1. Output Drive Capability – The TI variant offers an output current of ±4mA, while the on‑semi model provides ±4.8mA. When driving heavy loads (such as multiple parallel inputs or capacitive loads), the TI device has slightly lower drive margin, though it remains within the standard HCT family specification. This difference does not materially affect typical digital circuit operation. 2. Propagation Delay – The TI device exhibits a maximum delay of 18ns (tested at 5.5V), which is better than the 20ns (at 5V) of the on‑semi part. In practice, this results in slightly faster signal response and imposes no negative impact on system timing. In summary, substitution is feasible. However, if the original circuit design relies on the maximum drive capability (close to 4.8mA), the actual load conditions should be verified for compatibility.