# different threshold value of 2 inverters

What is the meaning of having 2 series inverters, one with the switching threshold at 1.025 V and the other with the threshold at 0.3V?

What does this difference between the switching levels mean?

The circuit has a sine wave at the input of the inverters and it makes a clock signal from 1.8V to 0V.

Thank you!

## 1 Answer

Switching threshold means inverter is working when the input more than threshold (kind a comparator) . So In your circuit 1.035v inverter's duty cycle is %43.5 other's duty cycle is %83.If you want %50 duty cycle you should chose a inverter with 0.9V switching threshold.Also if you connect these inverters parallel they short circuit each other because of phase difference (one is positive when the other negative (or ground))

• they are in a series connection Sep 1, 2019 at 17:58
• Can you add circuit's schematic ? Is it like this : Input>1.035v inverter>0.3V inverter>output Sep 1, 2019 at 18:00
• picture added. Q1 is the signal coming from an quartz Sep 1, 2019 at 18:03
• I don't want to lose my time for circuit analysis so which ones inverter (1.035v ) and inverter (0.3v) ? Sep 1, 2019 at 18:08
• the first is 1.035v and the second is 0.3V Sep 1, 2019 at 18:11