SN54LS114A

SN54/74LS114A DUAL JK NEGATIVE EDGE-TRIGGERED FLIP-FLOP The SN54/ 74LS114A offers common clock and common clear inputs and individual J, K, and set inputs. These monolithic dual flip-flops are designed so that when the clock goes HIGH, the inputs are enabled and data will be accepted. The logic level of the J and K inputs may be allowed to change when the clock pulse is HIGH and the bistable will perform according to the truth table as long as minimum set-up times are observed. Input data is transferred to the outputs on the negative-going edge of the clock pulse. DUAL JK NEGATIVE EDGE-TRIGGERED FLIP-FLOP LOW POWER SCHOTTKY LOGIC DIAGRAM (Each Flip-Flop) J SUFFIX CERAMIC CASE 632-08 14 Q 5(9) 6(8) Q 1 CLEAR (CD) TO OTHER FLIPĆFLOP J 3(11) 13 CLOCK (CP) 4(10) SET (SD) K 2(12) 14 1 N SUFFIX PLASTIC CASE 646-06 14 1 D SUFFIX SOIC CASE 751A-02 ORDERING INFORMATION MODE SELECT — TRUTH TABLE INPUTS OPERATING MODE SD Set Reset (Clear) *Undetermined Toggle Load “0” (Reset) Load “1” (Set) Hold L H L H H H H CD H L L H H H H J X X X h l h l K X X X h h l l Q H L H q L H q Q L H H q H L q 3 OUTPUTS SN54LSXXXJ SN74LSXXXN SN74LSXXXD Ceramic Plastic SOIC LOGIC SYMBOL 4 10 * Both outputs will be HIGH while both SD and CD are LOW, but the output states are unpredictable if SD and CD go HIGH simultaneously. H, h = HIGH Voltage Level L, I = LOW Voltage Level X = Don’t Care l, h (q) = Lower case letters indicate the state of the referenced input (or output) l, h (q) = one set-up ...