SPDIF transceivers are not a specific brand but a category of devices used in digital audio signal transmission. These transceivers are developed by various electronics manufacturers worldwide, including companies like Texas Instruments (USA), Cirrus Logic (USA), and Analog Devices (USA). They serve the professional audio, consumer electronics, and broadcasting industries, enabling high-quality digital audio transfer via the Sony/Philips Digital Interface (SPDIF) standard. Key products include SPDIF transceiver ICs, optical and coaxial interface modules, and integrated audio codecs with SPDIF support.