Skyworks Solutions low-power HCSL output buffer architecture has clear advantages over older technology constant current mode technology. Skyworks Solutions PCIe devices not only provide up to 66% power savings, but they also reduce required component count per output. The benefits of low-power push-pull HCSL output drivers are threefold: More than 66% reduction in power consumption, which in turn presents operating cost reductions to end customers. A reduction in external components needed (Four resistors per output clock), plus an IREF resistor. Finally, smaller PCB footprint. The combination of small form factor packaging and elimination of external resistors equal smaller total PCB area needed. In addition, elimination of the external resistors enables layout of a clean transmission line from the output of the device to the input of the receiver, simplifying board design and eliminating discontinuities in the clock transmission line that can degrade signal integrity.