Patent ID: 7368946

Claim:
An integrated circuit (IC) device, comprising: a low-voltage domain having a power terminal coupled to a low supply voltage and including circuitry to generate a number of low-voltage select signals; and a high-voltage domain having a power terminal coupled to a high supply voltage, the high supply voltage greater than the low supply voltage, and including circuitry to provide a plurality of input signals and including a multiplexing circuit, the multiplexing circuit comprising: a level-shifting decoder circuit having inputs to receive at least two of the low-voltage select signals and configured to generate a number of high-voltage decoded select signals; a first multiplexer having input terminals to receive the plurality of input signals, having select terminals responsive to a combination of the low-voltage select signals and the high-voltage decoded select signals, and having an output; an inversion circuit having input terminals to receive the plurality of input signals and configured to generate a plurality of complemented input signals; a second multiplexer having input terminals to receive the plurality of complemented input signals, having select terminals responsive to the combination of the low-voltage select signals and the high-voltage decoded select signals, and having an output; and an output circuit having inputs coupled to the outputs of the first and second multiplexers, and having first and second outputs to generate a differential output signal.