What are the key differences between CAN and CAN-FD?

CAN-FD (Flexible Data-rate) extends classical CAN with: Higher data rate (up to 8 Mbps in data phase vs 1 Mbps), larger payload (up to 64 bytes vs 8 bytes), and improved error detection (CRC-21 vs CRC-15). CAN-FD uses dual bit rate - standard rate for arbitration maintaining compatibility, higher rate for data transmission. This addresses growing bandwidth needs while maintaining CAN's proven robustness. CAN-FD nodes can coexist with classical CAN nodes if operating in classical mode. CAN-FD is widely adopted for powertrain and chassis applications requiring more bandwidth.