Patent ID: 8222771

Claim:
A circuit for latching an illuminating pushbutton switch comprising: inputs receiving set, reset and toggle control signals; outputs delivering open, closed and blink control signals; latch logic controlled by the set and reset control signals, a first output of the latch logic delivering a first signal selected to maintain the illuminated pushbutton switch in an open state to the open control signal output and a second output of the latch logic delivering a second signal selected to maintain the illuminated pushbutton switch in a closed state to the closed control signal output; and a frequency divider and oscillator coupled together to deliver, based upon the set and reset control signals, a signal to the blink control signal output that alternates at a selected frequency between a signal selected to maintain the illuminated pushbutton switch in the open state and the signal selected to maintain the illuminated pushbutton switch in the closed state, wherein the circuit fits within a housing for the illuminated pushbutton switch within a space sized to hold two snap action switching devices, and the inputs and outputs are coupled to external pins from the illuminated pushbutton switch.