ISO 11898-2 CAN repeater
with 4 kV galvanic isolation

The CAN-CR220 is used for the galvanic isolation of two segments of a CAN network and offers a very high galvanic isolation of 4 kV, allowing it be utilized in medical applications. One special feature of the Repeater is the automatic recognition and separation of a defective segment from the rest of the network so that the remaining network can continue working. After elimination of the defect, the segment is switched into the network again.

The galvanic isolation isolates the CAN segments from each other as well as from the power supply.

The CAN-CR220 is tested according DIN/EN 50178 (DIN VDE 0160: 1988-05 and DIN VDE 0160/A1: 1989-04).


Features and benefits

  • Line protection up to 4 kV
  • DIN/EN 50178 (DIN VDE 0160: 1988-05 and DIN VDE 0160/A1: 1989-04)
  • Cost savings due to simple wiring
  • Increased system reliability
  • Almost no influence on real-time behavior

Technical specifications

DisplayTransmit and defective segment (two duo LEDs), Power (one LED)
CAN bus interfaceISO 11898-2 with CAN choke. Two Sub-D9 connectors. CAN termination resistors are integrated (switchable).
BaudrateUp to 1 Mbit/s
Delay200 ns (corresponds ~40 m (~120ft.) bus length)
Power supply9-32 V DC, 1.5 W typ., through terminals
Galvanic isolationCAN 1, CAN 2 and power supply are galvanic isolated against each other.

Isolation voltage 1.01.0067.44400
2.0 kV AC / 1 min
3.2 kV DC / 1 min
3.5 kV AC / 1 sec
4 kV DC / 1 sec

Isolation voltage 1.01.0067.44300
3 kV AC / 3 min
3.75 kV AC / 1 min
4 kV DC / 1 min
4 kV AC / 1 sec
4 kV DC / 1 sec
CertificationCE, FCC
Temperature range-20 ºC … +70 ºC
HousingPlastic enclosure
Size22.5 x 100 x 115 mm

Contents of delivery

  • CAN-CR220
  • Quick reference

Order numbers

1.01.0067.44400CAN-CR220 (see technical data – galvanic isolation)
1.01.0067.44300CAN-CR220 (see technical data – galvanic isolation)

Learn more about the repeaters and see how they work

The lines coupled by the repeater are independent electric segments that can be optimally terminated in terms of signals. In this way topologies can be implemented that are not possible with a pure line of the bus due to electrical reflections. According to the transceiver output capacities, the division of a CAN / CAN FD system into several subsystems, connected via CAN / CAN FD repeaters, increases the maximum number of bus nodes. Using repeaters does not influence the real-time behavior of a system because in terms of transmission behavior it corresponds to a network that consists only of lines. In terms of signals, the repeater corresponds to a line with relevant delay time. Therefore, it cannot be used to extend a CAN / CAN FD system. However, using repeaters allows to increase the system dimensions indirectly, as shown in the sample.

Repeaters Data