The SY100S331 offers three D-type, edge-triggered master/slave flip-flops with true and complement outputs, designed for use in high-performance ECL systems. Each flip-flop is controlled by a common clock (CPc), as well as its own clock pulse (CPn). The resultant clock signal controlling the flip-flop is the logical OR operation of these two clock signals. Data enters the master when both CPc and CPn are LOW and enters the slave on the rising edge of either CPc or CPn (or both). Additional control signals include Master Set (MS) and Master Reset (MR) inputs. Each flip-flop also has its own Direct Set (SDn) and Direct Clear (CDn) signals. The MR, MS, SDn and DCn signals override the clock signals. The inputs on this device have 75K pull-down resistors.