Description

The MC33388DR2 is a CAN physical interface device designed specifically for automotive body electronic multiplexing applications. It operates in differential mode, allowing ground shifts up to 1.5V to reduce RFI disturbances. With very low standby current in sleep and standby mode, it supports communication speeds up to 125kBauds. The device is fully protected against harsh automotive environments and has the ability to detect and handle fault conditions automatically. It continuously monitors bus failures and switches back to normal bus operation as soon as faults disappear.

Specifications and features

• Very low sleep/standby current (15mA typical)
• Baud rate from 10 kBaud up to 125kBauds
• Automatic switching to single wire mode in case of bus failures and return to differential mode if bus failures disappear
• Supports one wire transmission modes with ground offset up to 1.5V
• Internal bus driver slope control function to minimize RFI
• Bus line short-circuit protected to battery, VDD, and ground
• Bus line protected against automotive transients
• Thermal protection of bus line drivers
• Supports unshielded twisted pair bus
• An unpowered node does not disturb the bus lines
• Wake-up capability triggered from bus message and wake-up input pin
• Wake-up pin with dual edges sensitivity
• Battery fail flag reported on NERR output
• Ambient temperature range from -40°C to 125°C

Application Scenarios

The MC33388DR2 is widely used in automotive body electronic multiplexing systems. It is suitable for applications such as centralized control of lighting, windows, door locks, and other body-related functions in vehicles.

Comparison

• Fault-tolerant CAN interface for reliable communication
• Low standby current for energy efficiency
• Protection against harsh automotive environments
• Automatic detection and handling of fault conditions

• Limited to automotive body electronic multiplexing applications
• Specifically designed for differential mode communication