{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY7C1355B-100AC","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"CY7C1355B-100AC","canonicalUrl":"https://icboms.com/infineon/CY7C1355B-100AC","factsUrl":"https://icboms.com/api/mcp/products/CY7C1355B-100AC","rawCanonicalId":null},"summary":{"shortDescription":"Cypress CY7C1355B-100AC, 9Mbit Synchronous SRAM, 256K x 36, 100 MHz clock, 7.5 ns access time, Parallel interface, 3.135V–3.6V supply, 0°C–70°C, 100-TQFP (14x20).","salesMarkdown":"## 9Mbit synchronous SRAM — 100 MHz, 7.5 ns access, 256K x 36 The Cypress CY7C1355B-100AC is a 9Mbit synchronous SRAM organized as 256K x 36, clocked at 100 MHz with a 7.5 ns access time. It uses a parallel interface and runs from a 3.135V to 3.6V supply. ## 7.5 ns access at 100 MHz — bus timing margin In a synchronous system the controller must meet the setup and hold windows relative to this access window. The 100 MHz clock frequency ties the SRAM to the system PLL — if the replacement part runs slower (e.g., 83 MHz), the bus timing budget shrinks and may force a clock divider or a board spin. The 256K x 36 organization means the part handles 36-bit-wide data words in a single cycle, which suits 32-bit plus parity or 36-bit-wide memory buses common in network processors and FPGA-attached caches. It is not specified for industrial enclosures, outdoor cabinets, or under-hood automotive use. If the replacement design needs -40°C to +85°C, look at the industrial-temperature variants in the same Cypress synchronous SRAM family (e.g., CY7C1355B-100AI) — but verify pin-compatibility separately; the suffix change often means a different ordering code, not a guaranteed drop-in.","metaTitle":"CY7C1355B-100AC Cypress 9Mbit SRAM, 100 MHz, 7.5 ns","metaDescription":"CY7C1355B-100AC Cypress 9Mbit synchronous SRAM, 256K x 36, 100 MHz clock, 7.5 ns access, 100-TQFP. Quoted on request.","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":"Bag","Technology":"SRAM - Synchronous, SDR","Access Time":"7.5 ns","Memory Size":"9Mbit","Memory Type":"Volatile","Memory Format":"SRAM","Mounting Type":"Surface Mount","Package / Case":"100-LQFP","Product Status":"Obsolete","Clock Frequency":"100 MHz","lifecycle_stage":"eol_hot","Memory Interface":"Parallel","Voltage - Supply":"3.135V ~ 3.6V","Base Product Number":"CY7C1355","Memory Organization":"256K x 36","Operating Temperature":"0°C ~ 70°C (TA)","Supplier Device Package":"100-TQFP (14x20)","Write Cycle Time - Word, Page":"-"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/83297c75016f31cf91d38f80fc90b9b9.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is CY7C1355B-100AC obsolete?","answer":"Yes, Cypress has listed the CY7C1355B-100AC as obsolete."},{"question":"What is the replacement for CY7C1355B-100AC?","answer":"A pin-compatible alternative would need the same 100-TQFP (14x20) footprint, 100 MHz clock, 7.5 ns access, and 256K x 36 organization. Check the active CY7C1355B family siblings (e.g., CY7C1355B-100AI for industrial temp) — but verify the exact suffix and temperature grade against your BOM requirements before ordering."},{"question":"Can CY7C1355B-100AC be used with a 3.3V supply?","answer":"Yes. The supply range is 3.135V to 3.6V, so a nominal 3.3V rail is within spec. The 3.3V supply is the standard for this synchronous SRAM family — no level shifting is needed on the I/O if the controller also runs at 3.3V."},{"question":"What is the access time of CY7C1355B-100AC?","answer":"The access time is 7.5 ns at the rated 100 MHz clock frequency."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/CY7C1355B-100AC","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/CY7C1355B-100AC 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}}