Data Sheet

29

Rev. 1.2, 2007-11-13

TLE7269G

Application Information

7.3

Master Termination

To achieve the required timings for the dominant to recessive transition of the bus signal an additional external

termination resistor of 1 k

Ω is mandatory. It is recommended to place this resistor at the master node. To avoid

reverse currents from the bus line into the battery supply line it is recommended to place a diode in series with the

external pull-up. For small systems (low bus capacitance) the EMC performance of the system is supported by an

additional capacitor of at least 1 nF at the master node (see Figure 17 and Figure 18).The values for the Master

Termination resistor and the bus capacitance influence the performance of the LIN network. They depend on the

number of nodes inside the LIN network and on the parasitic cable capacitances of the LIN bus wiring.

7.4

External Capacitors

A capacitor of 10

reverse polarity diode this prevents the device from detecting a power down conditions in case of negative

transients on the supply line (see Figure 17 and Figure 18).

The 100 nF capacitor close to the

V

to get the best EMC performance.