The 33897 series provides a physical layer for digital communication using a Carrier Sense Multiple Access/Collision Resolution (CSMA/CR) data link operating over a single wire medium. This is more commonly referred to as single-wire Controller Area Network (SWCAN). The 33897 series operates directly from a vehicle's 12 V battery system or a broad range of DC-power sources. It can operate at low or high (33.33 kbps or 83.33 kbps) data rates. A high-voltage wake-up feature allows the device to control the regulator used in support of the MCU and other logic. The device complies with the GMW3089v2.4 General Motors Corporation specification.
Waveshaping for low Electromagnetic Interference (EMI)
Detects and automatically handles loss of ground
Worst-case Sleep mode current of only 60 μA
Current limit prevents damage due to bus shorts
Built-in thermal shutdown on bus output
Protected against vehicular electrical transients
Under-voltage lockout prevents false data with low battery