US Patent 10325836 Integrated circuit with connectivity error detection

An integrated circuit with transmission line error detection comprises a substrate, a package enclosing the substrate, a lead extending from the inside of the package to the outside of the package, and a circuit supported by the substrate. The circuit includes an input circuit and an output circuit. A first wire is coupled between the output circuit and the lead and a second wire is coupled between the lead and the input circuit so that the input circuit receives a signal generated by the output circuit after the signal has been transmitted across the first and second wires.