{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ISO7240CFDW","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"ISO7240CFDW","canonicalUrl":"https://icboms.com/texas-instruments/ISO7240CFDW","factsUrl":"https://icboms.com/api/mcp/products/ISO7240CFDW","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments ISO7240CFDW, General Purpose digital isolator, Capacitive Coupling, 4-channel unidirectional, 25Mbps data rate, 2500Vrms isolation, 42ns max propagation delay, 3.15V~5.5V supply, -40°C~125°C, 16-SOIC package.","salesMarkdown":"## 25 Mbps capacitive-coupled isolator with 42 ns propagation delay The Texas Instruments ISO7240CFDW is a 4-channel, unidirectional digital isolator using capacitive coupling technology, rated for 2500 Vrms isolation and a 25 Mbps data rate. Maximum propagation delay is 42 ns in both directions, with 2.5 ns pulse-width distortion and 2 ns typical rise/fall times. The part comes in a 16-pin SOIC wide-body (7.50 mm width) package, surface-mount only. ## What the 42 ns propagation delay means for bus timing At 25 Mbps the bit period is 40 ns, so a 42 ns propagation delay leaves essentially zero timing margin for a single-ended round-trip. This part is sized for unidirectional data paths — SPI clock and MOSI from controller to peripheral, for instance — where the total loop delay (driver + isolator + receiver) must close within one clock cycle. The 2.5 ns pulse-width distortion keeps duty-cycle skew tight enough for most synchronous interfaces at this speed. For bidirectional buses like I²C you'd need a different channel configuration. ## 25 kV/µs CMTI — why it matters for motor drives and inverters The minimum common-mode transient immunity of 25 kV/µs means this isolator can reject fast voltage transients across the isolation barrier that would otherwise corrupt data. In a motor-drive or inverter application where the switching node slews at 10–20 kV/µs, that margin keeps the output from glitching. The capacitive coupling technology inherently handles these edges better than optocouplers at this speed, which is the main reason to pick this part over an older opto-based isolator for a 25 Mbps industrial link. It is a current-production Texas Instruments part, suitable for both new design-ins and ongoing production. The base product number ISO7240 covers a family of speed and channel-configuration variants, so if a future revision needs a different data rate or directionality, the footprint stays the same across the family.","metaTitle":"TI ISO7240CFDW Digital Isolator, 25Mbps, 2500Vrms, 16-SOIC","metaDescription":"Texas Instruments ISO7240CFDW general-purpose digital isolator: 25Mbps data rate, 2500Vrms isolation, 42ns propagation delay, -40°C to 125°C. Active lifecycle.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Digital Isolators"],"specifications":{"Mfr":"Texas Instruments","Type":"General Purpose","Series":"-","Package":"Tube","Data Rate":"25Mbps","Technology":"Capacitive Coupling","Channel Type":"Unidirectional","Mounting Type":"Surface Mount","Isolated Power":"No","Package / Case":"16-SOIC (0.295\\\", 7.50mm Width)","Product Status":"Active","lifecycle_stage":"eol_hot","Voltage - Supply":"3.15V ~ 5.5V","Number of Channels":"4","Base Product Number":"ISO7240","Voltage - Isolation":"2500Vrms","Operating Temperature":"-40°C~125°C","Inputs - Side 1/Side 2":"4/0","Rise / Fall Time (Typ)":"2ns, 2ns","Supplier Device Package":"16-SOIC","Pulse Width Distortion (Max)":"2.5ns","Propagation Delay tpLH / tpHL (Max)":"42ns, 42ns","Common Mode Transient Immunity (Min)":"25kV/µs"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$7.0200","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/ec48dd4d2a144297fc20727889bc3e0c.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to ISO7240CFDW?","answer":"Within the ISO7240 family, the ISO7240C (25 Mbps, same pinout) and ISO7240M (150 Mbps, same pinout) are drop-in alternatives differing only in data rate. The base product number ISO7240 shares the same 16-SOIC footprint and supply range across all speed grades, so swapping requires no board change."},{"question":"Can ISO7240CFDW replace ISO7240?","answer":"The ISO7240CFDW is a specific variant of the ISO7240 base product number. The 'CFDW' suffix denotes the 25 Mbps speed grade in the wide-body SOIC-16 package. It is pin-compatible with other ISO7240 variants — the base number ISO7240 covers the entire family, so yes, it is a direct replacement for any other ISO7240 variant with the same package code."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/ISO7240CFDW","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/ISO7240CFDW 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}}