General Description
The F109 consists of two high-speed, completely independent transition clocked JK flip-flops. The clocking operation is independent of rise and fall times of the clock waveform. The JK design allows operation as a D-type flip-flop (refer to F74 data sheet) by connecting the J and K inputs.

Asynchronous Inputs:
   LOW input to SD sets Q to HIGH level
   LOW input to CD sets Q to LOW level
   Clear and Set are independent of clock
   Simultaneous LOW on CD and SD makes
      both Q and Q HIGH