Original Part
SRAM - Asynchronous Memory IC 4Mbit Parallel 8 ns 48-TFBGA (6x8)
Alternative Part
SRAM - Asynchronous Memory IC 4Mbit Parallel 10 ns 48-MiniBGA (8x10)
SRAM - Asynchronous Memory IC 4Mbit Parallel 10 ns 48-TFBGA (6x8)
1. AS7C34098A-10BINTR Substitution Conclusion
This part is a viable, functionally compatible substitute, but its use is conditional. The key differences are a reduction in access time and write cycle time from 8ns to 10ns, resulting in a slower device. If the original system design lacks sufficient timing margin, this speed degradation may cause read/write errors during high-speed operation. While the package is also listed as 48-TFBGA, the noted dimensions in parentheses are (8x10), which may differ from the original part's (6x8) in pad layout or outline. It is essential to verify against the package drawing to confirm mechanical compatibility with the PCB layout. Substitution is acceptable provided the system clock requirements are not stringent and the package is physically compatible.
2. IS61WV25616EDBLL-10BLI-TR Substitution Conclusion
This component represents a higher feasibility alternative and is the preferred choice. The performance difference is similarly a speed reduction from 8ns to 10ns, carrying the same risk of performance degradation as noted above. However, it offers a wider operating voltage range (2.4V to 3.6V vs. 3.0V to 3.6V), providing better compatibility at lower voltages without negative impact on a standard 3.3V system. Crucially, it is from the same manufacturer and product family as the original part. The package specification—48-TFBGA (6x8)—is identical, making it highly probable that the pinout, electrical characteristics, and physical dimensions are exactly the same. This results in the lowest replacement risk. Assuming the system can tolerate the speed reduction, this part is an almost perfect drop-in replacement.
Analysis ID: DD54-8C53000
Based on part parameters and for reference only. Not to be used for procurement or production.
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