Texas Instruments (USA) has released the the HVDA551-Q1 and HVDA553-Q1 high-speed CAN transceivers compliant with ISO 11898-2 and ISO 11898-5. They provide integrated ESD protection circuits, which reduce costs and saves space in ECU designs. Simulation models are available.
BY INTEGRATING POWERED ELECTROSTATIC DISCHARGE (ESD) protection of up to 8 kV for contact discharge and 15 kV for air discharge, the transceivers meet the requirements of US carmakers without the need for external protection diodes and common-mode choke. Applications in which these new devices may be used are automotive body-control modules, infotainment ECUs, and advanced driver assist systems (ADAS), vehicle gateway nodes as well as rear-view camera modules.
By using these components, engineers can eliminate the need for up to two external protection diodes per transceiver, which reduces overall system cost compared to existing CAN transceivers that require external protection diodes.
With ESD protection integrated into the transceivers, the products reduce the design space normally required for up to two external ESD protection diodes per CAN interface. This enables designers to create smaller boards that fit into space−constrained applications, such as in-vehicle gateway nodes and rear-view camera modules.
Designers have two transceiver choices to meet their system requirements, the HVDA551-Q1, with the ability to shift I/O level voltages; and the HVDA553-Q1 with a common- mode bus stabilization output. Both components also have under-voltage lock-out (UVLO) protection and dominant state timeout features. They are pin-to-pin compatible and available for immediate orders in an 8-pin SOIC package
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