{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY7C1021B-15ZXIT","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"CY7C1021B-15ZXIT","canonicalUrl":"https://icboms.com/infineon/CY7C1021B-15ZXIT","factsUrl":"https://icboms.com/api/mcp/products/CY7C1021B-15ZXIT","rawCanonicalId":null},"summary":{"shortDescription":"Infineon CY7C1021B-15ZXIT, 1Mbit asynchronous SRAM organized 64K x 16, 15 ns access time, 4.5V–5.5V supply, -40°C to 85°C industrial temperature, 44-TSOP II package, Tape & Reel.","salesMarkdown":"## 15 ns async SRAM in a 16-bit bus slot The CY7C1021B-15ZXIT is a 1Mbit asynchronous SRAM from Infineon, organized 64K x 16 — a straight fit for legacy 16-bit data buses where the address and data lines map without byte-lane muxing. The 15 ns access time sets the read-cycle floor: at 5 V nominal, the chip delivers a 66 MHz equivalent random-access rate on paper, but the real ceiling is the bus turn-around and the controller's tRC. In a typical 16-bit DSP or network processor glue, this part keeps the wait-state count at zero down to about 40 ns cycle time before the memory becomes the bottleneck. ## Industrial temperature and 5 V supply The 4.5V–5.5V supply window matches legacy 5 V logic families — no level translation on the address/data bus when paired with a 5 V-tolerant FPGA or ASIC. Infineon lists the CY7C1021B-15ZXIT as Obsolete. Sourcing is limited to broker-held inventory — date codes vary, and reel quantities may be partial. Every unit is screened for counterfeit risk before commitment. ## 44-TSOP II footprint and Tape & Reel delivery Housed in a 44-TSOP II (0.400-inch body width, 10.16 mm), the package is a standard JEDEC outline for 16-bit SRAMs — the footprint matches legacy Cypress and ISSI parts in the same family. Supplied on Tape & Reel (TR), suited for automated pick-and-place.","metaTitle":"CY7C1021B-15ZXIT 1Mbit Async SRAM 15 ns TSOP II by Infineon","metaDescription":"CY7C1021B-15ZXIT 1Mbit (64K x 16) asynchronous SRAM, 15 ns access, 4.5V–5.5V, -40°C to 85°C, 44-TSOP II. Obsolete — sourced per RFQ from broker inventory.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Memory (DRAM / SRAM / Flash / EEPROM)"],"specifications":{"Mfr":"Infineon Technologies","Series":"-","Package":"Tape & Reel (TR)","Technology":"SRAM - Asynchronous","Access Time":"15 ns","Memory Size":"1Mbit","Memory Type":"Volatile","Memory Format":"SRAM","Mounting Type":"Surface Mount","Package / Case":"44-TSOP (0.400\\\", 10.16mm Width)","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Memory Interface":"Parallel","Voltage - Supply":"4.5V ~ 5.5V","Base Product Number":"CY7C1021","Memory Organization":"64K x 16","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"44-TSOP II","Write Cycle Time - Word, Page":"15ns"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/82c7b961e3b5b1ab441dd2f6a6002ed8.pdf","sourceUrl":null},"ai":{"faq":[{"question":"How can I order CY7C1021B-15ZXIT or check availability?","answer":"This part is Obsolete per Infineon. No factory stock or lead time applies. We source it from broker and excess inventory — confirm the date code and reel quantity at quote time. Submit an RFQ with your BOM quantity; we'll pull the best available lot and quote per order."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/CY7C1021B-15ZXIT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/CY7C1021B-15ZXIT 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}}