Original Part
SRAM - Asynchronous Memory IC 4Mbit Parallel 12 ns 48-CABGA (9x9)
Alternative Part
SRAM - Asynchronous Memory IC 4Mbit Parallel 10 ns 48-TFBGA (6x8)
SRAM - Asynchronous Memory IC 4Mbit Parallel 8 ns 48-TFBGA (6x8)
1. Substitution Conclusion for IS61WV25616EDBLL-10BLI
From a core functionality and parametric standpoint, this part is a viable direct substitute. The key differences are: it offers faster access/write times (10 ns vs. 12 ns), providing superior performance and full timing compatibility with margin. Its operating voltage range is wider (2.4V~3.6V vs. 3V~3.6V), offering better compatibility at lower voltages and higher tolerance to supply fluctuations. This makes it particularly suitable for systems with low-power or wide-voltage design requirements. While the package is also a 48-TFBGA, the specific dimensions and ball-out array (6x8 vs. 9x9) may not be identical to the original 48-CABGA. It is critical to rigorously verify PCB footprint compatibility, as a PCB revision may be necessary. Provided the package is mechanically and layout-compatible, this part serves as a perfect electrical and functional replacement, offering enhanced performance and robustness.
2. Substitution Conclusion for IS61WV25616EDBLL-8BLI
This part is another strong, functionally equivalent substitute candidate. Its most notable advantage is the significantly faster access/write time (8 ns vs. 12 ns), which provides higher system performance margin and is better suited for high-speed applications. Its operating voltage range is identical to the original part (3V~3.6V), allowing for a drop-in replacement with no changes to the power supply design. Similar to the -10BLI variant, it uses a 48-TFBGA package (6x8 array), which differs physically from the original 48-CABGA (9x9 array). This physical layout discrepancy remains the primary obstacle for substitution and requires thorough package compatibility verification. In summary, if the package compatibility issue is resolved, this part enables the most straightforward power-compatible replacement while delivering a substantial performance upgrade.
Analysis ID: 5AF2-E268000
Based on part parameters and for reference only. Not to be used for procurement or production.
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