The Ixxat CAN-CR300 repeater with 4 CAN/CAN FD interfaces improves the CAN bus load capacity, establishes a physical coupling of bus systems, and offers galvanic isolation. The flexibility to optimize network structures frees them from CAN bus structure constraints by enabling extended layouts (stub lines, star and tree topologies).

The device can be purchased with or without integrated bus termination resistors. With the termination option (120 Ohm, switchable via DIP switch), the termination resistors prevent reflections on the line ends and ensure optimum communication.

It's designed for industrial environments by meeting high demands for robustness, temperature ranges, and safety. With its fast and transparent operation, there is minimal impact on real-time behavior equivalent to a short line length (ca. 35 m/175 ns delay). With transparent transmission, the repeater is compatible with all higher layer protocols.

Network Reliability

The CAN-CR300 ensures system reliability by electrically isolating CAN/CAN FD segments and power which auto-separates network faults and keeps the network operational. In case of disturbances in the CAN lines, the repeater automatically disconnects the affected segment and restores it after the fault is resolved, ensuring uninterrupted network operation. Network components can be galvanically isolated up to 1 kV. This reliably enhances the protection of the device against damage to electronics caused by voltage peaks.

Combined CAN and CAN FD interfaces in 1 device.

Equipped with 4 CAN/CAN FD channels, the CAN-CR300 can be used to establish a physical coupling and galvanic isolation of two segments of both CAN and CAN FD bus systems.

Application Sample

CAN repeaters can be used to better adapt the cable routing to ambient conditions. Stub lines can be made, and the bus structure can be expanded to a star/tree structure, which saves cable lengths. Shorter cable lengths reduce interference on the signal lines and enable higher bit rates. Segments connected via repeaters are galvanically decoupled, and therefore, offer overvoltage protection for connected participants. 

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