TH8080 Просмотр технического описания (PDF) - Melexis Microelectronic Systems

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TH8080

SoloLIN Transceiver

Melexis Microelectronic Systems  

TH8080

SoloLIN Transceiver

4. Operating under Disturbance

4.1 Loss of battery

If the ECU is disconnected from the battery, the bus pin is in high impedance state. There is no impact to the

bus traffic and to the ECU itself.

4.2 Loss of Ground

In case of an interrupted ECU ground connection there is no influence to the bus line.

4.3 Short circuit to battery

The transmitter output current is limited to the specified value in case of short circuit to battery in order to

protect the TH8080 itself against high current densities .

4.4 Short circuit to ground

If the bus line is shorted to negative shifted ground levels, there is no current flow from the ECU ground to

the bus and no distortion of the bus traffic occurs.

4.5 Thermal overload

The TH8080 is protected against thermal overloads. If the chip temperature exceeds the specified value, the

transmitter is switched off until thermal recovery. The receiver is still working while thermal shutdown.

4.6 Undervoltage Vcc

If the ECU regulated supply voltage is missing or decreases under the specified value, the transmitter is

switched off to prevent undefined bus traffic.

TH8080 – Datasheet

3901008080

Page 12 of 23

July 2004

Rev 006

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