{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TLP2391(E","brand":"Toshiba Semiconductor","brandSlug":"toshiba","productSlug":"TLP2391E","canonicalUrl":"https://icboms.com/toshiba/TLP2391E","factsUrl":"https://icboms.com/api/mcp/products/TLP2391(E","rawCanonicalId":null},"summary":{"shortDescription":"Toshiba TLP2391(E photocoupler, 1-channel, AC/DC input, push-pull totem-pole output, 10MBd, 3750Vrms isolation, 6-SOIC-5 lead, surface mount, tube, -40°C to 125°C.","salesMarkdown":"## What this photocoupler solves: AC-coupled isolation without extra rectification The Toshiba TLP2391(E is a single-channel photocoupler that accepts both AC and DC input signals, which means it can directly couple a mains-frequency or bipolar signal across the isolation barrier without an external diode bridge or level shifter. That AC/DC input capability is the feature that sets it apart from most 10MBd optocouplers, which only handle DC inputs. The push-pull, totem-pole output drives logic inputs directly — no pull-up resistor needed — and the 3750Vrms isolation rating covers reinforced insulation requirements for industrial motor drives, PLC I/O modules, and medical power supplies. The 10MBd data rate is fast enough for most fieldbus interfaces (RS-485, CAN) and general-purpose isolated serial links, though it trails the 15MBd of the TLP2361 family. ## 10MBd data rate — is it enough for your bus? At 10MBd, the TLP2391(E handles 10 Mbps serial data with a 100 ns max propagation delay and 3 ns rise/fall times. That is sufficient for isolated SPI at 10 MHz, RS-485 at 10 Mbps, and CAN at 1 Mbps with margin. If your design runs a faster serial protocol (e.g., 20 Mbps LVDS or 15 Mbps Profibus), the TLP2361(V4,E offers 15MBd with 80 ns propagation delay — but it only accepts DC input, so you lose the AC-coupling advantage. ## Common-mode transient immunity: 20 kV/µs keeps data clean in noisy environments The 20 kV/µs minimum common-mode transient immunity means the output does not glitch when a high-voltage transient jumps across the isolation barrier. This matters in motor drives where the inverter switching node swings several hundred volts in nanoseconds — a photocoupler with lower CMTI would toggle falsely, corrupting the feedback loop. The TLP2391(E's 20 kV/µs is on par with the TLP2361 family and sufficient for most industrial inverter and servo drive designs.","metaTitle":"TLP2391(E Photocoupler, 10MBd, 3750Vrms, 6-SOIC","metaDescription":"TLP2391(E AC/DC input photocoupler, 10MBd data rate, 3750Vrms isolation, push-pull output, -40°C to 125°C. Active, RoHS compliant.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"RoHS Compliant","productStatus":"Active","categoryPath":["Optoisolators"],"specifications":{"Package":"Tube","Data Rate":"10MBd","Input Type":"AC, DC","Output Type":"Push-Pull, Totem Pole","Mounting Type":"Surface Mount","Package / Case":"6-SOIC (0.179\\\", 4.55mm Width), 5 Leads","lifecycle_stage":"eol_hot","Voltage - Supply":"2.7V ~ 5.5V","Number of Channels":"1","Voltage - Isolation":"3750Vrms","Operating Temperature":"-40°C ~ 125°C","Inputs - Side 1/Side 2":"1/0","Rise / Fall Time (Typ)":"3ns, 3ns","Supplier Device Package":"6-SO, 5 Lead","Current - Output / Channel":"10 mA","Voltage - Forward (Vf) (Typ)":"1.55V","Current - DC Forward (If) (Max)":"10mA","Propagation Delay tpLH / tpHL (Max)":"100ns, 100ns","Common Mode Transient Immunity (Min)":"20kV/µs"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.28","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.28000","currency":"USD"},{"qty":10,"price":"$0.80800","currency":"USD"},{"qty":100,"price":"$0.59790","currency":"USD"},{"qty":500,"price":"$0.54944","currency":"USD"},{"qty":1000,"price":"$0.45248","currency":"USD"},{"qty":2000,"price":"$0.42986","currency":"USD"},{"qty":5000,"price":"$0.42016","currency":"USD"},{"qty":10000,"price":"$0.41046","currency":"USD"}]},"links":{"datasheetUrl":"https://toshiba.semicon-storage.com/info/TLP2391_datasheet_en_20200508.pdf?did=14484&prodName=TLP2391","sourceUrl":null},"ai":{"faq":[{"question":"Where can I buy TLP2391(E) and get a price?","answer":"The TLP2391(E is available to order through independent distribution. Submit an RFQ for current availability and pricing — both are confirmed at quote time. No stock or price figures are published here."},{"question":"What is the closest functional second-source for TLP2391(E)?","answer":"The TLP2361(V4,E is a close functional peer with the same package, output type, and 20 kV/µs CMTI, but it runs at 15MBd (faster) and accepts only DC input, not AC/DC. If you need AC/DC input, the TLP2761(TP,E also accepts AC/DC and offers 5000Vrms isolation, though it is in tape-and-reel. Neither is an exact pin-compatible replacement — verify the input type against your circuit before substituting."},{"question":"What is the TLP2391(E) datasheet?","answer":"The datasheet is available from the manufacturer or through distribution channels."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/toshiba/TLP2391E","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/toshiba/TLP2391E 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}}