products/LTC1440IS8%23PBF","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices LTC1440IS8#PBF, single comparator with integrated voltage reference, 50mV hysteresis, CMOS/TTL output, 4.4µA max quiescent current, 15µs propagation delay, 8-SOIC surface-mount package, -40°C to 85°C operating range.","salesMarkdown":"The LTC1440IS8#PBF from Analog Devices integrates a single comparator with a precision 1.221V reference and 50mV of built-in hysteresis, saving an external reference IC and two resistors on the BOM. The reference is trimmed to ±1.5% initial accuracy, which is tight enough for threshold detection in battery monitors, over-voltage/under-voltage lockouts, and window comparators without additional calibration. ## Propagation delay and output drive — what the 15µs and 40mA numbers tell you The 15µs maximum propagation delay is a power-management timing spec, not a high-speed comparator number. This part responds to an over-current or over-voltage event in microseconds, which is fast enough to protect a MOSFET gate or trigger a latch before silicon damage occurs, but it will not close a control loop at switching frequencies above a few tens of kHz. The 40mA typical output current lets the comparator drive a logic input, an LED indicator, or a small relay directly, though a series resistor is still needed when driving a gate or base. The CMOS/TTL output swings rail-to-rail and interfaces cleanly with 3.3V or 5V logic without a level shifter. The CMRR and PSRR are both 80dB typical, which means the comparator rejects supply ripple and common-mode noise well enough to maintain a stable threshold in a noisy 24V industrial backplane.","metaTitle":"LTC1440IS8#PBF Comparator with Voltage Reference, 4.4µA","metaDescription":"LTC1440IS8#PBF single comparator with integrated 50mV hysteresis and 1.221V reference. 4.4µA quiescent current, 2V to 11V supply. 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-SOIC (0.154\\\", 3.90mm Width)","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-SO","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":"$6.07","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$6.07000","currency":"USD"},{"qty":10,"price":"$5.44900","currency":"USD"},{"qty":25,"price":"$5.15160","currency":"USD"},{"qty":100,"price":"$4.46470","currency":"USD"},{"qty":250,"price":"$4.23576","currency":"USD"},{"qty":500,"price":"$3.80074","currency":"USD"},{"qty":1000,"price":"$3.24000","currency":"USD"}]},"links":{"datasheetUrl":"https://www.analog.com/media/en/technical-documentation/data-sheets/144012fd.pdf","sourceUrl":null},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/LTC1440IS8PBF","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/LTC1440IS8PBF 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}}