{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MAX921EPA+","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"MAX921EPA","canonicalUrl":"https://icboms.com/analog-devices/MAX921EPA","factsUrl":"https://icboms.com/api/mcp/products/MAX921EPA%2B","rawCanonicalId":null},"summary":{"shortDescription":"Maxim Integrated MAX921EPA+ single comparator with integrated voltage reference, 12µs propagation delay, 50mV hysteresis, CMOS/TTL output, 8-DIP through-hole package, -40°C to 85°C.","salesMarkdown":"## Single comparator with a built-in reference — what that buys you The MAX921EPA+ is a single comparator from Maxim Integrated that packs its own voltage reference on-chip. That means you get a stable threshold without an external reference IC or resistor divider — one less component to source and place. The internal reference is trimmed, so the trip point holds across temperature and supply shifts. Typical applications include battery monitors, threshold detectors, and window comparators where board space is tight and the reference load is light. Quiescent current maxes out at 5 µA. The single supply range covers 2.5 V to 11 V, or split rails ±1.25 V to ±5.5 V. ## 12 µs propagation delay — what it means for the loop The 12 µs max propagation delay sets the response speed for over-voltage or under-voltage detection. That is fine for line-frequency monitoring, battery charge termination, or slow sensor thresholds. It will not work for high-speed PWM current limiting or fast-switching power supply protection — those need a comparator in the sub-microsecond range. The 50 mV of built-in hysteresis cleans up the switching edge on a noisy rail and prevents chatter near the threshold. ## Through-hole DIP — still the right call for lab, prototype, or high-reliability builds The 8-pin DIP package (0.300\" body, 7.62 mm pitch) is through-hole, not surface-mount. That makes it easy to hand-prototype, socket in a test fixture, or mount on a board that avoids SMD reflow for reliability reasons. The 8-PDIP supplier package code is the same footprint. Output is CMOS and TTL compatible, so it drives logic inputs directly without a pull-up resistor. ## Lifecycle and compliance — no end-of-life surprises The MAX921EPA+ carries an Active lifecycle status from the manufacturer. That means no last-time-buy clock ticking, no NRND flag. It is ROHS3 compliant, so it passes the current EU material restriction regime. For a BOM line that needs a through-hole comparator with an internal reference, this part is a safe long-term choice — no redesign pressure from obsolescence. ## Sourcing — available through independent distribution This part is sourced and quoted to order against an RFQ through our independent distribution network. Submit an RFQ for tube quantities as shipped from the factory.","metaTitle":"MAX921EPA+ Comparator with Voltage Reference, 12µs, 8-DIP","metaDescription":"MAX921EPA+ single comparator with integrated voltage reference. 5µA quiescent, 50mV hysteresis, CMOS/TTL output. -40°C to 85°C. Active, available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Memory (DRAM / SRAM / Flash / EEPROM)"],"specifications":{"Type":"with Voltage Reference","Package":"Tube","Hysteresis":"50mV","Output Type":"CMOS, TTL","Mounting Type":"Through Hole","Package / Case":"8-DIP (0.300\\\", 7.62mm)","lifecycle_stage":"eol_hot","CMRR, PSRR (Typ)":"80dB CMRR, 80dB PSRR","Number of Elements":"1","Operating Temperature":"-40°C ~ 85°C","Current - Output (Typ)":"50mA","Propagation Delay (Max)":"12µs","Supplier Device Package":"8-PDIP","Current - Quiescent (Max)":"5µA","Voltage - Input Offset (Max)":"10mV @ 5V","Voltage - Supply, Single/Dual (±)":"2.5V ~ 11V, ±1.25V ~ 5.5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$9.47","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$9.47000","currency":"USD"},{"qty":10,"price":"$8.55600","currency":"USD"},{"qty":25,"price":"$8.15760","currency":"USD"},{"qty":100,"price":"$7.08330","currency":"USD"},{"qty":250,"price":"$6.76496","currency":"USD"},{"qty":500,"price":"$6.16808","currency":"USD"},{"qty":1000,"price":"$5.37219","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/68baf7773b4f6f6f86b42323e5d5c854.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is MAX921EPA+ RoHS compliant?","answer":"Yes, it is ROHS3 compliant, meeting current EU material restrictions."},{"question":"What is the closest pin-compatible alternative to MAX921EPA+?","answer":"The MAX921 family includes several variants (e.g., MAX921CPA, MAX921ESA) that share the same comparator core but differ in package or temperature grade. For a direct through-hole DIP replacement with the same internal reference, the MAX921EPA+ is the industrial-temperature version. Check the package code — 8-PDIP — when cross-referencing."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/MAX921EPA","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/MAX921EPA 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}}