ARINC 825 compliant CAN transceiver for avionics applications introduced by Holt Integrated Circuits

Posted by John McHale
MISSION VIEJO, Calif. 19 Feb. 2011. Holt Integrated Circuits introduced HI-3000, an ARINC 825/ISO 11898-5 compliant controller area network (CAN) transceiver, designed specifically for the avionics market. The rugged design is short circuit protected to +/- 58 volts on the bus lines and is capable of operating in the temperature range -55 to 125 degrees Celsius.
CAN devices have become a popular data bus solution in the avionics industry since the release of the ARINC 825 specification in November 2007, which standardized the use of CAN in avionics applications, Holt officials say.

The HI-3000 supports two modes of operation -- normal mode and standby mode. The standby mode is a very low-current mode which continues to monitor bus activity, allowing the external controller to manage wake-up. Superior common-mode receiver performance makes the device especially suitable for applications where ground reference voltages may vary from point to point over long distances along the CAN bus. In addition, the HI-3000 provides a SPLIT pin to give an output reference voltage of VDD/2, which can be used for stabilizing the recessive bus level when the split termination technique is used to terminate the bus.
The device also features a TXD dominant time-out feature to protect the bus from being driven into a permanent dominant state if the TXD pin becomes permanently low due to application failure. This feature is mandated as part of the ARINC 825 specification.
The HI-3001 is identical to the HI-3000 except the SPLIT pin is substituted with a VIO supply voltage pin. This allows the HI-3001 to interface digital I/O directly with 3.3V controllers. Both the HI-3000 and HI-3001 are offered in an 8-pin SOIC package. The HI-3002 provides both the SPLIT and VIO supply voltage pins in a compact 16-pin QFN package.
For more information contact Holt at 949-859-8800, by e-mail at info@holtic.com, or visit www.holtic.com.


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