1. 74HCT04T14-13 Substitution Conclusion The 74HCT04T14-13 is compatible with the original SN74HCT04PWT in terms of logic function and package outline. However, its suitability as a drop-in replacement is limited due to notable differences in static power consumption and propagation delay. Specifically, its maximum static current is 20 µA (compared to 2 µA for the original), which increases power dissipation by a factor of ten in standby or low-load conditions. This makes it potentially unsuitable for battery-powered or power-sensitive applications. Additionally, its maximum propagation delay is 22 ns @ 4.5 V, 50 pF (versus 18 ns @ 5.5 V, 50 pF for the original), indicating slower signal processing speed and a lower test voltage. These characteristics may lead to performance degradation or timing errors in high-speed or timing-critical circuits. While the output current in the low state is 5.2 mA (compared to 4 mA for the original), providing slightly stronger drive capability, this advantage does not outweigh the drawbacks in power and delay. Therefore, substitution should be carefully evaluated based on the specific application requirements.