Reference sheet for the 74AC04 hex inverter, an advanced CMOS logic part, supplied as a 301 KB PDF in the schematic category. It contains six simple inverters, and the file should give pin assignment, supply range and propagation delays. Inverters like this are common in clock buffering and signal polarity stages, so a failed gate can stop an oscillator. Check inputs and outputs with a scope against the pinout. Confirm the exact family marking, as HC, HCT and AC variants share pinouts but differ in speed and levels.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @cyberlanelectonik. Enginerys does not host this file.
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