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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 includes a control pin that can be

used to put the module regulator into Sleep mode. The presence of a

defined wake-up voltage level on the bus will reactivate the control line

to turn the regulator and the system back ON.

The device complies with the GMW3089v2.4 General Motors

Corporation specification.

Features

? 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