GENERAL DESCRIPTION

The PCA82C252 is the interface between the CAN protocol controller and the physical bus. It is primarily intended for low-speed applications, up to 125 kBaud, in passenger cars. The device provides differential transmit capability but will switch in error conditions to a single-wire transmitter and/or receiver.

FEATURES

Optimized for in-car low-speed communication

• Baud rate up to 125 kBaud

• Up to 15 nodes can be connected

• Supports unshielded bus wires

• Low RFI due to built-in slope control function

• Fully integrated receiver filters.

Bus failure management

• Supports one-wire transmission modes with ground offset voltages up to 1.5 V

• Automatic switching to single-wire mode in the event of bus failure

• Automatic reset to differential mode if bus failure is removed.

Protection

• Short-circuit proof to battery and ground in 12 V powered systems

• Thermally protected

• Bus lines protected against transients in an automotive environment

• An unpowered node does not disturb the bus lines.

Support for low-power modes

• Low current sleep/standby mode with wake-up via the bus lines

• Power-on reset flag on the output.