The 100351 contains six D-type edge-triggered, master/ slave flip-flops with true and complement outputs, a pair of common Clock inputs (CPa and CPb) and common Master Reset (MR) input. Data enters a master when both CPa and CPb are LOW and transfers to the slave when CPa and CPb (or both) go HIGH. The MR input overrides all other inputs and makes the Q outputs LOW. All inputs have 50 k pull-down resistors.