DS2482S-100+T&R Datasheet PDF - Maxim Integrated

●The DS2482S-100+T&R is a single channel 1-wire master in 8 pin NSOIC package. It is an I2C to 1-wire bridge device that interfaces directly to standard (100KHz) or fast (400KHz) I2C masters to perform bidirectional protocol conversion between I2C master and any downstream 1-wire slave devices. Relative to any attached 1-wire slave device, the DS2482-100 is a 1-wire master. The 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 DS2482-100 performs slew rate control on rising and falling 1-wire edges. Programmable, strong pull-up features support 1-wire power delivery to 1-wire devices such as EEPROMs and sensors. The device combines these features with an output to control an external MOSFET for enhanced strong pull-up application.

● Supply voltage range from 2.9V to 3.7V (3.3V) and 4.5V to 5.5V (5V)

● Operating temperature range from -40°C to 85°C

● 1-wire master IO with selectable active or passive 1-wire pull-up

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

● Standard and overdrive 1-wire communication speeds

● Two address inputs for I2C address assignment

● Minimizes line noise reducing system EMI

● 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 and power-on reset trip point of 2.2V