In the mid-1980s, faster CMOS variants, using similar HMOS process technology, such as Intel's CHMOS I, II, III, IV, etc. started to supplant n-channel [[HMOS]] for applications such as the [[Intel 80386]] and certain [[microcontroller]]s. A few years later, in the late 1980s, [[BiCMOS]] was introduced for high-performance microprocessors as well as for high speed [[analog circuit]]s. Today, most digital circuits, including the ubiquitous [[7400 series]], are manufactured using various CMOS processes with a range of different topologies employed. This means that, in order to enhance speed and save die area (transistors and wiring), high speed CMOS designs often employ other elements than just the [[:wikt:complementary|complementary]] ''[[CMOS|static]]'' [[logic gate|gate]]s and the [[transmission gate]]s of typical slow low-power CMOS circuits (the ''only'' CMOS type during the 1960s and 1970s). These methods use significant amounts of [[dynamic logic (digital logic)|dynamic]] circuitry in order to construct the larger building blocks on the chip, such as latches, decoders, multiplexers, and so on, and evolved from the various dynamic methodologies developed for pMOS and nMOS circuits during the 1970s.
