Input-output buffer circuitry with increased drive strength

摘要

Input-output (IO) buffer circuitry is provided that is operable to drive signals off an integrated circuit. The input-output circuitry may include an input-output driver having an asymmetric transistor and/or a low-threshold voltage transistor. The asymmetric transistor may include a first source-drain region at a first dopant concentration level and a second source-drain region at a second dopant concentration level. The first dopant concentration level and the second dopant concentration level may be different. The IO buffer circuitry may be able to prevent issues with regards to hot carrier injection when driving signals with elevated voltages. The IO buffer circuit may also be manufactured without increasing the overall cost.

主权项

1. An integrated circuit, comprising:
input-output circuitry operable to drive signals off of the integrated circuit, wherein the input-output circuitry includes an input-output driver having a first asymmetric transistor having a first channel doping type and a second asymmetric transistor having a second channel doping type that is different than the first channel doping type.