... between Vth and leakage current. As a rule of thumb a 100mV reduction of the threshold voltage allows for a Vdd0,0E+005,0E-061,0E-051,5E-052,0E-052,5E-053,0E-053,5E-05reg-Vt low-Vt 200mV ... Table 1-1 the key transistor parameters of our ultra-low-Vth FETs (ulv) and of the standard low-Vth transistor are listed. The Vth values are 165mV and 161mV for the ulv-NFET and ulv-PFET ... levels in the design flow and to future work. Keywords: Low -power design, dynamic power reduction, leakage power reduction, ultra-low-Vth devices, multi-Vdd, multi-Vth, CVS 1.1 INTRODUCTION...