{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"AT45DQ161-SHF-T","brand":"Renesas Electronics","brandSlug":"renesas","productSlug":"AT45DQ161-SHF-T","canonicalUrl":"https://icboms.com/renesas/AT45DQ161-SHF-T","factsUrl":"https://icboms.com/api/mcp/products/AT45DQ161-SHF-T","rawCanonicalId":null},"summary":{"shortDescription":"Microchip/Adesto AT45DQ161-SHF-T, 16Mbit Serial Flash, SPI/Quad I/O, 85 MHz, 2.3V-3.6V, 8-SOIC, -40°C to 105°C, Tape & Reel.","salesMarkdown":"## 16 Mbit SPI flash with Quad I/O — what it is and where it fits The AT45DQ161-SHF-T is a 16 Mbit serial flash memory from Microchip Technology (formerly Adesto) built on a non-volatile FLASH process. It communicates over an SPI bus with Quad I/O support, meaning the same four data lines used for address and command can also deliver data at four bits per clock cycle — a real throughput advantage over basic SPI when the controller supports it. The memory is organized as 4096 pages of 528 bytes each, which maps well to code shadowing, data logging, or configuration storage in embedded systems. It operates from a 2.3 V to 3.6 V supply and is rated over the industrial temperature range of -40°C to 105°C, so it can sit on a motor-drive control board or an outdoor telecom module without thermal concern. ## Package and mounting — 8-SOIC wide-body The part comes in an 8-pin SOIC wide-body package (0.209-inch body width, 5.30 mm), surface-mount only. The wide-body SOIC is a common footprint shared with many serial EEPROMs and flash parts. ## Lifecycle and compliance — active, no obsolescence risk It is ROHS3 compliant, so it meets the current EU restriction requirements without an exemption. For a BOM line that needs a reliable serial flash for the next several years, this part is a safe selection — no last-time-buy scramble, no substitute qualification required.","metaTitle":"AT45DQ161-SHF-T 16Mbit SPI Quad I/O Flash, 85 MHz, 8-SOIC","metaDescription":"16Mbit SPI Quad I/O Flash from Adesto/Microchip. 85 MHz clock, 2.3V-3.6V supply, -40°C to 105°C. Active, ROHS3.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["DC-DC Power Modules"],"specifications":{"Package":"Tape & Reel (TR); Cut Tape (CT)","Technology":"FLASH","Memory Size":"16Mbit","Memory Type":"Non-Volatile","Memory Format":"FLASH","Mounting Type":"Surface Mount","Package / Case":"8-SOIC (0.209\\\", 5.30mm Width)","Clock Frequency":"85 MHz","lifecycle_stage":"eol_hot","Memory Interface":"SPI - Quad I/O","Voltage - Supply":"2.3V ~ 3.6V","Memory Organization":"528 Bytes x 4096 pages","Operating Temperature":"-40°C ~ 105°C (TC)","Supplier Device Package":"8-SOIC","Write Cycle Time - Word, Page":"8µs, 6ms"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.77","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$2.77000","currency":"USD"},{"qty":10,"price":"$2.49500","currency":"USD"},{"qty":25,"price":"$2.45640","currency":"USD"},{"qty":50,"price":"$2.45000","currency":"USD"},{"qty":100,"price":"$2.18920","currency":"USD"},{"qty":250,"price":"$2.11720","currency":"USD"},{"qty":500,"price":"$2.10952","currency":"USD"},{"qty":1000,"price":"$1.96434","currency":"USD"},{"qty":2000,"price":"$1.93222","currency":"USD"},{"qty":4000,"price":"$1.83715","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/018e1017e1dbc38a37a03bcc643868d7.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the maximum clock frequency for AT45DQ161-SHF-T?","answer":"The SPI clock frequency is rated at 85 MHz. In Quad I/O mode, this yields an effective data rate of 340 Mbps."},{"question":"Is AT45DQ161-SHF-T compatible with 3.3V logic?","answer":"Yes, the supply voltage range of 2.3 V to 3.6 V covers 3.3 V operation directly. The SPI and Quad I/O signal levels track the supply rail, so a 3.3 V host controller interfaces without level shifters."},{"question":"What are alternatives to AT45DQ161-SHF-T?","answer":"The closest functional peer is the AT45DQ161-SHF2B-T, which shares the same 16 Mbit density, 85 MHz clock, Quad I/O interface, and 8-SOIC package. The -SHF2B variant is a direct second-source candidate for dual-sourcing. The AT45DQ161-SSHF-T is identical except for the temperature range: -40°C to 85°C instead of -40°C to 105°C. The AT45DB161E-SSHFHA-T uses standard SPI (no Quad I/O) and has a faster page program time of 4 ms, but operates only to 85°C."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/renesas/AT45DQ161-SHF-T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/renesas/AT45DQ161-SHF-T 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}}