The 33790 is a two-channel physical layer interface IC for the Distributed System Interface (DSI) bus. It is designed to meet automotive requirements. It can also be used in nonautomotive applications. It supports bidirectional communication between slave and masterICs. Some slave devices derive a regulated 5.0 V from the bus, which can be used to power sensors, there by
eliminating the need for additional circuitry and wiring.

FEATUREs
• Two Independent DSI Compatible Busses
• Pinout Matched to MC68HC55 (SPI to DSI Logic)
• Wave-Shaped Bus Output Voltage
• Independent Thermal Shutdown and Current Limit
• Return Signalling Current Detection
• Internal Logic Input Pull-Ups and Pull-Downs
• On-Board Charge Pump
• 2.0 kV ESD Capability
• Communications Rate Up to 150 kbps
• Motorola now offers Pb-free packages with sufix code EG