1.74ABTH162245ADGG,1 Substitution Conclusion From the perspective of core functionality and electrical specifications, the 74ABTH162245ADGG,1 can serve as a direct replacement for the original part. However, differences in drive capability and package dimensions require careful evaluation in the actual application. Specifically: (1) Output Current Difference: The original part (TI) can deliver up to 32 mA (high-level) and 64 mA (low-level) under specified conditions, whereas the Nexperia part is rated at 32 mA (high-level) / 12 mA (low-level). The substitute exhibits significantly lower current drive, especially in low‑level sink current, which may affect signal integrity when driving heavy loads or long traces. (2) Package Difference: The original part uses a 48‑BSSOP (wide‑body, 7.50 mm), while the substitute is supplied in a 48‑TFSOP (narrow‑body, 6.10 mm). Although pin‑to‑pin compatible, the narrower package of the substitute could cause mechanical interference if the original PCB layout has tight clearance. In summary, under conditions of low drive‑current demand (e.g., light capacitive loads) and adequate PCB space, the substitute can perform the bidirectional data transfer function correctly. However, if the original design relies on high sink‑current capability, circuit performance must be re‑verified.