A p-channel MOSFET that conducts current via holes when the gate voltage is pulled lower than the source voltage. Because holes have lower mobility than electrons, pMOSFETs typically need to be sized wider than their n-channel counterparts to achieve the same drive strength. They serve as the pull-up network in standard CMOS digital logic.
You need to size up the pMOSFET by a factor of two or three to match the rise time with the fall time of the nMOSFET.
Also heard as
- p-channel metal-oxide-semiconductor field-effect transistor
- pMOS
Related terms
nMOSFET
An nMOSFET is a transistor that uses a positive gate voltage to create an electron-conducting channel.
MOSFET
A metal-oxide-semiconductor field-effect transistor is a voltage-controlled switch used to amplify or switch electronic signals.
CMOS
Complementary metal-oxide-semiconductor is the dominant fabrication technology for integrated circuits.
pMOS
A field-effect transistor that uses positive charge carriers to conduct current.