Original Part
Alternative Part
1. MM74HCT04MTCX Substitution Conclusion
The MM74HCT04MTCX can serve as a direct replacement for the original part. Both devices are 6-channel HCT-series inverters from onsemi, with identical package, supply voltage range (4.5V–5.5V), and input threshold levels. Key parametric differences include a slightly higher quiescent current (2µA vs. 1µA), a marginally stronger output drive current (4.8mA vs. 4mA), and a somewhat longer propagation delay (20ns vs. 17ns @5V). These variations are negligible in most digital applications: the increase in quiescent current may warrant slight attention in very low-power designs, though it remains in the microampere range; the modestly higher output current could slightly improve load driving capability; the added propagation delay only requires verification against timing margins in high-frequency or critical timing paths. Overall, this device is functionally and electrically compatible and can be considered a drop-in replacement.
2. 74HCT04PW,112 Substitution Conclusion
The 74HCT04PW,112 is a viable substitute for the original part, though subtle parameter differences due to the manufacturer change should be noted. It shares the same supply range, logic levels, and package as the original. Its quiescent current is 2µA (slightly higher than the original 1µA), while the output drive current remains identical at 4mA. A key distinction lies in the propagation delay test condition: its specified maximum delay of 19ns is measured at 4.5V rather than 5V. In practice, at a 5V supply, its performance may be better than the datasheet value. This discrepancy generally does not affect functionality in typical digital circuits. However, for high-frequency or timing-critical systems, it is advisable to verify delay margins under the actual operating voltage. In summary, the device is electrically compatible and suitable for substitution, provided the delay test condition and potential long-term reliability variations from the manufacturer change are considered.
Analysis ID: C6FC-BC1B000
Based on part parameters and for reference only. Not to be used for procurement or production.
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