Airbag Power Supply and PSI5 Sensor Interface

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Block Diagram

Freescale MC33789 Network Transceivers Block Diagram

NXP<sup>&#174;</sup> MC33789 Network Transceivers Block DiagramV


  • Designed to operate 5.2 V ≤ VPWR ≤ 20 V, up to 40 V transients
  • Safing state machine with programmable sensing thresholds
  • Two configurable high side/low side drivers with PWM capability
  • Four PSI5 satellite sensor leader interfaces
  • Self-protected and diagnostic capability
  • System power mode control with watchdog and system Power On Reset (POR)
  • Supports complete airbag system power supply architecture, including system power mode control, supplies for squib firing (33 V), satellite sensors (6.3 V), and local ECU sensors and ECU logic circuits (5.0 V)
  • Nine configurable switch input monitors for simple switch and Hall-effect sensor interfaces
  • 16-bit SPI interface
  • LIN 2.1 physical layer interface

Part numbers include: MCZ33789AE, MCZ33789BAE.


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