Digital isolators are a category of components used in industrial and electronic applications, not a specific brand. They are produced by various companies worldwide, including Analog Devices (USA), Texas Instruments (USA), and Silicon Labs (USA). These devices provide galvanic isolation to protect sensitive circuits from high voltages and noise, commonly used in power supplies, motor controls, and communication systems. Key products include optocoupler replacements, capacitive isolators, and magnetic isolators, serving industries like automotive, healthcare, and industrial automation.