AS8220

The AS8220 is a high-speed automotive bus driver according the FlexRay Electrical Physical Layer Specification V2.1 Rev B operating as bi-directional interface between the FlexRay Communication Controller and the twisted-pair copper wiring.

The AS8220 FlexRay Basis Transceiver provides a voltage monitoring circuitry, ensuring that the both input supply pins Vcc and Vio are correctly applied.

Ensuring application of AS8220in safety critical environments a one-wire bus-guardian interface is implemented where additional monitoring circuitries on the electronic-control-unit can activate and deactivate the transmitter.

All austriamicrosystems FlexRay Transceivers AS8220 provide an high-end diagnosis mechanism for the bus failure detection consisting of a high speed mechanism while comparing in transmitting mode the transmitter output with the receiving input signals and the highly accurate current measurement mechanism with measuring on both bus pins of AS8220 the current on the high and low side driver.

AS8220 is available in RoHS conform SSOP14 package.