CAN transceiver features ±60V overvoltage fault protection

To protect bus pins during operation and shutdown, the device features ±60V overvoltage fault and ±25kV HBM ESD protection on the data transmission lines. Whether a circuit is transmitting, receiving or powered off, the transceiver tolerates any voltage within ±60V without damage.

CAN bus systems are becoming increasingly popular in industrial controls, instrumentation networks and automotive electronics. Featuring a well-defined protocol stack with support for standalone controllers, FPGAs and ASICs, the LTC2875 makes implementation easier. The device can be powered from a 3.3V or 5V rail, making it suitable for industrial applications where a 5V rail may not be present. Alongside the high fault and ESD protection, the transceiver features a low electromagnetic emission driver with a transmit data dominant timer to prevent faulty controllers from clamping the bus. To enable operation in electrically noisy environments and in the presence of ground loops, the LTC2875 is offered with an extended ±36V common mode range. The device provides a high speed data rate of 4Mb/s with an adjustable slew rate for data rates as low as 1kb/s. A shutdown mode brings all of the transceiver’s outputs to high impedance and reduces power consumption to 1µA.

The LTC2875 is available now in 3x3mm DFN-8 and SO-8 packages. Offered in commercial, industrial, automotive and military temperature grades, the device is priced from $1.72 each and sold in 1,000 piece quantities.