Serial input data (BRin) must be faster than the desired output data
rate (BRout) based on the number of output bits (N) by this equation:
BRin (Mbps) = BRout (Mbps) × N
The clock input controls the rate
at which data is loaded into the shift register, Fclk (MHz) =
BRin (Mbps)
For more outputs, shift registers
can be daisy-chained together