Clock buffers are not a specific brand but a category of electronic components used in digital systems to distribute clock signals with minimal skew and jitter. They are produced by various semiconductor companies worldwide, such as Texas Instruments (USA), ON Semiconductor (USA), and NXP Semiconductors (Netherlands). These components are critical in industries like telecommunications, computing, and consumer electronics, ensuring synchronization in high-speed circuits. Major products include low-skew clock buffers, zero-delay buffers, and fan-out buffers, often found in motherboards, networking equipment, and IoT devices.