System Basis Chip with DC/DC and Multiple Switch-to-Ground Interface

The MC33909 product family has been withdrawn and as replacement products, NXP recommends using the UJA113x system basis chip series.

The NXP^® MC33909 IC integrates the functionality of system basis chips with 16 switch detection inputs and works as an advanced power management unit for the MCU and additional integrated circuits such as sensors, CAN transceivers, and eXtreme switches.

• One built-in enhanced high-speed CAN interface (ISO 11898-2 and -5), with local and bus failure diagnostics, protection and fail-safe operation mode
• The IC can be programmed to wake up when a change of state is detected on any input
• Supply configurable pulsed wetting current with low sustain current levels for improved thermal The device also implements an innovative and advanced fail-safe state machine and safety concept solution