a signal translator circuit for particular use with low level logic signals is designed to accept a low level transitioning signal in a lower voltage range and output a signal transitioning within a higher voltage range . circuitry is provided to ensure proper operation even at very low voltages . the circuitry which ensures proper operation at low voltages is selectively enabled when low input voltage input signals are used . in addition , the output signal is selectively disabled to allow downstream circuits to conserve energy during power up and power down cycles .