{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MCP6542T-E/SN","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"MCP6542T-E-SN","canonicalUrl":"https://icboms.com/microchip/MCP6542T-E-SN","factsUrl":"https://icboms.com/api/mcp/products/MCP6542T-E%2FSN","rawCanonicalId":null},"summary":{"shortDescription":"Microchip MCP6542T-E/SN, General Purpose comparator, 2 elements, CMOS/Push-Pull/Rail-to-Rail/TTL output, 8 µs propagation delay, 1 µA quiescent current, 1.6 V to 5.5 V supply, -40°C to 125°C, 8-SOIC package.","salesMarkdown":"The Microchip MCP6542T-E/SN is a dual general-purpose comparator in an 8-SOIC package, built for applications where the supply rail can't be pinned to a tight tolerance. It runs from 1.6 V to 5.5 V single supply (or dual supplies if you need a split rail), so it fits into 1.8 V logic systems, 3.3 V sensor interfaces, and 5 V industrial control boards without a separate regulator. The 8 µs propagation delay (max) puts it in the slow-but-predictable category — fine for threshold detection, overvoltage/undervoltage lockout, and window comparators, but not for high-speed PWM feedback or zero-crossing at switching frequencies above a few tens of kilohertz. The headline number is the 1 µA maximum quiescent current per channel. That is the reason to pick this part over a standard LM393 (which pulls about 400 µA per comparator). The trade-off is speed: the LM393 propagates in about 1.3 µs, while the MCP6542 takes 8 µs. If your signal edges are slow (millisecond-scale sensor outputs, RC time constants), the 8 µs delay is invisible. ## Output type and input characteristics — no surprises on the board The output stage is CMOS push-pull with rail-to-rail swing, and it is also TTL-compatible. That means you can drive a logic gate input directly without a pull-up resistor. The push-pull output also handles capacitive loads better than an open-drain stage — useful when the comparator feeds a long PCB trace or a microcontroller input with a few picofarads of pin capacitance. Input bias current is 1 pA typical at 5.5 V, which is essentially zero for most divider networks. The input offset voltage is 7 mV max at 5.5 V — not a precision comparator, but fine for threshold detection where the hysteresis (6.5 mV internal) dominates the switching accuracy. The 70 dB CMRR and 80 dB PSRR are respectable for a general-purpose part; you will not see the threshold shift more than a millivolt or two across the supply range. ## Temperature range and environment — field-service perspective No exposed pad, so no thermal-via stencil needed — just the usual 100 nF decoupling cap close to the supply pin. Microchip lists the MCP6542T-E/SN as Active product status.","metaTitle":"MCP6542T-E/SN Dual General-Purpose Comparator, 8 µs","metaDescription":"Microchip MCP6542T-E/SN dual comparator: 8 µs propagation delay, 1 µA quiescent current, 1.6 V to 5.5 V supply, -40°C to 125°C, 8-SOIC. Active, ROHS3 compliant.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Type":"General Purpose","Package":"Tape & Reel (TR); Cut Tape (CT)","Hysteresis":"6.5mV","Output Type":"CMOS, Push-Pull, Rail-to-Rail, TTL","Mounting Type":"Surface Mount","Package / Case":"8-SOIC (0.154\\\", 3.90mm Width)","lifecycle_stage":"eol_hot","CMRR, PSRR (Typ)":"70dB CMRR, 80dB PSRR","Number of Elements":"2","Operating Temperature":"-40°C ~ 125°C","Propagation Delay (Max)":"8µs","Supplier Device Package":"8-SOIC","Current - Quiescent (Max)":"1µA","Current - Input Bias (Max)":"1pA @ 5.5V","Voltage - Input Offset (Max)":"7mV @ 5.5V","Voltage - Supply, Single/Dual (±)":"1.6V ~ 5.5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.74","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.74000","currency":"USD"},{"qty":25,"price":"$0.62560","currency":"USD"},{"qty":100,"price":"$0.58500","currency":"USD"},{"qty":3300,"price":"$0.58500","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/8a68bc0bfb9f3cb2fb05a69d97326187.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the propagation delay and supply voltage range of MCP6542?","answer":"The maximum propagation delay is 8 µs, and the supply voltage range is 1.6 V to 5.5 V single supply (or dual supplies). This makes it a slow comparator suited for DC threshold detection and low-frequency signal conditioning, not high-speed switching."},{"question":"When sourcing MCP6542T-E/SN, what is the closest functional alternative?","answer":"The MCP6567-E/MS is a similar dual comparator from Microchip in an 8-MSOP package, with 80 ns propagation delay (much faster), 1.8 V minimum supply, and open-drain output instead of push-pull. The MCP6542 is the ultra-low-power choice (1 µA vs 100 µA for the MCP6567), while the MCP6567 is the high-speed choice. They are not pin-compatible (different package), so a board layout change is needed."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/MCP6542T-E-SN","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/MCP6542T-E-SN 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}}