{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"93AA46B-I/SN","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"93AA46B-I-SN","canonicalUrl":"https://icboms.com/microchip/93AA46B-I-SN","factsUrl":"https://icboms.com/api/mcp/products/93AA46B-I%2FSN","rawCanonicalId":null},"summary":{"shortDescription":"Microchip 93AA46B-I/SN serial EEPROM, 1Kbit (64 x 16), Microwire interface, 2 MHz clock, 1.8V to 5.5V supply, -40°C to 85°C, 8-SOIC package, Tube.","salesMarkdown":"## 1Kbit Microwire EEPROM — configuration memory for industrial and battery-powered designs The Microchip 93AA46B-I/SN is a 1Kbit serial EEPROM organized as 64 x 16 bits, accessed through a Microwire interface. The 2 MHz clock frequency supports moderate-speed read and write operations, while the 6 ms write cycle time per word or page is typical for this density class. ## Supply voltage and temperature — what the range means for your BOM The 1.8V to 5.5V supply range covers both low-voltage battery operation (down to 1.8V) and legacy 5V logic rails without a level shifter. If your design needs extended temperature above 85°C or below -40°C, this part is not rated for it. ## Microwire interface — bus timing and write cycle The Microwire interface uses a dedicated clock (SK), data input (DI), and data output (DO) line, plus a chip-select (CS). At 2 MHz, each bit transfers in 500 ns, so a full 16-bit word read takes about 8 µs plus access overhead. The 6 ms write cycle time is the period during which the EEPROM internally programs the memory array; the host must wait for the READY/BUSY status (polled via CS) before starting the next operation. This is typical for serial EEPROMs of this generation and is not a fast-page-write device. ## Package and delivery — 8-SOIC in Tube The Tube delivery form is standard for low-to-medium volume production and hand-assembly; if your line uses tape-and-reel feeders, order the -I/ST variant (TSSOP) or check for a reel option under a different ordering code. The package is ROHS3 compliant with no exemptions. ## Lifecycle and sourcing posture The part is ROHS3 compliant. No official successor or second-source alternate is recorded in the manufacturer's cross-reference, but the 93LC46A-I/ST (same density, 2.5V minimum supply, TSSOP-8 package) is a functional peer for designs that can tolerate the higher Vcc floor and different footprint.","metaTitle":"Microchip 93AA46B-I/SN 1Kbit Microwire EEPROM, 2 MHz, 8-SOIC","metaDescription":"Microchip 93AA46B-I/SN 1Kbit serial EEPROM with Microwire interface, 2 MHz clock, 1.8V-5.5V supply, -40°C to 85°C. Active, ROHS3 compliant.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Signal Isolation"],"specifications":{"Package":"Tube","Technology":"EEPROM","Memory Size":"1Kbit","Memory Type":"Non-Volatile","Memory Format":"EEPROM","Mounting Type":"Surface Mount","Package / Case":"8-SOIC (0.154\\\", 3.90mm Width)","Clock Frequency":"2 MHz","lifecycle_stage":"eol_hot","Memory Interface":"Microwire","Voltage - Supply":"1.8V ~ 5.5V","Memory Organization":"64 x 16","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"8-SOIC","Write Cycle Time - Word, Page":"6ms"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.3","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.30000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/edb2729a23f5052bf94e3ddccd36505e.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is 93AA46B-I/SN compatible with 93LC46?","answer":"The 93LC46A-I/ST is a functional peer with the same 1Kbit density and Microwire interface, but it has a minimum supply voltage of 2.5V (vs. 1.8V for the 93AA46B) and comes in a TSSOP-8 package (vs. SOIC-8). They are not pin-compatible due to the different package, and the supply voltage difference may affect low-voltage designs."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/93AA46B-I-SN","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/93AA46B-I-SN when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T10:39:33.080Z","lastPublished":"2026-07-16T10:39:33.080Z","indexable":true}}