1. SN74ABT16245ADGG Substitution Conclusion The SN74ABT16245ADGG can serve as a replacement for the original part 74ABTH162245ADGG, though careful evaluation is advised in designs that are highly dependent on or sensitive to output drive current. Both devices are fully compatible in core functionality: they are 5.5V‑supply, non‑inverting, 2‑group 8‑bit tri‑state transceivers, and both are offered in a 48‑TSSOP package, ensuring pin‑to‑pin compatibility and identical basic logic behavior. The key difference lies in the low‑level output current capability: the original Nexperia part is rated at 12 mA, while the TI device supports 64 mA. The TI component provides significantly stronger output drive, particularly in sink current, which offers better noise margin and signal integrity when driving heavy loads such as multiple parallel inputs or long traces. However, if the original circuit was designed around a specific output current level—for instance, to limit power dissipation or to match termination resistance—the higher drive strength may lead to signal overshoot, ringing, or increased power consumption. Waveform verification in the actual circuit is recommended. Overall, this substitution represents an acceptable upgrade, but post‑replacement circuit testing should be performed to confirm that signal quality meets design expectations.