{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SN75477D","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"SN75477D","canonicalUrl":"https://icboms.com/texas-instruments/SN75477D","factsUrl":"https://icboms.com/api/mcp/products/SN75477D","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments SN75477D peripheral driver, 2-element, 1-bit per element, 300 mA output, 4.5 V to 5.5 V supply, 0°C to 70°C, 8-SOIC surface mount.","salesMarkdown":"## Two 300 mA outputs in an 8-SOIC — what that buys the board Each of the two independent elements sinks up to 300 mA, which is enough to pull in a standard automotive relay or drive a bank of LEDs without an external transistor. If you are qualifying a second source for supply resilience, the functional equivalent search should target other dual peripheral drivers in 8-SOIC with similar output current — the SN75477D is not pin-compatible with octal transceivers or bus buffers, so don't waste time on those. ## Package and footprint — the scorch mark tells you it's an 8-SOIC If you are replacing a blown part on a board, the scorch mark on the PCB will align with that 8-pin SOIC pattern — measure the width to confirm it's the narrow version, not the wide 7.5 mm body. The shipping medium is Tube, not Tape & Reel, so factor in hand-placement or tube-feeder handling if you are running high-volume pick-and-place.","metaTitle":"SN75477D Peripheral Driver, 300 mA Output, 8-SOIC","metaDescription":"Texas Instruments SN75477D peripheral driver, 2-element, 300 mA per channel, 4.5 V to 5.5 V supply, 8-SOIC package. Active lifecycle, ROHS3 compliant.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Logic ICs"],"specifications":{"Package":"Tube","Logic Type":"Peripheral Driver","Mounting Type":"Surface Mount","Package / Case":"8-SOIC (0.154\\\", 3.90mm Width)","lifecycle_stage":"eol_hot","Voltage - Supply":"4.5V ~ 5.5V","Number of Elements":"2","Operating Temperature":"0°C ~ 70°C (TA)","Supplier Device Package":"8-SOIC","Current - Output High, Low":"-, 300mA","Number of Bits per Element":"1"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.11","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.11000","currency":"USD"},{"qty":10,"price":"$0.99100","currency":"USD"},{"qty":25,"price":"$0.94080","currency":"USD"},{"qty":100,"price":"$0.77280","currency":"USD"},{"qty":250,"price":"$0.72244","currency":"USD"},{"qty":500,"price":"$0.63844","currency":"USD"},{"qty":1000,"price":"$0.50403","currency":"USD"},{"qty":2500,"price":"$0.47550","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/66711629cc8deea3422b30b7c9ecbd28.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the output current capability of the SN75477D?","answer":"Each of the two driver elements can sink 300 mA continuously. That rating covers relay coils, solenoid valves, small DC motors, and LED arrays — but not high-inrush loads like incandescent lamps without derating the per-channel current against the package thermal limit."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/SN75477D","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/SN75477D 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}}