DS2482S-100+

DS2482S-100+ is a single-channel 1-wire host. It is an I²C-to-1-Wire® bridge device that interfaces directly to standard (100KHz max) or fast (400KHz max) I²C hosts to perform bidirectional protocol conversion between the I²C host and any downstream 1-wire server devices. 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 DS2482-100 performs slew-rate control on rising and falling 1-wire edges and provides additional programmable features to match drive characteristics to the 1-wire server environment. Programmable, strong pullup features support 1-wire power delivery to 1-wire devices such as EEPROMs and sensors. Typical applications include printers, industrial sensors, medical instruments, cell phones, and PDAs.

• Allows easy interface between a I²C microport and a 1-wire server
• 1-wire host IO with selectable active or passive 1-wire pullup
• Provides reset/presence, 8-bit, single-bit, and 3-bit 1-wire IO sequences
• Standard and overdrive 1-wire communication speeds
• Two address inputs for I²C address assignment
• Minimizes line noise reducing system EMI, slew-controlled 1-wire edges
• Supply voltage range from 2.9 to 5.5V at TA=-40°C to +85°C
• Operating current is 0.75mA maximum at TA=-40°C to +85°C
• 8 SO package
• Temperature range from -40°C to +85°C

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