The AS8221 from austriamicrosystems is a FlexRay standard transceiver which is certified to the latest FlexRay Standard V2.1 Rev B. This semiconductor device acts as the interface between digital logic and copper cable transmission for the next generation of automotive networks. While the device is only fed by the car battery, it provides wake-up functionality via the network and is therefore responsible for controlling the local voltage supply. Another safety feature of the AS8221 is its interface to optionally monitor circuits (eg, bus guardian), which can, in safety-critical applications, uncouple the control unit from the communication network in case of a fault, thus ensuring communication across the remaining network. The chip is suitable for automotive applications with temperatures ranging from -40°C to 125°C and is available in an RoHS compliant SSOP20 package.
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