Original Part
SDRAM - DDR Memory IC 128Mbit Parallel 167 MHz 700 ps 66-TSOP
Alternative Part
SDRAM - DDR Memory IC 128Mbit Parallel 200 MHz 700 ps 66-TSOP II
SDRAM - DDR Memory IC 128Mbit Parallel 200 MHz 700 ps 66-TSOP II
1. IS43R16800E-5TLI-TR Substitution Conclusion
The IS43R16800E-5TLI-TR can serve as a direct, drop-in replacement for the original part MT46V8M16P-6T L:D TR and is considered an "upgrade substitution." The key technical differentiator is the clock frequency: the original part operates at 167MHz, while the ISSI device is rated for 200MHz. This grants the ISSI device higher theoretical data transfer bandwidth and superior performance. Given complete compatibility in electrical interface (16-bit parallel), key timing (access time of 700ps), operating voltage (2.3V-2.7V), and physical package (66-TSOP), the higher-performance device can operate stably in a derated mode within a circuit designed for the Original Part. However, it is essential to verify that the host controller's clock and timing configurations are compatible with the 167MHz frequency (i.e., downward compatibility) and that the system has no specific initialization sequence requirements unique to the Micron chip.
2. IS43R16800E-5TL-TR Substitution Conclusion
The IS43R16800E-5TL-TR is functionally identical to the aforementioned -5TLI-TR variant in all provided core parameters. Therefore, its feasibility and conclusion as a replacement for the original part are identical, also constituting an "upgrade substitution." There is no difference in their primary technical specifications. The minor variance in the part number suffix (typically indicating reel packaging, lead-free status, or internal factory codes) does not affect electrical functionality or physical compatibility at the board level. Based on the same analysis of clock frequency (200MHz vs. 167MHz), interface, voltage, and package compatibility, it can be used as a higher-performance alternative, subject to the same evaluation conditions (controller compatibility and initialization sequence).
Analysis ID: 4F6B-9ECB000
Based on part parameters and for reference only. Not to be used for procurement or production.
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