DS2482S-800+ Datasheet PDF - Maxim Integrated

The DS2482S-800+ is an 8 channel 1-Wire master in 16 pin SOIC package. This I2C to 1-Wire bridge device interfaces directly to standard (100KHz maximum) or fast (400KHz maximum) I2C masters to perform bidirectional protocol conversion between I2C master and any downstream 1-Wire slave devices. Internal factory trimmed timers relieve 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 DS2482-800 performs slew rate control on rising and falling 1-Wire edges and has programmable feature to mask fast presence pulse edge that some 1-Wire slave devices can generate. Programmable strong pull-up features support 1-Wire power delivery to 1-Wire devices such as EEPROMs and sensors. The DS2482-800 combines these features with eight independent 1-Wire I/O channels.

● Minimizes line noise by reducing system EMI

● Wide operating range from 2.9V to 5.5V

● 1-wire master I/O with selectable active or passive 1-wire pull-up

● Provides reset/presence, 8bit, single bit and 3bit 1-wire I/O sequences

● Three address inputs for I2C address assignment

● Strong 1-wire pull-up provided by an internal low impedance signal path

● PCTLZ output to optionally control an external MOSFET for stronger pull-up requirements

● Operating current of 0.75mA

● Operating temperature range from -40 to 85°C