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Isolated transceivers

Fault-protection enables robust communication

The MAX14878, MAX14879, and MAX14880 are isolated CAN transceivers. They provide fault‑protection, which enables robust communication.

The company Digikey sells the transceivers, for example the shown MAX14878 (Photo: Digikey)

The products compliant with ISO 11898-2 improve reliability by integrating galvanic isolation between the CAN controller output and the transceiver input. Isolation improves communication by breaking ground loops and reduces noise where there are large differences in ground potential between ports. The MAX14879 provides up to 2,75-kVRMS of galvanic isolation, while the MAX14878 and MAX14880 provide up to 5-kVRMS.

Interfacing with CAN controller is enabled by the 1,71-V to 5,5-V supply voltage range on the controller side of the device. The receiver input common-mode range is ±25 V, exceeding the ISO 11898-2 specification of -2 V to +7 V, and is tolerant up to ±54 V. Driver outputs/receiver inputs are also protected from ±15‑kV electrostatic discharge to GND on the bus side.

The MAX14879 and MAX14880 chips feature an integrated standby input on the isolated side of the transceiver to disable the driver and place the transceiver in a low-power standby mode. The MAX14878 does not include the standby input. The transceivers operate up to a data rate of 1 Mbit/s and are available in a 16-pin Small Outline Integrated Circuit package with 8 mm of creepage and clearance. This family can operate over the -40 °C to +125 °C temperature range. Application areas of the transceivers include building automation, industrial controls, and switching gear.

cw



Publish date
2017-12-14
Company

Maxim
Digikey

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