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MLX90109 - 125kHz RFID Transceiver
AN6532 - 125kHz Asynchronous Step-Down Converter
AN6533 - 125kHz Asynchronous Step-Down Converter
NJU6515 - 10ch.1L / Interface System Clock(fosc/30-fosc/25KHz)
ATA5580 - The AES 125kHz Transponder