| 摘要 |
The invention relates to an interface circuit, comprising:
- an input terminal (14) for supplying an input signal (Vin),
- a controlled current sink (11), which is connected to the input terminal (14) and takes up a current from the input terminal (14) according to a transmission signal (S10),
- a current measurement arrangement (12), which determines a current taken up by the current sink and furnishes a current measurement signal (S12) depending on this determined current,
- a logic circuit (13), to which the current measurement signal and the input signal (Vin) are taken and which produces a signal (Sout) depending on the input signal (Vin).
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