This part is a kind of semiconductor called 74LS109A.

Function of this product has LOW POWER SCHOTTKY.

Manufacturers : ON Semiconductor

Image and pinout :

Some of the text within the PDF file :

SN74LS109A Dual JK Positive Edge-Triggered Flip-Flop The SN74LS109A 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 flip-flop by simply connecting the J and K pins together. http://onsemi.com MODE SELECT – TRUTH TABLE INPUTS OPERATING MODE SD Set Reset (Clear) *Undetermined Load “1” (Set) Hold Toggle Load “0” (Reset) * 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 H q q L Q L H H L q q H OUTPUTS LOW POWER SCHOTTKY 16 1 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 Leve [ ... ]

74LS109A PDF Datasheet Download