Dual DBUS Leader, Differential Drive, Frequency Spread

MC33780

The NXP® MC33780 is a leader device for two differential DBUS buses. It contains the logic to interface the buses to a standard serial peripheral interface (SPI) port and the analog circuitry to drive data and power over the bus as well as receive data from the remote follower devices.

  • The differential mode of the MC33780 generates lower electromagnetic interference (EMI) in situations where data rates and wiring make this a problem
  • Frequency spreading further reduces interference by spreading the energy across many channels, reducing the energy in any single channel

Product Details

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Features

  • Two Independent DBUS I/Os
  • Common SPI Interface for All Operations
  • Open-Drain Interrupt Output with Pull-up
  • Maskable Interrupts for Send and Receive Data Status
  • Automatic Message Cyclical Redundancy Checking (CRC)
  • Generation and Checking
  • Four-Stage Transmit and Receive Buffers
  • 8- to 16-Bit Messages with 0- to 8-Bit CRC
  • Independent Frequency Spreading for Each Channel

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