{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"R1LP0408DSB-5SI#B0","brand":"Renesas Electronics","brandSlug":"renesas","productSlug":"R1LP0408DSB-5SIB0","canonicalUrl":"https://icboms.com/renesas/R1LP0408DSB-5SIB0","factsUrl":"https://icboms.com/api/mcp/products/R1LP0408DSB-5SI%23B0","rawCanonicalId":null},"summary":{"shortDescription":"R1LP0408DSB-5SI#B0, 4Mbit (512K x 8) Parallel SRAM, 55 ns access time, 4.5V–5.5V supply, -40°C to 85°C, 32-TSOP II surface-mount package.","salesMarkdown":"## 4 Mbit parallel SRAM for 5 V legacy and industrial designs The R1LP0408DSB-5SI#B0: 4 Mbit static RAM organized as 512 K x 8 bits, accessed through a parallel interface with a 55 ns access time. It operates from a single 4.5 V to 5.5 V supply rail and is specified over the industrial temperature range of -40°C to 85°C. The memory is volatile. It comes in a 32-TSOP II surface-mount package. ## Package and footprint note The package is a 32-TSOP II with a 0.400-inch (10.16 mm) body width. Verify your PCB land pattern before committing the layout. The part is surface-mount only. ## Lifecycle and sourcing posture No LTB risk to plan around. No official second-source alternate is listed in the record.","metaTitle":"R1LP0408DSB-5SI#B0 SRAM 4Mbit Parallel 55ns 32-TSOP II","metaDescription":"R1LP0408DSB-5SI#B0 is an active 4Mbit (512K x 8) parallel SRAM with 55 ns access time, 5V supply, industrial temp range.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"Not applicable","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Package":"Bulk","Technology":"SRAM","Access Time":"55 ns","Memory Size":"4Mbit","Memory Type":"Volatile","Memory Format":"SRAM","Mounting Type":"Surface Mount","Package / Case":"32-SOIC (0.400\\\", 10.16mm Width)","lifecycle_stage":"eol_hot","Memory Interface":"Parallel","Voltage - Supply":"4.5V ~ 5.5V","Memory Organization":"512K x 8","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"32-TSOP II","Write Cycle Time - Word, Page":"55ns"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$15.31","stockQuantity":0,"priceTiers":[{"qty":20,"price":"$15.31000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/26d7d48a90ef98e61bd0bf857798eb9f.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Does R1LP0408DSB-5SI#B0 require a 5V supply or can it run at 3.3V?","answer":"This SRAM requires a 4.5 V to 5.5 V supply rail. It will not operate from a 3.3 V supply. If your design uses a 3.3 V memory bus, this part is not compatible."},{"question":"What is the access time of R1LP0408DSB-5SI#B0?","answer":"The access time is 55 ns for both read and write cycles. This is the time from address valid to data valid on the parallel bus."},{"question":"What is a suitable replacement for R1LP0408DSB-5SI#B0?","answer":"No official replacement or second-source alternate is listed in the record for this exact order code. Functionally similar 4 Mbit parallel SRAMs in 32-TSOP II from other manufacturers exist, but pin compatibility and timing must be verified against your specific memory controller before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/renesas/R1LP0408DSB-5SIB0","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/renesas/R1LP0408DSB-5SIB0 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}}