CAN ESD protection devices comply with all key interfaces

8th July 2015

Nat Bowers

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Datasheet

The continual introduction of new electronics-based features in cars, including various ADAS, has led to a proliferation of communications protocols that offer different combinations of speed, cost and flexibility. STMicroelectronics has introduced two devices that combine superior protection of CAN bus lines against ESD and other transients with unique compliance for all key automotive interfaces.

The ESDCAN02-2BWY and ESDCAN03-2BWY are automotive-grade dual-line Transil devices that leverage ST’s leadership in transient protection devices and its understanding of the automotive market. The unique combination of parameters, including an ultra-low capacitance of 3.5pF and 24V minimum stand-off voltage, has produced the world’s first CAN protection devices to comply with all major interfaces, including CAN-FD, LIN, FlexRay, MOST and SENT. The low capacitance enables a reduction in BOM and design simplification for high bit-rates.

The ESDCAN02-2BWY features a minimum breakdown voltage of 28V, which meets automotive reverse battery requirements. The ESDCAN03-2BWY’s very low maximum clamping voltage of 35V is claimed to be the best clamping voltage on the market.

Both devices are ISO10605-compliant, managing ESD surges up to the maximum ±30kV covered by the standard, ensuring robustness in the application. Both devices are supplied in an ultra-compact SOT323-3L package which helps minimise PCB area.

The devices are available for $0.078 in 100 unit quantities.