Automotive chip provides unlimited short circuit protection

Alcatel has released a single chip LIN transceiver for today’s automotive In-Vehicle-Networking (IVN) requirements.

The transceiver chip, dubbed the MTC-30600, is designed to interface between a LIN protocol controller and the physical bus. The controller formats the LIN commands from the application software, and then routes this data to the bus, via the LIN transceiver.

The transceiver is implemented in Alcatel’s own I2T100 (BiMOS/CMOS/DMOS) technology – enabling both high voltage analog circuitry and digital functionality to co-exist on the same chip. The transceiver also provides unlimited short circuit protection in the event of a fault.

The LIN bus itself is designed to communicate low-rate data from control devices such as door locks, mirrors, car seats, and sunroofs at low cost. The bus is designed to eliminate as much wiring as possible and is implemented using a single wire in each node.

Each node – e.g., a door panel including door lock, window lift and mirror positioning – has a slave MCU-state machine that recognises and translates the instructions specific to that function, for example, winding a window up or down.

The main attraction of the LIN bus is that all the functions are not time-critical, and usually relate to passenger comfort. Typical applications for the LIN bus are assembly units such as doors, seats, climate regulation, lighting, rain sensor, or alternator.

Alcatel’s LIN transceiver samples are available today for customer evaluation. These devices can be used with Alcatel’s evaluation boards and software to demonstrate master & slave LIN functions and to verify the device functionality and behaviour under working conditions.

Volume shipments will commence in January 2002.