I am trying to make a square wave generator using 555. I need a 16kHz 0-5V square wave. I have referenced this site (%50 duty cycle). When the frequency increases, the square wave have distorted gradually. This is my circuit for 16 kHz, 741 is used for buffer.
My output voltage is;
When i set R3 to 450Ω to decrease frequency to 1.6 kHz, the response is better;
Do you have a idea to get a better square wave for 16 kHz in this circuit? Thank you so much.