I want to use a 555 chip at say 8.5MHz, I have choose to use a 1pF cap for the pin 2 to ground of the chip, a 82k for 2 to 7 pin and a 6.8k resistor for the 7 to 8 pin, the output waveforms is not critical, Can you guys tell me if 555 is able to handle that freq?
I know that this chip works just at 500MHz max,but what if I use it at 8.5MHz?
I want to use a 555 chip at say 8.5MHz, I have choose to use a 1pF cap for the pin 2 to ground of the chip, a 82k for 2 to 7 pin and a 6.8k resistor for the 7 to 8 pin, the output waveforms is not critical, Can you guys tell me if 555 is able to handle that freq? I know that this chip works just at 500MHz max,but what if I use it at 8.5MHz?
What is this for? If it's for RF give the idea up immediately, it will be completely unstable. You obviously have a 555 in mind from the start, but if you tell us what you want to actually DO we might be able to offer better suggestions or chips, you're not giving us much to work with.
An oscillator can be built using CMOS gates which work up to a much higher frequency than a 555.
It's possible to use two gates, but at high frequencies it's not stable or a single Schmitt trigger but it's not very accurate. **broken link removed**
In this case I think it's better to use three gates because it's stable it high frequencies and more accurate than a Schmitt trigger.
I want to use a 555 chip at say 8.5MHz, I have choose to use a 1pF cap for the pin 2 to ground of the chip, a 82k for 2 to 7 pin and a 6.8k resistor for the 7 to 8 pin, the output waveforms is not critical, Can you guys tell me if 555 is able to handle that freq?
I know that this chip works just at 500MHz max,but what if I use it at 8.5MHz?