Patent ID: 8570072

Claim:
An apparatus comprising: a first circuit configured to compare a first input voltage with a second input voltage, wherein the first circuit outputs a first output voltage at a first output and a second output voltage at a second output based on the comparison of the first input voltage and the second input voltage; and a second circuit configured to compare a third input voltage with a fourth input voltage, wherein the second circuit outputs a third output voltage at a third output and a fourth output voltage at a fourth output based on the comparison of the third input voltage and the fourth input voltage, wherein the first circuit is configured to draw a first portion of current from the second output or draw a second portion of current from the first output to cause the first circuit to exhibit a first hysteresis, and wherein the second circuit is configured to draw a third portion of current from the fourth output or draw a fourth portion of current from the third output to cause the second circuit to exhibit a second hysteresis, and wherein a total amount of hysteresis in the first hysteresis and second hysteresis is configurable based on a ratio between transistor widths in the first circuit and second circuit.