DESCRIPTION

The DS1482 is a simple 1-Wire line driver with load sensor and level shifter, designed to function as an interface between a 3V host system and a 1-Wire system that runs on 5V. Two supplies are provided, a 5V supply for the 1-Wire operations (VCC) and an interface supply (VCCQ). The DS1482 can connect directly to a synchronous serial port if it supports the appropriate bit rates to generate 1-Wire timing.

FEATURES

◾ Works with All iButtons® and 1-Wire® Devices

◾ Communicates at Regular and Overdrive 1-Wire Speed (Host-Dependent)

◾ Separate Interface Power Supply to Level Shift to Non-5V Systems

◾ External Strong-Pullup Control Pin can be Used to Provide Low-On-Resistance-High Current Power Source

◾ Load Sensor to Detect when Strong-Pullup Power Delivery is no Longer Needed

◾ Power Delivery DONE Signal can be Connected to Host Interrupt

◾ Low-Cost 16-Pin SO Surface-Mount Package

◾ Operating Temperature Range: -40°C to +85°C