Original Part
Alternative Part
1. SN74HCT04PW Substitution Conclusion
The SN74HCT04PW is a fully qualified direct replacement. It matches the original MC74HCT04ADTR2G in all key aspects: core functionality, supply voltage range (4.5–5.5 V), logic levels (Vil = 0.8 V, Vih = 2 V), output drive capability (4 mA), and package (14-TSSOP). Minor variations exist in the quiescent current (2 µA for TI vs. 1 µA for Onsemi) and the specified maximum propagation delay (18 ns @ 5.5 V for TI vs. 17 ns @ 5 V for Onsemi). The slightly higher static power consumption of the TI device is negligible in a 5 V system. Furthermore, propagation delays are functionally equivalent under identical test conditions; the 1 ns difference has no practical impact on timing in the vast majority of HCT circuits. Therefore, the SN74HCT04PW is a valid drop-in substitute.
2. SN74HCT04PWT Substitution Conclusion
The SN74HCT04PWT is also a fully qualified direct replacement, and its substitution conclusion is identical to that of the SN74HCT04PW. According to Texas Instruments (TI) nomenclature, the suffix "T" denotes tape-and-reel packaging, while "PW" indicates the 14-TSSOP package. The SN74HCT04PWT and SN74HCT04PW are the same die in different packaging formats; there is no difference in their electrical parameters or functional performance. Relative to the original part, it exhibits the same minor nominal differences in quiescent current and propagation delay, neither of which affects its viability as a direct substitute in practical applications. The PWT variant is primarily intended for automated assembly processes.
Analysis ID: 6C47-BADF000
Based on part parameters and for reference only. Not to be used for procurement or production.
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