The I-7531 is a “CAN repeater” solution proposed by ICP DAS. It is used to establish a physical coupling of two or more segments of a CAN bus system. Tree or star topologies can be implemented by using I-7531. Moreover, it extends drop line distance so that more CAN devices can be added on the branch. Through I-7531, users can isolate the noise or disturbances between two different CAN network to avoid the surge damage on these CAN network.

• Operating temperature: -25°C to + 75°C
• Humidity: 5% ~ 95%
• Photo-coupler isolation between 2 CAN port: 2500 Vrms
• 3KV galvanic isolation between the power supply and 2 CAN ports
• Support CAN 2.0A/CAN 2.0B
• Fully compatible with the ISO 11898-2 standard
• Communication baud rate range : 10Kbps ~ 1Mbps
• Removable terminal block
• Mountable on DIN Rail
• Bus pins protected against transients in an industrial environment
• No disturbance of the bus lines with an un-powered node
• Transmit data (TxD) dominant time-out function prevents the output drivers from driving a permanent dominant state.
• A thermal protection circuit is integrated to prevent the transceiver from damage if the junction temperature exceeds thermal shutdown level.
• CAN terminal resistors are integrated (can be disabled by jumper)

For more information, please refer to
http://www.icpdas.com/products/Remote_IO/can_bus/I-7531.htm