The DS2482-101 is an I²C-to-1-Wire bridge device that interfaces directly to standard (100kHz max) or fast (400kHz max) I²C masters to perform bidirectional protocol conversion between the I²C master and any downstream 1-Wire slave devices. Relative to any attached 1-Wire slave device, the DS2482-101 is a 1-Wire master. Internal, factory-trimmed timers relieve the system host processor from generating time-critical 1-Wire waveforms, supporting both standard and overdrive 1-Wire communication speeds. To optimize 1-Wire waveform generation, the DS2482-101 performs slew-rate control on rising and falling 1-Wire edges and provides additional programmable features to match drive characteristics to the 1-Wire slave environment. Programmable, strong pullup features support 1-Wire power delivery to 1-Wire devices such as EEPROMs and sensors. The DS2482-101 combines these features with an output to control an external MOSFET for enhanced strong pullup application. The I²C slave address assignment is controlled by one binary address input, resolving potential conflicts with other I²C slave devices in the system. When not in use, the device can be put in sleep mode where power consumption is minimal.

Applications

• Cell Phones/PDAs
• Industrial Sensors
• Medical Instruments
• Printers