{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SN75477P","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"SN75477P","canonicalUrl":"https://icboms.com/texas-instruments/SN75477P","factsUrl":"https://icboms.com/api/mcp/products/SN75477P","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments SN75477P peripheral driver, 2-element, 300mA output, 4.5V-5.5V supply, 8-DIP (0.300\", 7.62mm) through-hole package.","salesMarkdown":"## Peripheral driver for relay and solenoid loads The SN75477P: Each of the two elements handles one bit of drive, making it a straightforward fit for driving relays, solenoids, or indicator lamps from a 5 V logic bus without an external transistor stage. ## Active lifecycle and through-hole board fit Listed as Active by Texas Instruments with RoHS3 compliance (ROHS3 Compliant), the SN75477P remains a current-production part suitable for new designs. The 8-DIP (0.300\", 7.62mm) through-hole package mates with standard 0.100-inch pitch sockets or solder-in holes — no board respin needed if the existing layout already carries a DIP-8 footprint. Sourced to order through independent distribution; availability and current pricing confirmed at RFQ. ## 300 mA sink drive — what it means on the bench The 300 mA per-channel sink rating (Current - Output High, Low: -, 300mA) is the continuous DC limit at the output low state. Driving a 24 V relay coil through this driver requires an external flyback diode across the load — the internal structure does not include a catch diode, so the inductive kickback during turn-off will exceed the absolute maximum voltage rating without one.","metaTitle":"SN75477P Peripheral Driver, 300mA, 8-DIP, Texas Instruments","metaDescription":"Texas Instruments SN75477P peripheral driver, 2 elements, 300mA output, 4.5V-5.5V supply, 8-DIP through-hole package. Active lifecycle, RoHS3 compliant.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"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":"$1.06","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.06000","currency":"USD"},{"qty":10,"price":"$0.95100","currency":"USD"},{"qty":25,"price":"$0.90240","currency":"USD"},{"qty":100,"price":"$0.74120","currency":"USD"},{"qty":250,"price":"$0.69280","currency":"USD"},{"qty":500,"price":"$0.61226","currency":"USD"},{"qty":1000,"price":"$0.48336","currency":"USD"},{"qty":2500,"price":"$0.45600","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/66711629cc8deea3422b30b7c9ecbd28.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest functional second-source to SN75477P — SN74LS645-1N?","answer":"The SN74LS645-1N is a different device class — an octal transceiver with 3-state outputs, not a peripheral driver. It cannot drop into the same socket without rewiring; the pinout, logic function, and output structure are incompatible."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/SN75477P","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/SN75477P when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}