: Use a smaller resistor or smaller capacitor. Lower Frequency : Use a larger resistor or larger capacitor.
– For large R (>100 kΩ) and high frequency, IC input capacitance (≈5 pF) adds error. 74hc14 oscillator calculator full
74hc14 relaxation oscillator - NI Forums - National Instruments : Use a smaller resistor or smaller capacitor
Happy oscillating!
At very high frequencies (approaching 10 MHz), the internal propagation delay of the inverter (approx 15–30 ns) becomes a significant fraction of the period. A full calculator must include a term for ( t_pd ). 100 kΩ) and high frequency