Low Power Asynchronous UP Counter using CNTFET

In many applications counter is used to divide input clock to produce output, the frequency of the output is the divide by N times of the input clock frequency. Due to these reasons ripple counters can be used as frequency dividers to reduce a high clock frequency down to a more usable value for use in digital clocks and timing applications. In many applications such as ultra low power digital circuits, nano devices, wireless communication etc, designing of low power asynchronous counter is highly desirable. This paper presents the low power asynchronous counter using carbon nanotube field effect transistor, As far as it is known, this is the first attempt to design asynchronous counter using CNTFET. Results of the design are compared with CMOS technology based asynchronous counter.