Achieving Subnanosecond Delays Using Feedback with the Current Switch

Beginning the basic current switch, the application of feedback is explored to achieve faster switching speeds with greater fanpower. This paper qualitatively describes the evolution of an integrated circuit that requires only one power supply and has, through the introduction of time-dependent negative feedback, achieved subnanosecond propagation delays with the ultimate speed limited primarily by the device used, the component tolerances, and the range of the operating environment. Higher input impedance, better stability and noise tolerance are also by-products of the circuit. From this analysis, a general logic family for high-speed computer applications may be derived.