en 2-Integrated Circuits: Digital, Analog Integrated Circuits: Digital, Analog Research Paper Research Paper <div style="text-align: justify;"><span style="color:#000000;"><span style="font-size:12px;"><span style="font-family:tahoma;">This work studies the effects of dynamic threshold design techniques on the speed and power of digital circuits. A new dynamic threshold transistor structure has been proposed to improve performances of digital circuits. The proposed switched-capacitor dynamic threshold PMOS (SC-DTPMOS) scheme employs a capacitor along with an NMOS switch in order to effectively reduce the threshold voltage of a PMOS transistor. The proposed structure improves the propagation delay of a circuit and is much suitable for those circuits with high switching factor. Post layout simulation results using TSMC 180&nbsp;nm CMOS technology at 0.2V supply voltage shows 45% improvement in delay as well as 25% less power consumption at the cost of only 53% more occupied area.</span></span></span></div> Low Power,High Speed,Sub-Threshold,Body Biasing,Dynamic Threshold, 170 177 http://ijeee.iust.ac.ir/browse.php?a_code=A-10-2275-1&slc_lang=en&sid=1 M. Ashraf m.r.ashraf@shahroodut.ac.ir 180031947532846006439 180031947532846006439 Yes Faculty of Electrical Engineering and Robotics, Shahrood University of Technology, Shahrood, Iran.