Original Part
SRAM - Asynchronous Memory IC 4Mbit Parallel 10 ns 48-TFBGA (6x8)
Alternative Part
SRAM - Asynchronous Memory IC 4Mbit Parallel 10 ns 48-CABGA (9x9)
SRAM - Asynchronous Memory IC 4Mbit Parallel 12 ns 48-CABGA (9x9)
1. 71V416L10BEG8 Substitution Conclusion
The 71V416L10BEG8 aligns with the original part, IS64WV25616BLL-10BLA3, in core specifications: 4Mbit density, 256K x 16 organization, parallel interface, and 10 ns access time. Functionally, it is a potential substitute. Key deviations are the supply voltage range (3V – 3.6V vs. the original part's 2.4V – 3.6V) and the package type (48-CABGA (9x9) vs. the original 48-TFBGA (6x8)). The narrower voltage range could cause operational failure if the system voltage dips below 3V (e.g., in 2.5V or 2.8V applications), necessitating careful power rail compatibility checks. The package difference involves distinct physical dimensions and pad layouts, requiring PCB redesign to accommodate the larger footprint and potential pinout variations. Additionally, the manufacturer change from ISSI to Renesas may impact supply chain and cost. In summary, substitution is electrically viable if the system voltage remains above 3V and the package change is acceptable. However, pin compatibility and timing parameters must be validated, and the cost of PCB modifications must be factored in.
2. 71V416L12BE Substitution Conclusion
The 71V416L12BE matches the original part, IS64WV25616BLL-10BLA3, in memory density, organization, and interface. Differences include a slower access time (12 ns vs. the original part's 10 ns), a narrower supply voltage range (3V – 3.6V vs. 2.4V – 3.6V), and a different package type (48-CABGA (9x9) vs. 48-TFBGA (6x8)). The slower access time may degrade system performance, requiring evaluation against timing margins in high-speed applications. The restricted voltage range similarly limits system compatibility, mandating a minimum 3V supply. The package discrepancy necessitates PCB re-layout, adding design cost. If the application is not speed-critical (tolerant of slightly longer latency) and both voltage and package conditions are met, functional substitution is possible. A comprehensive assessment of the performance impact and modification costs is required, along with verification of other parameters such as power consumption and operating temperature range.
Analysis ID: 1DD8-BBC5000
Based on part parameters and for reference only. Not to be used for procurement or production.
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