What the W164G is and where it fits
The W164G is a spread spectrum clock generator with an integrated PLL, designed to reduce electromagnetic interference (EMI) by modulating the output clock frequency over a narrow band. It accepts either a crystal or a clock input and produces up to thirteen clock outputs from a single reference, covering three maximum output frequencies: 14.318 MHz, 24 MHz, and 48 MHz. The part contains two independent PLL circuits, allowing separate clock domains — for example, one PLL can generate a 48 MHz MCU clock while the other produces a 14.318 MHz video clock — all from one crystal. Typical applications include desktop and notebook PCs, peripherals, set-top boxes, and any digital system where conducted or radiated EMI must be attenuated without adding shielding or ferrites. The commercial temperature range (0°C to 70°C) limits it to indoor, non-extreme environments; it is not rated for automotive or industrial extended-temperature use.
Package and mounting
The 28-SOIC wide-body package (0.295" body width, 7.50 mm) is common among clock generators; verify board layout accommodates the 7.50 mm width.