Here we show an oscillator that uses an LC network. The upper limit depends on the power-supply voltage and is about 4 MHz for 10 V. Notice that the 4089 is formed by simple inverters.

LC Oscillator Using the 4069
Here we show an oscillator that uses an LC network. The upper limit depends on the power-supply voltage and is about 4 MHz for 10 V. Notice that the 4089 is formed by simple inverters.