Original Part
SRAM - Asynchronous Memory IC 4Mbit Parallel 10 ns 48-TFBGA (6x8)
Alternative Part
SRAM - Asynchronous Memory IC 4Mbit Parallel 12 ns 48-CABGA (9x9)
SRAM - Asynchronous Memory IC 4Mbit Parallel 12 ns 48-CABGA (9x9)
1. Substitution Conclusion for 71V416L12BE8
From a functional standpoint, the 71V416L12BE8 can serve as a replacement for the original part IS61WV25616BLL-10BLI-TR, as both are 4Mbit, 256K x 16 asynchronous SRAMs with parallel interfaces and identical core memory functionality. Three key differences exist. First, the access time and write cycle time have increased from 10 ns to 12 ns, making the substitute part slower, which may impact response times in high-performance applications. Second, the power supply voltage range has narrowed from 2.4V–3.6V to 3.0V–3.6V; the substitute cannot operate in systems below 3V, limiting its low-voltage compatibility. Finally, the package has changed from a 48-TFBGA (6x8) to a 48-CABGA (9x9). The differing package type and physical footprint may result in pinout incompatibility, necessitating a PCB layout redesign. Feasibility of the substitution depends on whether the specific application can tolerate the slower speed, higher minimum voltage requirement, and accommodate the package change.
2. Substitution Conclusion for 71V416L12BEG
The substitution conclusion for the 71V416L12BEG is essentially identical to that for the 71V416L12BE8, as their specifications are the same. Both are 4Mbit asynchronous SRAMs from Renesas with a 12 ns access time, 3.0V–3.6V supply voltage, and a 48-CABGA (9x9) package. The differences compared to the original part similarly include: a slower access time (12 ns vs. 10 ns), resulting in a slight performance degradation; a narrower supply voltage range (starting at 3.0V vs. 2.4V), making it incompatible with lower-voltage systems; and a different package (CABGA vs. TFBGA), which may cause physical mounting and pin layout mismatches, requiring hardware adjustments. The viability of this substitution hinges on whether the application can accept these differences, particularly the package and voltage requirements. If no specific constraints exist, it can be considered a functional replacement, but system compatibility must be evaluated.
Analysis ID: 277B-C758000
Based on part parameters and for reference only. Not to be used for procurement or production.
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