{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"71V3557S85PFGI","brand":"Renesas Electronics","brandSlug":"renesas","productSlug":"71V3557S85PFGI","canonicalUrl":"https://icboms.com/renesas/71V3557S85PFGI","factsUrl":"https://icboms.com/api/mcp/products/71V3557S85PFGI","rawCanonicalId":null},"summary":{"shortDescription":"Renesas 71V3557S85PFGI synchronous SRAM, ZBT (Zero Bus Turnaround), 4.5Mbit (128K x 36), 8.5 ns access time, 3.3V supply, -40°C to 85°C, 100-TQFP (14x14), Bulk.","salesMarkdown":"## Synchronous ZBT SRAM for high-throughput data buffers The 71V3557S85PFGI is a 4.5 Mbit synchronous SRAM organized as 128K x 36 bits, using Zero Bus Turnaround (ZBT) architecture to eliminate dead cycles between read and write operations on a shared data bus. With an 8.5 ns access time and a parallel interface, it sustains back-to-back transactions at bus speeds that older pipelined SRAMs cannot match — critical for network packet buffers, cache controllers, and DSP scratchpads where every clock cycle carries data. Supplied in Bulk (tray) — typical for prototype and low-to-mid volume production; for high-volume reels, check the alternate ordering code suffix.","metaTitle":"71V3557S85PFGI SRAM 4.5Mbit, 8.5 ns, 100-TQFP","metaDescription":"71V3557S85PFGI synchronous ZBT SRAM, 4.5Mbit (128K x 36), 8.5 ns access, 3.3V, -40 to 85°C, 100-TQFP. Active production, sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Memory (DRAM / SRAM / Flash / EEPROM)"],"specifications":{"Package":"Bulk","Technology":"SRAM - Synchronous, SDR (ZBT)","Access Time":"8.5 ns","Memory Size":"4.5Mbit","Memory Type":"Volatile","Memory Format":"SRAM","Mounting Type":"Surface Mount","Package / Case":"100-LQFP","lifecycle_stage":"eol_hot","Memory Interface":"Parallel","Voltage - Supply":"3.135V ~ 3.465V","Memory Organization":"128K x 36","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"100-TQFP (14x14)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$5.08","stockQuantity":23,"priceTiers":[{"qty":60,"price":"$5.08000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/acfbd9885306495b42a3952faca55bd5.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Where can I buy 71V3557S85PFGI and how do I get a price?","answer":"The 71V3557S85PFGI is an active-production part available through independent and authorized distribution. Submit an RFQ with your target quantity; pricing and lead time are confirmed at quote time."},{"question":"What is the memory organization of 71V3557S85PFGI?","answer":"The 71V3557S85PFGI is organized as 128K words by 36 bits, giving a total memory size of 4.5 Mbit. The 36-bit word width suits systems that need a parity or ECC bit per 32-bit data word."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/renesas/71V3557S85PFGI","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/renesas/71V3557S85PFGI when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:45:10.375Z","lastPublished":"2026-07-22T19:45:10.375Z","indexable":true}}