The 71V65703S75BQG is fully compatible with the original model 71V65703S100BQG in terms of package (165-TBGA) and operating voltage range (3.135V–3.465V), making direct physical substitution feasible. The key difference lies in access time: the original device features 5 ns (corresponding to a 100 MHz clock frequency), while the new model has 7.5 ns. This significantly increased data output delay in the new device may reduce the maximum synchronous operating frequency of the system from 100 MHz to approximately 75 MHz, thereby impacting timing performance in high-speed applications. If the original design relies on 100 MHz operation or requires tight timing margins, substitution is not recommended. Conversely, if the system can tolerate a lower operating frequency or has sufficient timing slack, the replacement may be considered.