second stage the first stage may be configured to generate an intermediate signal having a first voltage in response to an input signal having a second voltage received from a pad the second stage may be configured to generate a core voltage in response to the first voltage the voltage received from the pad may operate at a voltage compliant with one or more published interface specifications application_number US 201213530426 A description referring to fig1 a block diagram of a circuit 50 is shown illustrating a context of an embodiment of the invention the circuit 50 generally comprises a plurality of devices or circuits 60 a 60 n a plurality of devices or circuits 70 a 70 n a block or circuit 80 and a plurality of devices or circuits 100 a 100 n in one example the devices 60 a 60 n may be implemented as pins connected to a package of an integrated circuit ic the devices 70 a 70 n may be implemented as bond pads the bond pads 70 a 70 n may be connected to the pins 60 a 60 n through a lead frame the pads 70 a 70 n may be connected to the circuits 100 a 100 n through a plurality of bond wires the circuit 80 may be implemented as a core circuit the circuits 100 a 100 n may be implemented as a number of interface circuits each of the circuits 100 a 100 n may be configured to interface with supply voltages higher than the.