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. 71V416L12BEG8 Substitution Conclusion
This part can serve as a direct functional replacement, but it is a downgraded compatible substitution requiring a thorough system compatibility assessment. The key differences are as follows: First, the access time has increased from 10ns to 12ns, representing a 20% reduction in memory speed. In high-speed systems with stringent timing requirements, this may cause timing violations or necessitate a reduction in the master clock frequency. Second, the operating voltage range has narrowed from 2.4V-3.6V to 3.0V-3.6V. This device will not function on power rails below 3.0V, rendering it completely unusable if the original design utilized voltages such as 2.5V. Furthermore, while both packages are 48-ball BGAs, the footprint has changed from 6x8 to 9x9 (CABGA). The ball pad layout is incompatible with the original PCB footprint, mandating a board redesign.
2. 71V416L12BEGI Substitution Conclusion
The substitution conclusion for this part is identical to that for the 71V416L12BEG8. Their datasheet parameters are exactly the same. The suffix "I" likely denotes a wider operating temperature range (e.g., Industrial grade) or compliance with specific standards like lead-free, which does not affect the core electrical specifications or package. Substitution feasibility similarly hinges on whether the system can accommodate the slower speed (12ns), the higher minimum operating voltage (3.0V), and the different physical footprint (9x9 CABGA). Prior to substitution, the same rigorous checks for supply voltage, timing budget, and PCB footprint compatibility—as required for the BEG8 variant—must be performed.
Analysis ID: 9D6E-44DE000
Based on part parameters and for reference only. Not to be used for procurement or production.
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