Original Part
Alternative Part
1. CD74HCT04PWRG4 Substitution Conclusion
The CD74HCT04PWRG4 can essentially replace the MC74HCT04ADTR2G, as both share identical core logic functionality, supply voltage range (4.5V–5.5V), input threshold levels (VIL=0.8V, VIH=2V), and package (14-TSSOP). However, two differences should be noted: first, the quiescent current is slightly higher (2μA vs. 1μA), which may have a minor impact in battery‑powered or ultra‑low‑power applications; second, the maximum propagation delay is marginally slower (19ns @ 4.5V vs. 17ns @ 5V), requiring verification of timing margins in strict timing or high‑frequency designs. That said, the output drive capability (4mA) is the same, making the substitution viable in typical 5V HCT logic systems.
2. MM74HCT04MTC Substitution Conclusion
The MM74HCT04MTC can serve as a replacement for the MC74HCT04ADTR2G. Both are Onsemi HCT‑series hex inverters with identical supply voltage, input levels, and package. Key differences include: a slightly higher quiescent current (2μA vs. 1μA), which should be evaluated in power‑sensitive designs; a somewhat stronger output drive current (4.8mA vs. 4mA), beneficial for driving capacitive loads; and a marginally longer maximum propagation delay (20ns @ 5V vs. 17ns @ 5V), which may limit the maximum operating frequency. In most mid‑ to low‑speed circuits, however, this has little impact. Overall, the MM74HCT04MTC is a compatible substitute where extreme timing or power constraints are not critical.
Analysis ID: FA99-B25F000
Based on part parameters and for reference only. Not to be used for procurement or production.
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