ICS557-03

Stresses above the ratings listed below can cause permanent damage to the ICS557-03. These ratings are stress ratings only. Functional operation of the device at these or any other conditions above those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods can affect product reliability. Electrical parameters are guaranteed only over the recommended operating temperature range.

The ICS557-03 is a spread spectrum clock generator supporting PCI-Express and Ethernet requirements. The device is used for PC or embedded systems tosubstantially reduce electromagnetic interference (EMI). The ICS557-03 provides two differential (HCSL) spread spectrum outputs. This device is pin configured to select spread and clock selection. Using ICS' patented Phase-Locked Loop (PLL) techniques, the device takes a 25 MHz crystal input and produces two pairs of differential outputs (HCSL) at 25 MHz, 100 MHz, 125 MHz and 200 MHz clock frequencies. It also provides spread selection of ±0.25%, -0.5%, -0.75%, and no spread.