557G-03LFT – INTEGRATED DEVICE TECHNOLOGY

The 557G-03LFT from IDT is a low-power, spread-spectrum clock generator specifically designed for PCI Express applications. Housed in a 16-TSSOP package, this integrated circuit provides a highly stable and accurate clock source for PCIe Gen1, Gen2, and Gen3 implementations. It utilizes a phase-locked loop (PLL) to generate the required 100 MHz differential clock output, meeting the stringent jitter requirements of the PCI Express specification. The device incorporates spread spectrum clocking (SSC) functionality, which modulates the clock frequency to reduce electromagnetic interference (EMI) emissions. The 557G-03LFT operates from a 3.3V supply and features integrated termination resistors to minimize external component count. Its low-power design makes it suitable for power-sensitive applications.