theblackpeacock
New member
- Joined
- Apr 30, 2007
- Messages
- 4
This is my first post here yay
Quote:
Notice that a digital CMOS circuit cannot (ideally) be in a pull-up and pull-down phase at the same time, or else both the p/n-networks will fight to keep the voltage on the capacitance either Vdd or ground. The p-type transistor network is complementary to the n-type transistor network, so that when the n-type is off, the p-type is on, and vice-versa.
This is from the wikipedia article on CMOS logic. I am very new to CMOS and am trying to understand it better, and so I have two questions.
MOSFETs are basically switches controlled by an input voltage and CMOS is just a big series of these, right?
And, as you read above, all-knowing wikipedia suggests a way to put one into both pull up and pull down phases (like a switch being both on and off at the same time and fighting toprovide each output with voltage.) If anyone knows how this happens and whether or not this is damaging to the MOSFET or CMOS circuit, I'd really appreciate it.
I really want to hear this happen.
Quote:
Notice that a digital CMOS circuit cannot (ideally) be in a pull-up and pull-down phase at the same time, or else both the p/n-networks will fight to keep the voltage on the capacitance either Vdd or ground. The p-type transistor network is complementary to the n-type transistor network, so that when the n-type is off, the p-type is on, and vice-versa.
This is from the wikipedia article on CMOS logic. I am very new to CMOS and am trying to understand it better, and so I have two questions.
MOSFETs are basically switches controlled by an input voltage and CMOS is just a big series of these, right?
And, as you read above, all-knowing wikipedia suggests a way to put one into both pull up and pull down phases (like a switch being both on and off at the same time and fighting toprovide each output with voltage.) If anyone knows how this happens and whether or not this is damaging to the MOSFET or CMOS circuit, I'd really appreciate it.
I really want to hear this happen.