| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a signal transmission device, with which it is possible to quickly resolve input/output logic inconsistency.SOLUTION: A signal transmission device 1 includes: a first circuit 100 and a second circuit 200 that operate at mutually different ground references (GND1 and GND2); and a third circuit 300 that performs signal transmission while insulating between the first circuit 100 and the second circuit 200. The second circuit 200 switches a logic level of an output signal OUT according to a logic level of an input signal IN informed from the first circuit 100, and informs the first circuit 100 of the logic level of the output signal OUT. The first circuit 100 informs the second circuit 200 of the logic level of the input signal IN not only when the logic level of the input signal IN is switched but also when the logic level of the output signal OUT informed from the second circuit 200 is inconsistent with the logic level of the input signal IN.</p> |
