Data interface having an intrinsically safe, integrated error detection

摘要

An intrinsically safe digital circuit has at least two output signals and at least four input signals for detecting a potential error in the circuit and/or in one of its input signals, the at least four input signals forming two input signal pairs inverted in a double-track manner, and the at least two output signals forming an output signal pair inverted in a double-track manner. The output signal pair transmits a piece of information which is identical to the one of an input signal pair, when the error is not present.

主权项

1. An intrinsically safe digital circuit, comprising:
means for receiving at least four input signals; and means for generating at least two output signals; wherein the at least four input signals form two input signal pairs inverted in a double-track manner, and the at least two output signals form an output signal pair inverted in a double-track manner, and wherein a potential error in at least one of the digital circuit and the input signals is able to be detected such that the output signal pair transmits an information item which is identical to one of the two input signal pairs when a potential error in at least one of the digital circuit and the input signals is not present.