Original Part
Alternative Part
SDRAM - DDR Memory IC 128Mbit Parallel 167 MHz 700 ps 66-TSOP
SDRAM - DDR Memory IC 128Mbit Parallel 200 MHz 700 ps 66-TSOP II
1. MT46V8M16P-6T L:D TR Substitution Conclusion
Direct substitution is not recommended due to the risk of performance mismatch. The key discrepancy lies in its nominal clock frequency (167 MHz), which is significantly lower than that of the original part (200 MHz). Its data transfer bandwidth (theoretical peak approximately 333 MT/s) may fail to meet the memory bandwidth requirements of the original design, potentially leading to degraded performance or timing errors in high‑speed systems. Although core parameters such as capacity, bit width, voltage, and package are compatible, this performance downgrade is fundamental. It may only be considered in systems that are insensitive to clock frequency or can tolerate under‑clocking; otherwise, a thorough re‑evaluation of system timing is required.
2. IS43R16800E-5TL Substitution Conclusion
This device can serve as a highly compatible potential direct‑replacement option. Its key technical parameters are fully aligned with the original part: identical clock frequency (200 MHz), density organization (128Mbit, 8M x 16), operating voltage (2.3V–2.7V), and package (66‑TSOP). The only descriptive variation is in the “memory interface” entry: the original part is specified as “SSTL_2,” whereas this part is listed as “Parallel.” In practice, both refer to the same physical and electrical interface standard—DDR SDRAM employs a parallel interface with SSTL_2 signaling—and there is no substantive difference in engineering application. This part provides a functionally and performance‑equivalent replacement for the original.
Analysis ID: 278C-A25C000
Based on part parameters and for reference only. Not to be used for procurement or production.
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