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.
Features
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Waveshaping for low Electromagnetic Interference (EMI)
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Detects and automatically handles loss of ground
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Worst-case Sleep mode current of only 60 μA
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Current limit prevents damage due to bus shorts
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Built-in thermal shutdown on bus output
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Protected against vehicular electrical transients
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Under-voltage lockout prevents false data with low battery
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