The DS2480 is a serial port to 1Wire interface chip that supports standard and Overdrive speeds. It connects directly to UARTs and 5V RS232 systems. Interfacing to RS232C ( 12V levels) requires a passive clamping circuit and one 5V to 12V level translator. Internal timers relieve the host of the burden of generating the time critical 1Wire communication waveforms. In contrast to the DS9097(E) where a full character must be sent by the host for each 1Wire time slot, the DS2480 can translate each character into eight 1Wire time slots thereby increasing the data throughput significantly. In addition, the DS2480 can be set to communicate at four different data rates including 115.2 kbps, 57.6 kbps and 19.2 kbps with 9.6 kbps being the poweron default.