74XX393 - Dual 4 bit binary counter

            Ŀ
          Ĵ              Ŀ
      CLK                  VCC
          Ĵ              
          Ĵ              Ŀ
      CLR                  CLK
          Ĵ              
          Ĵ              Ŀ
      QA                   CLR
          Ĵ              
          Ĵ              Ŀ
      QB                    QA
          Ĵ              
          Ĵ              Ŀ
      QC                    QB
          Ĵ              
          Ĵ              Ŀ
      QD                    QC
          Ĵ              
          Ĵ              Ŀ
      GND                   QD
          Ĵ              
            

CLR Active high
CLK On Leading Edge
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