{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MAX9108ESD+","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"MAX9108ESD","canonicalUrl":"https://icboms.com/analog-devices/MAX9108ESD","factsUrl":"https://icboms.com/api/mcp/products/MAX9108ESD%2B","rawCanonicalId":null},"summary":{"shortDescription":"Maxim Integrated MAX9108ESD+, General Purpose quad comparator, 25ns propagation delay, 4.5V to 5.5V supply, TTL output, 14-SOIC package, -40°C to 85°C.","salesMarkdown":"## Quad comparator with 25 ns propagation delay — signal-chain fit The Maxim Integrated MAX9108ESD+ is a quad general-purpose comparator packing four independent comparators into a single 14-SOIC package. Its 25 ns maximum propagation delay makes it a candidate for high-speed threshold detection, zero-crossing circuits, and fast overcurrent or overvoltage fault sensing where the decision needs to land within one or two clock cycles of a moderate-speed microcontroller. The supply range is 4.5 V to 5.5 V single supply. TTL-compatible outputs simplify interfacing to 5 V logic families without level translation. Industrial temperature grade (-40°C to 85°C) suits outdoor telecom cabinets, factory automation panels, and under-hood automotive auxiliary circuits where the ambient can swing hard. ## 25 ns — what the propagation delay buys you At 25 ns max, this comparator can resolve a 40 MHz input transition. That is fast enough for switching power supply feedback loops, high-speed data line receivers, and pulse-width measurement on encoder outputs. The trade-off is quiescent current: 700 µA max across all four channels, which is modest for the speed class but not a micropower part. Input offset voltage is trimmed to 1.6 mV max at 5 V, and input bias current stays under 0.125 µA — both tight enough for precision threshold setting without external trimming in most industrial signal chains. CMRR and PSRR both sit at 86.02 dB typical, meaning the comparator rejects common-mode noise and supply ripple well, so the decision threshold stays stable even on a noisy 5 V rail. ## 14-SOIC package — rework and layout notes The 14-SOIC (0.154\" body width, 3.90 mm) is a standard footprint, easy to route on two-layer boards. ## Lifecycle and sourcing — active, no LTB pressure ROHS3 compliant. That means it is safe to qualify into a new production BOM or to replenish a sustaining line without worrying about a last-time-buy window closing.","metaTitle":"MAX9108ESD+ Quad Comparator, 25ns, 14-SOIC","metaDescription":"MAX9108ESD+ quad general-purpose comparator: 25ns propagation delay, 4.5V-5.5V supply, TTL output, -40°C to 85°C. Active production.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["DC-DC Power Modules"],"specifications":{"Type":"General Purpose","Package":"Tube","Hysteresis":"2mV","Output Type":"TTL","Mounting Type":"Surface Mount","Package / Case":"14-SOIC (0.154\\\", 3.90mm Width)","lifecycle_stage":"eol_hot","CMRR, PSRR (Typ)":"86.02dB CMRR, 86.02dB PSRR","Number of Elements":"4","Operating Temperature":"-40°C ~ 85°C","Propagation Delay (Max)":"25ns","Supplier Device Package":"14-SOIC","Current - Quiescent (Max)":"700µA","Current - Input Bias (Max)":"0.125µA @ 5V","Voltage - Input Offset (Max)":"1.6mV @ 5V","Voltage - Supply, Single/Dual (±)":"4.5V ~ 5.5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$5.33","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$5.33000","currency":"USD"},{"qty":10,"price":"$4.78400","currency":"USD"},{"qty":25,"price":"$4.52240","currency":"USD"},{"qty":100,"price":"$3.91930","currency":"USD"},{"qty":250,"price":"$3.71832","currency":"USD"},{"qty":500,"price":"$3.33644","currency":"USD"},{"qty":1000,"price":"$2.81386","currency":"USD"},{"qty":2500,"price":"$2.67317","currency":"USD"}]},"links":{"datasheetUrl":"https://datasheets.maximintegrated.com/en/ds/MAX9107-MAX9109.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the propagation delay of MAX9108ESD+?","answer":"The maximum propagation delay is 25 ns, which supports signal frequencies up to roughly 40 MHz."},{"question":"Is MAX9108ESD+ equivalent to LM339?","answer":"The LM339 is a quad comparator with open-collector outputs and a wider supply range (2 V to 36 V), while the MAX9108ESD+ has TTL push-pull outputs and a 4.5 V to 5.5 V supply. They are not pin-compatible or direct equivalents — the MAX9108ESD+ is faster (25 ns vs ~1.3 µs) but requires a 5 V rail."},{"question":"What is the difference between MAX9108ESD+ and MAX9109?","answer":"The MAX9109 is a single comparator in a 5-pin SOT-23 package, while the MAX9108ESD+ is a quad comparator in a 14-SOIC. The single version saves board space for one channel; the quad packs four channels in one package for multi-threshold designs."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/MAX9108ESD","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/MAX9108ESD 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}}