The PI6C2516 family is a low-skew, low jitter, phase-locked loop (PLL) clock driver, distributing high-frequency clock signals for SDRAM, server and networking applications. By connecting the feedback FB_OUT output to the feedback FB_IN input, the propagation delay from the CLK input to any clock output will be nearly zero. This zero-delay feature allows the CLK input clock to be distributed, providing 4 banks of four outputs.