Austriamicrosystems' new AS8222 transceivers provide the interface between the digital logic and the FlexRay copper cable transmission lines. With transmission rates up to 10 Mbit/s, FlexRay provides 20 times the speed of the unshielded twisted copper cable used in cars today. The chip is a single FlexRay transceiver with a battery supply connection and FlexRay bus wake-up functionality. It conforms to the FlexRay standard v2.1 rev B. The device provides various bus and failure diagnostics, making it suited for high-speed automotive bus systems and safety-critical applications, the vendor promises.
The company also claims the chip shows excellent electromagnetic immunity in network designs with high robustness against external disturbances. Safety and protection features of the AS8222 FlexRay transceiver include an optional interface for a two-wire bus-guardian or supervision circuits, automatic thermal shutdown protection and short circuit protection. Support for 12 and 24 V operating voltage simplifies designing with the product. In addition, it is compatible with a wide range of microcontrollers running at 2.5, 3, 3.3, and 5 V.
The first customer project with the AS8222 will move into mass production by end of 2012.
The AS8222 FlexRay transceiver is available in an SSOP20 package with an ambient temperature range of -40 to +150 °C. For added flexibility, it is also available as bare dice with a temperature range of -40 to 165°C.
Further information is available at www.Austriamicrosystems.com/FlexRay/AS8222.