{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"24FC64FT-I/OT","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"24FC64FT-I-OT","canonicalUrl":"https://icboms.com/microchip/24FC64FT-I-OT","factsUrl":"https://icboms.com/api/mcp/products/24FC64FT-I%2FOT","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology 24FC64FT-I/OT serial EEPROM, 64Kbit, I²C interface, 1 MHz, 1.7V-5.5V, SOT-23-5, -40°C to 85°C.","salesMarkdown":"## 64Kbit I²C EEPROM in a 5-pin SOT-23 footprint The 24FC64FT-I/OT is a 64Kbit serial EEPROM organized as 8K x 8, communicating over an I²C bus at up to 1 MHz. The SOT-23-5 package (SC-74A) takes up minimal board area — the five pins cover SDA, SCL, WP, Vcc, and Vss, with no address lines exposed (the I²C address is hardwired). This is a part for designs that need non-volatile parameter storage, calibration data, or firmware-update staging in a small footprint. ## Supply voltage and temperature grade — the real fit constraints The 1 MHz clock frequency is the fast-mode-plus ceiling for I²C. At 400 kHz standard mode, the bus pulls about 2.5 µA standby; at 1 MHz the active current rises but the part still idles below 5 µA. The 400 ns access time is the read-access window from the last clock edge to data valid — this is fast enough for any I²C master, but the real throughput bottleneck is the 5 ms page-write cycle time. A 64-byte page write takes 5 ms; writing the full 64Kbit in 8-byte chunks would take over 5 seconds.","metaTitle":"Microchip 24FC64FT-I/OT EEPROM, 64Kbit I²C, SOT-23-5","metaDescription":"Microchip 24FC64FT-I/OT 64Kbit I²C EEPROM in SOT-23-5. 1 MHz clock, 1.7V-5.5V supply, -40°C to 85°C. Active, ROHS3. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Package":"Tape & Reel (TR); Cut Tape (CT)","Technology":"EEPROM","Access Time":"400 ns","Memory Size":"64Kbit","Memory Type":"Non-Volatile","Memory Format":"EEPROM","Mounting Type":"Surface Mount","Package / Case":"SC-74A, SOT-753","Clock Frequency":"1 MHz","lifecycle_stage":"eol_hot","Memory Interface":"I²C","Voltage - Supply":"1.7V ~ 5.5V","Memory Organization":"8K x 8","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"SOT-23-5","Write Cycle Time - Word, Page":"5ms"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.49","stockQuantity":26,"priceTiers":[{"qty":1,"price":"$0.49000","currency":"USD"},{"qty":25,"price":"$0.48000","currency":"USD"},{"qty":3000,"price":"$0.48000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/59bfad2537ed2eb2c70870ba05a8f9d9.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest functional second-source for 24FC64FT-I/OT — 24AA128T-I/SN?","answer":"The 24AA128T-I/SN is a 128Kbit I²C EEPROM from Microchip, but it is not a pin-compatible drop-in for the 24FC64FT-I/OT. The 24AA128T-I/SN comes in an SOIC-8 package (vs SOT-23-5), runs at 400 kHz max (vs 1 MHz), and has a 900 ns access time (vs 400 ns). For a 64Kbit I²C EEPROM in SOT-23-5, the 24FC64FT-I/OT is the current active part — no direct second-source exists in the same package and speed grade."},{"question":"Will 24FC64FT-I/OT drop into a board designed for 24AA128T-I/SN without rewiring?","answer":"No. The 24AA128T-I/SN is an 8-pin SOIC; the 24FC64FT-I/OT is a 5-pin SOT-23. The pinout and footprint are completely different. The 24FC64FT-I/OT also lacks the three address-select pins that the 24AA128T-I/SN has, so the I²C address is fixed. A board spin is required."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/24FC64FT-I-OT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/24FC64FT-I-OT when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:45:10.375Z","lastPublished":"2026-07-22T19:45:10.375Z","indexable":true}}