Texas Instruments SN74HC04N CD74HC04 74HC04 Hex Inverters DIP14 5 Pack

I used these chips for inverting an FTDI UART to TTL adapter to work on an old GM ECM. It is also commonly used on PIC chips etc. These days it's very difficult to ensure you're getting a quality chip--and not a counterfeit. I meant to take a photo of the Oscilloscope plot...but no time...However, response is near perfect up to the limit I tested (1 mghz). no distortion...all of them worked. One caveat--this chip does require its own power supply to work--I have seen imitation chips use the USB feed to power the gate---this one will not...which is probably one reason signal is so clear...quality chip with unbeatable Amazon logistics--a great combination.

Inverters working well used to invert output from inferred Sencers

Used in a modded Hori wired mini gamepad to turn into a fightstick/arcadestick. beautiful IC

These TTL logic chips were great for my electronic circuit experiments.