High speed divide by 3/4 prescaler using NMOS like latch block

Abstract

A new design technique for 3/4 prescaler that improves operating speed and area is presented. The TSPC based 3/4 prescaler, an NMOS like p and n latch block reduces number of transistors and increases the speed of the 3/4 prescaler. The proposed 3/4 prescaler design can increase operation speed by 18% compared to a 3/4 prescaler design [11] with a 1. SV supply in 180nm CMOS technology. The proposed divide by 5/6 prescaler using the proposed 3/4 prescaler achieves 9.61/9.8 GHz operating frequency with a power consumption of 5.63 mW in divide by five mode and 5.42 mW in divide by six mode.