Original Part
SRAM - Asynchronous Memory IC 4Mbit Parallel 8 ns 48-TFBGA (6x8)
Alternative Part
SRAM - Asynchronous Memory IC 4Mbit Parallel 10 ns 48-TFBGA (6x8)
SRAM - Asynchronous Memory IC 4Mbit Parallel 12 ns 48-CABGA (9x9)
1. IS61WV25616BLL-10BLI Substitution Conclusion
Direct substitution is viable in most applications, but a thorough evaluation of the system's timing margin is required. The primary deviation from the original component is the degradation of access/cycle time from 8ns to 10ns, which reduces its maximum operating frequency. If the original system operates near the 8ns timing limit, a direct replacement may introduce read/write errors. Conversely, the operating voltage range is improved from 3.0-3.6V to 2.4-3.6V, offering better compatibility, particularly in scenarios with voltage fluctuations or low-power requirements. This difference, however, is inconsequential in standard 3.3V systems. The package, bit width, density, and manufacturer remain identical, resulting in a very high probability of pin-to-pin compatibility.
2. 71V416L12BEGI Substitution Conclusion
The feasibility for substitution is low, necessitating careful compatibility verification; a direct replacement is not recommended. Key differences from the original part include a significant degradation in access/cycle time from 8ns to 12ns, resulting in slower performance that may fail to meet timing requirements in high-performance systems. Furthermore, the manufacturer has changed from ISSI to Renesas. While the core functionality is equivalent, undocumented variations in detailed DC/AC electrical characteristics, internal timing parameters, and even test conditions may exist, introducing design uncertainty. Additionally, the device is specified in a 48-CABGA package. Although this may be similar in dimensions or ballout to a 48-TFBGA, the mechanical compatibility must be strictly verified against the package datasheet.
Analysis ID: 74A0-3FCC000
Based on part parameters and for reference only. Not to be used for procurement or production.
SkyChip © 2026, Email: sales@skychip.com