U6268B

U6268B Side-Airbag Sensor Dual Interface Description The U6268B is an interface IC for remote automotive sensors. It links the crash sensors in the driver- and passenger door with the main airbag unit in the dashboard. Two identical channels supply the external sensors and receive digital information from them via one active wire each. The interface supplies the external sensors with a pre-regulated smoothed voltage, the external units transmit the digital information back to the interface by current modulation. As the device is for safety critical applications, highest data transmission security is mandatory. With high immunity against cross-coupling between the two channels, the U6228B is tailored for the harsh automotive environment. Features D Two identical interface channels D Provides a pre-regulated smoothed voltage and a supply current up to 50 mA for the sensors D TTL-compatible input activate the sensor D Data output can be directly connected to a microcontroller input D Receives data from the sensors by current modulation with a transmission rate of 60 kBaud (transmission bandwidth 500 kHz) D Operation supply voltage range 5.7 V method 3015.7 v V v 40 V S D ESD protection according to MIL-STD-883C test D High-level EMI protection D Current modulation provides high noise immunity for data transfer Benefits D Voltage supply and data transmission with one active wire over long distances Ordering Information Extended Type Number U6268B Package SO16 Remarks Bl...