Patent ID: 8493893

Claim:
A full-duplex digital isolator comprising: a transformer with a first side and a second side magnetically coupled to each other, the first side and second side being galvanically isolated from each other; a first electrical circuit attached to the first transformer side comprising a first pulse generator responsive to signal transitions; a second electrical circuit attached to the second transformer side, the second electrical circuit being galvanically isolated from the first electrical circuit and comprising both (i) a second pulse generator responsive to signal transitions and (ii) at least one of a differential receiver and a comparator; wherein: the isolator is configured to transfer a first signal across the transformer from the first electrical circuit to the second electrical circuit, the isolator is configured to transfer a second signal across the transformer from the second electrical circuit to the first electrical circuit; the isolator being configured to transfer the first and second signals simultaneously; and at least one of the electrical circuits comprises a unilateral network and a differential receiver configured to reject signals from the same transformer side to which the unilateral network is connected.