Patent ID: 7777550

Claim:
A circuit for converting an input signal having a first pair of rail voltages to an output signal having a second pair of rail voltages, said circuit comprising: an input lead for receiving said input signal; first and second transistors coupled in series between a first voltage supply lead and a second voltage supply lead; third and fourth transistors coupled in series between said first voltage supply lead and said second voltage supply lead, a control lead of said third transistor being coupled to a first node between said first and second transistors, a control lead of said first transistor being coupled to a second node between said third and fourth transistors, said second transistor turning on in response to said input signal transitioning from a first level to a second level, said fourth transistor turning on in response to said input signal transitioning from the second level to the first level; a fifth transistor coupling the control lead of said third transistor to a first charge source, the first charge source providing a first charge to turn off said third transistor when the fifth transistor is activated responsive to the input signal transitioning from said second level to said first level; and a sixth transistor coupling the control lead of said first transistor to a second charge source, the second charge source providing a second charge to turn off said first transistor when the sixth transistor is activated responsive to the input signal transitioning from said first level to said second level.