Patent ID: 7944231

Claim:
An electronic device designed to transport digital information (“0”, “1”) over long distances comprising a transmitter, generating current pulses and at least one assembly of means of receiving or receivers, converting the received current pulses into logic pulses which are compatible with the operation of standard electronic logic circuits, wherein the receiver comprises a pair of magnetoresistive stacks comprising at least one hard ferromagnetic layer and one soft ferromagnetic layer separated by a non-ferromagnetic interlayer, the hard layer of each of the magnetoresistive stacks being pinned in a magnetic orientation perpendicular to an easy-magnetization axis which is used as a reference for the soft layer of the same stack, this soft layer of each of the magnetoresistive stacks having a magnetic orientation which can be modulated by the magnetic field generated by the current pulses output by the transmitter so as to produce a modification in the transverse resistance of the stack which is sufficient to trigger an electrical signal, the modifications in the resistance of the two stacks through which a single pulse passes cooperating in order to form a differential signal, the modulation of the magnetic orientation of the soft layer of each stack being sufficiently small for this orientation not to reverse between two stable positions but to fluctuate around a stable position.