ICS87931I

The ICS87931I is a low voltage, low skew LVCMOS/LVTTL Clock Multiplier/Zero Delay Buffer and a member of the HiPerClockS™ family of High Performance Clock Solutions from ICS. With output frequencies up to 150MHz, the ICS87931I is targeted for high performance clock applications. Along with a fully integrated PLL, the ICS87931I contains frequency configurable outputs and an external feedback input for regenerating clocks with "zero delay". Selectable clock inputs, CLK1 and differential CLK0, nCLK0 support redundant clock applications. The CLK_SEL input determines which reference clock is used.

The output divider values of Bank A, B and C are controlled by the DIV_SELA, DIV_SELB and DIV_SELC, respectively. For test and system debug purposes, the PLL_SEL input allows the PLL to be bypassed. When LOW, the nMR input resets the internal dividers and forces the outputs to the high impedance state.

The effective fanout of the ICS87931I can be increased to 12 by utilizing the ability of each output to drive two series terminated transmission lines.