Methods and apparatus to dynamically correct level shifter circuitry

An apparatus comprising:

• level shifter circuitry having a first terminal, a second terminal, and a third terminal;
• current source circuitry having a first terminal and a control terminal, the first terminal of the current source circuitry coupled to the first terminal of the level shifter circuitry;
• a first transistor having a first terminal, a second terminal, and a control terminal, the first terminal of the first transistor coupled to the control terminal of the current source circuitry, the control terminal of the first transistor coupled to the second terminal of the level shifter circuitry;
• a second transistor having a first terminal and a second terminal, the first terminal of the second transistor coupled to the second terminal of the first transistor;
• and
• a third transistor having a first terminal and a control terminal, the first terminal of the third transistor coupled to the second terminal of the second transistor, the control terminal of the third transistor coupled to the third terminal of the level shifter circuitry.

An apparatus comprising:

• correction circuitry configured to:
• compare a digital input from a first circuit to a digital output of a second circuit;
• and
• generate a current based on the comparison;
• and
• level shifter circuitry coupled to the correction circuitry, the level shifter circuitry configured to:
• receive the digital input from the first circuit;
• and
• generate the digital output in the second circuit based on a logical state of the digital input;
• and
• adjust the logical state of the digital output responsive to the current from the correction circuitry.