The DG444/DG445 are quad, single-pole/single-throw (SPST) analog switches. The DG444 has 4 normally closed switches and the DG445 has 4 normally open switches. Switching times are less than 250ns for tON and less than 70ns for tOFF. Operation is from a single +10V to +30V supply, or bipolar 4.5V to 20V supplies. Maxim's improved DG444/DG445 continue to be fabricated with a 44V silicon-gate process.