Original Part
SRAM - Asynchronous Memory IC 4Mbit Parallel 15 ns 48-CABGA (9x9)
Alternative Part
SRAM - Asynchronous Memory IC 4Mbit Parallel 10 ns 48-TFBGA (6x8)
SRAM - Asynchronous Memory IC 4Mbit Parallel 10 ns 48-TFBGA (6x8)
1. IS61WV25616BLL-10BLI Substitution Conclusion
The conclusion is a conditional substitution requiring PCB redesign. The IS61WV25616BLL-10BLI is fully compatible and superior to the original part in core functionality (4Mbit density, 256Kx16 organization, parallel interface) and voltage compatibility (its 2.4-3.6V range encompasses the original's 3.0-3.6V). It also offers a faster speed grade (10ns). Therefore, it is directly compatible in terms of electrical performance and logic interface, with enhanced performance.
However, a critical difference exists in the package. The original part uses a 48-CABGA (9x9) package, whereas the substitute is a 48-TFBGA (6x8). Their footprints and physical dimensions are incompatible. Modifying the PCB design for physical mounting is the primary obstacle to implementing this substitution.
2. IS61WV25616BLL-10BLI-TR Substitution Conclusion
The conclusion is a conditional substitution requiring PCB redesign. Electrically, there is no difference between this variant and the one without the "-TR" suffix. All technical parameters of the IS61WV25616BLL-10BLI-TR, including its faster speed (10ns) and wider voltage range (2.4-3.6V), are identical to the IS61WV25616BLL-10BLI. Consequently, its functional compatibility and performance advantages are the same.
The "-TR" suffix typically denotes Tape and Reel packaging for automated SMT assembly. It affects procurement and assembly logistics but not the electrical characteristics of the device itself. The core condition for substitution remains identical to the part above: the package incompatibility (48-TFBGA vs. 48-CABGA) must be addressed by redesigning the PCB layout.
Analysis ID: E4C1-591E000
Based on part parameters and for reference only. Not to be used for procurement or production.
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