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https://www.ti.com/product/SN7400 is also "4-ch, 2-input, 4.75-V to 5.25-V bipolar NAND gates". I mentioned BJT and FET, for the latter there is https://www.ti.com/product/SN74AHCT00

Might be useful to know what BJT and FET means and then you will see that standard / original TTL is always "bipolar", for example.



Do you not realize that the design that TI currently sells is different from the 1965 design that we were discussing?

They are even manufactured using very different technology.

Like I said, just because it shares the same part number and is labelled "bipolar NAND gate" does not mean that it's approximately the same.


Well, this obviously has nothing to do with boot-up of a CPU anymore, either, so I'm out now.




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