{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SN75478P","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"SN75478P","canonicalUrl":"https://icboms.com/texas-instruments/SN75478P","factsUrl":"https://icboms.com/api/mcp/products/SN75478P","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments SN75478P peripheral driver, 2 elements, 1 bit per element, 300 mA sink output, 4.5 V to 5.5 V supply, 0°C to 70°C, 8-DIP through-hole.","salesMarkdown":"## Package and mounting The SN75478P is a dual-channel peripheral driver from Texas Instruments, built to take a 5 V logic-level input and switch up to 300 mA per output into a grounded load — relay coils, small solenoids, incandescent indicators, or LED arrays. It lives in an 8-pin DIP (0.300\" body, 7.62 mm row spacing) that fits standard through-hole layouts, so it shows up on older industrial control boards, vending machine controllers, and appliance PCBs where a technician is more likely to reach for a desoldering iron than a hot-air station. ## Active lifecycle — no last-time-buy scramble No LTB notice, no end-of-life clock ticking. That matters when you're qualifying a BOM for a five-year production run or stocking spares for a fielded system — you're not forced into a broker buy or a last-minute redesign. ## Temperature grade and typical repair context That covers office equipment, indoor appliances, and most industrial control cabinets that aren't sitting in direct sunlight or next to a furnace. If the board lives under the hood or in a freezer, this isn't the part — you'd be looking at the industrial or automotive-grade siblings in the same family.","metaTitle":"SN75478P Peripheral Driver, 300 mA Sink, 8-DIP","metaDescription":"Texas Instruments SN75478P peripheral driver, 2-channel, 300 mA sink per output, 4.5 V to 5.5 V supply, 8-DIP through-hole.","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":"Through Hole","Package / Case":"8-DIP (0.300\\\", 7.62mm)","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-PDIP","Current - Output High, Low":"-, 300mA","Number of Bits per Element":"1"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.4","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.40000","currency":"USD"},{"qty":10,"price":"$1.24800","currency":"USD"},{"qty":25,"price":"$1.18440","currency":"USD"},{"qty":100,"price":"$0.97280","currency":"USD"},{"qty":250,"price":"$0.90932","currency":"USD"},{"qty":500,"price":"$0.80358","currency":"USD"},{"qty":1000,"price":"$0.63441","currency":"USD"},{"qty":2500,"price":"$0.59850","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/66711629cc8deea3422b30b7c9ecbd28.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the output current of SN75478P?","answer":"The SN75478P can sink 300 mA per output on the low side (the high-side output is not specified, so treat it as an open-collector/open-drain style sink driver). That's enough for a small relay, a 24 V indicator lamp with a dropping resistor, or a string of LEDs."},{"question":"What are the equivalent parts for SN75478P?","answer":"There is no pin-compatible second source listed in the available records. The SN74LS645-1N is a different logic family (transceiver, not peripheral driver) and is not a direct functional swap. For a replacement, stick with the SN75478P or look at the broader SN7547x family from TI for similar sink drivers in the same package."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/SN75478P","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/SN75478P 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}}