PLL-based clock distribution in a 16-SOIC footprint
The Cypress W152-12GT is a PLL-based Zero Delay Buffer from the Spread Aware™ series, designed to regenerate a clean, phase-aligned clock output from a potentially noisy input. It accepts a single-ended clock input and fans it out to eight outputs (1:8 ratio) at frequencies up to 140 MHz, making it a fit for distributing reference clocks across a PCB without adding skew or jitter. The part operates from a 2.97V to 3.63V supply and is specified over the commercial temperature range of 0°C to 70°C, which suits indoor, temperature-controlled equipment such as networking gear, servers, and test instrumentation.
The 140 MHz maximum frequency covers common clock rates for Ethernet PHYs (125 MHz), DDR memory interfaces (133 MHz), and PCIe reference clocks (100 MHz). The 1:8 fanout lets one oscillator or crystal feed up to eight downstream loads without needing a separate buffer tree, reducing BOM count and PCB area. The PLL inside the W152-12GT cleans up jitter from the input and locks the output phase to the input, so the eight outputs maintain low skew relative to each other — important for synchronous designs where clock distribution delay must match across multiple devices.
Supply voltage and temperature — fit for the environment
The 2.97V to 3.63V supply range aligns with standard 3.3V logic rails, with enough margin to ride through a 5% drop without losing PLL lock. If the design lives in a server rack or a lab instrument, this part is right at home.