MC33790: Two Channel DSI Physical Interface for Bus Leaders ARCHIVED

Overview

Archived content is no longer updated and is made available for historical reference only.

The MC33790 is a dual channel physical layer interface IC for the Distributed Systems Interface (DSI) bus. It connects DSI leaders to DSI follower sensors and actuators. It provides power to the follower sensors and actuators over the DSI Bus and supports bidirectional communication between the follower and leader ICs over this same bus wire. When used with other DSI family parts, remote sensing and control can be easily and inexpensively accomplished. Up to 30 remote devices can be supported by single MC33790. The MC68HC55 is an SPI to DSI protocol converter, which is made to match the pin connections of the MC33790 and allow any MCU with an SPI to generate a DSI Bus.

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Features

Complete power source, transmitter, and receiver for two independent DSI buses

Waveshaped voltage mode transmitter (reduced EMI)

Pinout matched to MC68HC55 for easy PCB layout

Independent 150 mA current limit per channel output

Logic input thresholds are 3.3 V and 5.0 V compatible