Patent ID: 9712151
Date: 2017-07-18
CPC Classifications: H03K

Claim:
1. Circuitry for driving an output node, the circuitry comprising: a first output transistor having: a drain coupled to the output node; and a source coupled to a high voltage node having a high voltage; wherein the first output transistor is coupled to drive the output node to approach the high voltage while a first switch is closed; a second output transistor having: a drain coupled to the output node; and a source coupled to a low voltage node having a low voltage; wherein the second output transistor is coupled to drive the output node to approach the low voltage while a second switch is closed; a first current/voltage generator coupled through at least the first switch to: a gate of the first output transistor; and a control node; a second current/voltage generator coupled through at least the second switch to: a gate of the second output transistor; and the control node; and a capacitor coupled between the control node and the output node; wherein, while the first switch is closed, the first current/voltage generator is coupled to operate as: a first current generator while the first output transistor transitions the output node from near the low voltage to approach the high voltage; and a first voltage generator to keep the control node near a threshold voltage of the second output transistor while the output node is near the high voltage; and wherein, while the second switch is closed, the second current/voltage generator is coupled to operate as: a second current generator while the second output transistor transitions the output node from near the high voltage to approach the low voltage; and a second voltage generator to keep the control node near a threshold voltage of the first output transistor while the output node is near the low voltage.