{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY7C1049B-15VC","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"CY7C1049B-15VC","canonicalUrl":"https://icboms.com/infineon/CY7C1049B-15VC","factsUrl":"https://icboms.com/api/mcp/products/CY7C1049B-15VC","rawCanonicalId":null},"summary":{"shortDescription":"Cypress CY7C1049B-15VC asynchronous SRAM, 4 Mbit density organized 512K x 8, 15 ns access time, 4.5–5.5 V supply, SOJ-36 surface-mount package, commercial 0–70°C temperature range.","salesMarkdown":"The CY7C1049B-15VC: It runs on a 4.5–5.5 V supply and comes in a 36-pin SOJ surface-mount package. This part is designed for commercial-temperature (0–70°C) environments. For a 5 V system running a 33 MHz bus (30 ns cycle), this gives about one clock cycle of margin for address decode, PCB trace delay, and setup time at the controller — tight but workable. Slower 20 ns or 25 ns parts would eat into that margin, potentially forcing a wait state or a slower clock. If your timing closure spreadsheet shows less than 2 ns slack on the address-to-data path, the 15 ns rating is what keeps the bus running at full speed without adding a wait state. ## Obsolete — the sourcing reality for CY7C1049B-15VC Every lot we source is date-code verified against the manufacturer's last production window to avoid post-EOL re-marked parts. ## Package and footprint: SOJ-36 The CY7C1049B-15VC is supplied in a 36-pin SOJ package, body width 0.400 inches (10.16 mm). This limits the part to indoor, temperature-controlled environments. ## Supply rail: 5 V only If your system uses 3.3 V logic, you would need level translators on the address, data, and control lines, which adds cost and board area. The 5 V requirement also affects power budgeting: at 15 ns access time, the dynamic current is higher than a comparable 3.3 V low-power SRAM. For a battery-powered or thermally constrained design, a 3.3 V part would be a better fit.","metaTitle":"Cypress CY7C1049B-15VC SRAM, 4 Mbit, 15 ns, SOJ-36","metaDescription":"Cypress CY7C1049B-15VC asynchronous SRAM, 4 Mbit (512K x 8), 15 ns access time, 4.5–5.5 V, SOJ-36, 0–70°C.","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":"Tube","Technology":"SRAM - Asynchronous","Access Time":"15 ns","Memory Size":"4Mbit","Memory Type":"Volatile","Memory Format":"SRAM","Mounting Type":"Surface Mount","Package / Case":"36-BSOJ (0.400\\\", 10.16mm Width)","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Memory Interface":"Parallel","Voltage - Supply":"4.5V ~ 5.5V","Base Product Number":"CY7C1049","Memory Organization":"512K x 8","Operating Temperature":"0°C~70°C(TA)","Supplier Device Package":"36-SOJ","Write Cycle Time - Word, Page":"15ns"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/91611bcbc601cc1b2eaba4ec6f4025e6.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is CY7C1049B-15VC obsolete?","answer":"Yes, the CY7C1049B-15VC is marked obsolete by Cypress. Supply is limited to surplus and broker-channel stock."},{"question":"What are the specifications of CY7C1049B-15VC?","answer":"It is a 4 Mbit asynchronous SRAM organized 512K x 8, with a 15 ns access time, parallel interface, 4.5–5.5 V supply, in a 36-pin SOJ package, rated for 0–70°C operation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/CY7C1049B-15VC","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/CY7C1049B-15VC 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}}