LIN transceiver powers up slave nodes

A novel LINbus transceiver IC with an onboard voltage regulator provides a 5V DC supply, allowing the development of simple, inexpensive slave nodes in a LINbus system.

A novel LINbus transceiver IC with an onboard voltage regulator provides a 5V DC supply, allowing the development of simple, inexpensive slave nodes in a LINbus system.

The new A8423 provides all the physical interface requirements of the LIN (Local Interconnect Network) serial communications bus.

The integrated voltage regulator, which is permanently enabled, provides a regulated 5V output with a current limit of more than 50mA - sufficient to power a microcontroller handling the LIN slave node protocol.

The LIN transceiver is compatible with LINbus systems conforming to the LIN Protocol Specification, Revision 1.2.

It provides all the necessary interface and timing control to convert signals to and from the bidirectional LINbus to individual transmit and receive signals at logic-compatible levels.

Normal operation is over the voltage range 7-30V.

The device will handle 40V transients during a load dump, and it meets the requirements of ISO7637 for handling automotive transients.

ESD protection to 4kV is provided on the LIN and "wake" pins.

It is supplied in an 8-pin small-outline surface-mount package.

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