IC7400's nomenclature contain the word "Schottky", what does it signify?
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* 74 - the "standard TTL" logic family had no letters between the "74" and the specific part number.
* 74L - Low power (compared to the original TTL logic family), very slow
* H - High speed (still produced but generally superseded by the S-series, used in 1970s era computers)
* S - Schottky (obsolete)
* LS - Low Power Schottky
* AS - Advanced Schottky
* ALS - Advanced Low Power Schottky
* F - Fast (faster than normal Schottky, similar to AS)
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