74hc14 Oscillator Calculator Full ^new^ Link

). The calculation is based on the charge and discharge times of the capacitor between the IC's specific hysteresis threshold voltages ( cap V sub cap T plus end-sub cap V sub cap T minus end-sub Quick Oscillator Calculation

The frequency ( f = 1 / (t_1 + t_2) ).

T=RC×ln((VCC−VT−)×VT+(VCC−VT+)×VT−)cap T equals cap R cap C cross l n open paren the fraction with numerator open paren cap V sub cap C cap C end-sub minus cap V sub cap T minus end-sub close paren cross cap V sub cap T plus end-sub and denominator open paren cap V sub cap C cap C end-sub minus cap V sub cap T plus end-sub close paren cross cap V sub cap T minus end-sub end-fraction close paren : Resistance in Ohms ( Ωcap omega : Capacitance in Farads ( VT+cap V sub cap T plus end-sub VT−cap V sub cap T minus end-sub : Positive and negative-going threshold voltages. 74hc14 oscillator calculator full

[ T_total = T_RC + 2 \cdot t_pd ]

The frequency? Approximately: