Data transmission device with differential data transmission link
The invention relates to a data transmission device with at least one supply voltage (UB), a transmitter (11), a receiver (13) and a differentially operated data transmission link (12), preferably terminated with its characteristic impedance, in which reliable detection is possible even if a break o...
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| Format: | Patent |
| Sprache: | eng ; fre ; ger |
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| Zusammenfassung: | The invention relates to a data transmission device with at least one supply voltage (UB), a transmitter (11), a receiver (13) and a differentially operated data transmission link (12), preferably terminated with its characteristic impedance, in which reliable detection is possible even if a break occurs in one of the two transmission links (18, 21), due to a pure resistance network comprising the resistors (17, 20) of the transmitter (11), the data transmission link (12) with the resistors (22, 23) and the resistors (28,29, 30,31) of the receiver (13), where in each case at least one matching resistor (24, 26) is provided on the receiver side, which is connected in each case to one transmission wire (18, 21) of the data transmission link (12), to generate opposite levels (U3, U4) in the receiver (13) and to generate an absolute level if a fault occurs in one transmission wire (18 or 21). |
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