The MC33389 is a monolithic integrated circuit combining many functions frequently used by automotive ECUs. It incorporates a low speed fault tolerant CAN transceiver.

• Dual Low Drop Voltage Regulators, with Respectively 100mA and 200mA Current Capabilities, Current Limitation and Over Temperature Detection with Prewarning
• 5V Output Voltage for V1 Regulator
• Three Operational Modes (Normal, Standby and Sleep Mode) Separated from the CAN Interface Operating Modes
• Low Speed 125kBaud Fault Tolerant CAN Interface, Compatible with MC33388 Standalone Physical Interface
• V1 Regulator Monitoring and Reset Function
• Three External High Voltage Wake-up Inputs, Associated with V3 Vbat Switch
• 100mA Output Current Capability for V3 Vbat Switch Allowing Drive of External Switches or Relays
• Low Standby and Sleep Current Consumption
• Vbat Monitoring and Vbat Failure Detection Capabilities
• DC Operating Voltage up to 27V
• 40V Maximum Transient Voltage
• Programmable Software Window Watchog and Reset
• Wake up Capabilities (CAN Interface, Local Programmable Cyclic Wake up)
• Interface with MCU through SPI
• Programmable Interupt Function