Original Part
SRAM - Synchronous, SDR (ZBT) Memory IC 9Mbit Parallel 7.5 ns 165-CABGA (13x15)
Alternative Part
SRAM - Synchronous, SDR (ZBT) Memory IC 9Mbit Parallel 8 ns 165-CABGA (13x15)
SRAM - Synchronous, SDR (ZBT) Memory IC 9Mbit Parallel 8 ns 165-CABGA (13x15)
1. 71V65703S80BQG Substitution Conclusion
This part is a direct drop-in replacement, provided that the system's timing margins are verified. The 71V65703S80BQG is identical to the original 71V65703S75BQG in core architecture, density (256K x 36), voltage, and package. The sole difference is a slight increase in access time from 7.5 ns to 8.0 ns. This results in a marginally lower maximum operating speed. If the original design operated at 7.5 ns with sufficient timing margin, replacing it with the 8 ns version is fully compatible both electrically and mechanically, and system functionality will be maintained. However, if the original design was timing-critical, the substitution could introduce stability risks. It is therefore necessary to re-validate the timing at the target operating frequency.
2. 71V65703S80BQGI Substitution Conclusion
This component can serve as a direct replacement when a wider operating temperature range is required, subject to the same timing verification. The 71V65703S80BQGI differs from the original 71V65703S75BQG in two key aspects. First, its access time is increased from 7.5 ns to 8.0 ns, identical to the 71V65703S80BQG. Second, the suffix "I" typically indicates a wider operating temperature range (e.g., Industrial grade, -40°C to +105°C), whereas the original part was likely Commercial grade (e.g., 0°C to +70°C). The BQGI variant offers superior reliability under high or low-temperature extremes. If the application environment remains within the original part's specified temperature range, the substitution is functionally and compatibly feasible and may even enhance the system's environmental robustness. Nevertheless, the impact of the 8 ns access time on system timing must be assessed.
Analysis ID: D3B3-5141000
Based on part parameters and for reference only. Not to be used for procurement or production.
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