54LS109A
Texas Instruments
Dual J-K Positive-Edge-Triggered Flip-Flops
Dual J-K Positive-Edge-Triggered Flip-Flops
Dual J-K Positive-Edge-Triggered Flip-Flops
Dual Positive-Edge-Triggered J-K Flip-Flops with Preset/ Clear/ and Complementary Outputs
DUAL JK POSITIVE EDGE-TRIGGERED FLIP-FLOP