{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY7C1543V18-375BZC","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"CY7C1543V18-375BZC","canonicalUrl":"https://icboms.com/infineon/CY7C1543V18-375BZC","factsUrl":"https://icboms.com/api/mcp/products/CY7C1543V18-375BZC","rawCanonicalId":null},"summary":{"shortDescription":"Infineon Technologies CY7C1543V18-375BZC QDR II SRAM, 72Mbit (4M x 18), 375 MHz clock, 1.7-1.9V, 0-70°C, 165-FBGA, Tray.","salesMarkdown":"## QDR II SRAM at 375 MHz — the throughput ceiling The CY7C1543V18-375BZC is a 72Mbit synchronous SRAM built on the QDR II architecture — a double-data-rate interface that reads and writes on both clock edges, effectively doubling the data throughput per pin compared to a single-data-rate SRAM at the same clock frequency. The 375 MHz clock translates to a 750 MT/s data rate on the I/O bus, which is the bandwidth gate for high-speed networking buffers, line-card packet memories, and test-equipment capture arrays. Organised as 4M x 18 bits, the part provides 18-bit-wide data paths — common in 18-bit parity or ECC-protected memory words — and operates from a 1.7 V to 1.9 V core supply, which keeps I/O swing low enough to reduce switching noise on a dense BGA board. ## Package and board-fit — 165-ball FBGA Housed in a 165-ball LBGA with a supplier device package of 165-FBGA measuring 15x17 mm, the part is a surface-mount BGA that requires a multi-layer PCB for fan-out. The 1.0 mm ball pitch is typical for this density class — a 4-layer board with blind vias can route the full 18-bit data bus and address lines without excessive layer count. ## Obsolete — sourcing through surplus channels The part is not supported for new designs; existing BOM lines must be filled through independent distribution or surplus inventory. For a line-down or repair situation, the part is available to quote against an RFQ — quantities are lot-specific and confirmed at quote time. No pin-compatible direct replacement from Infineon is documented, so a board spin or a parametric search for a QDR II SRAM in the same 165-FBGA footprint is the migration path for new builds.","metaTitle":"CY7C1543V18-375BZC QDR II SRAM, 72Mbit, 375 MHz, 165-FBGA","metaDescription":"Infineon CY7C1543V18-375BZC QDR II SRAM, 72Mbit (4M x 18), 375 MHz clock, 1.7-1.9V, 0-70°C, 165-FBGA. Obsolete — sourced to order against RFQ.","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":"Tray","Technology":"SRAM - Synchronous, QDR II","Memory Size":"72Mbit","Memory Type":"Volatile","Memory Format":"SRAM","Mounting Type":"Surface Mount","Package / Case":"165-LBGA","Product Status":"Obsolete","Clock Frequency":"375 MHz","lifecycle_stage":"eol_hot","Memory Interface":"Parallel","Voltage - Supply":"1.7V ~ 1.9V","Base Product Number":"CY7C1543","Memory Organization":"4M x 18","Operating Temperature":"0°C ~ 70°C (TA)","Supplier Device Package":"165-FBGA (15x17)","Write Cycle Time - Word, Page":"-"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/8e4fce94fd929b9377beda81d7ab7449.pdf","sourceUrl":null},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/CY7C1543V18-375BZC","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/CY7C1543V18-375BZC when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-21T02:13:11.633Z","lastPublished":"2026-07-21T02:13:11.633Z","indexable":true}}