A novel low-power and high-speed dual-modulus prescaler based on extended true single-phase clock logic

A novel low-power and high-speed dual-modulus prescaler based on extended true single-phase clock (E-TSPC) scheme is presented. By restricting the short-circuit current in noncritical branchs, the design reduces the major source of power dissipation in E-TSPC scheme. The presented design enhances the maximum working frequency with shorter critical path and lower load capacitances. Simulation results in SMIC 40nm process show that compared with referenced E-TSPC based designs at least 61.2% (divide-by-2) and 41.1% (divide-by-3) reduction in power delay product (PDP) can be achieved by the proposed design.