Original Part
SRAM - Asynchronous Memory IC 4Mbit Parallel 12 ns 48-CABGA (9x9)
Alternative Part
SRAM - Asynchronous Memory IC 4Mbit Parallel 15 ns 48-CABGA (9x9)
SRAM - Asynchronous Memory IC 4Mbit Parallel 15 ns 48-CABGA (9x9)
1. 71V416L15BEGI8 Substitution Conclusion
Downgrade substitution is feasible, but a rigorous system timing assessment is mandatory. The primary difference between this part and the original part lies in its degraded access time and read/write cycle, reduced from 12ns to 15ns, indicating slower operational speed. This substitute can be considered compatible if the original system has sufficient timing margin at 12ns or if the operating frequency requirement is not stringent. Otherwise, direct substitution in high-speed, timing-critical systems may lead to read/write errors or system instability. The two devices are identical in memory density, organization, voltage (core/logic), package, and core technology, which forms the basis for the substitution.
2. 71V416S15BEGI8 Substitution Conclusion
This part is essentially a direct drop-in replacement and may offer better adaptability in certain scenarios. Compared to the original part, there are two key differences: first, its speed grade is 15ns, slower than the original 12ns; second, it features a wider operating voltage range (2.7V to 3.6V) compared to the original's 3.0V to 3.6V. The impact of the slower speed is identical to the case described above and requires verification that system timing budgets are not violated. Conversely, the wider voltage range can enhance operational stability and compatibility in systems with power supply fluctuations or those utilizing lower supply rails (e.g., a 2.8V rail). Given identical package and core electrical specifications, this part is a functionally and physically viable direct substitute.
Analysis ID: 2474-0390000
Based on part parameters and for reference only. Not to be used for procurement or production.
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