This part is a kind of semiconductor called TC74VHC273FT.
Function of this product has OCTAL D-TUPE FLIP-FLOP WITH CLEAR.
Manufacturers : Toshiba
Image and pinout :

Some of the text within the PDF file :
TC74VHC273F/FW/FT/FK TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic TC74VHC273F,TC74VHC273FW,TC74VHC273FT,TC74VHC273FK Octal D-Type Flip-Flop with Clear The TC74VHC273 is an advanced high speed CMOS OCTAL D-TYPE FLIP FLOP fabricated with silicon gate C2MOS technology. It achieves the high speed operation similar to equivalent Bipolar Schottky TTL while maintaining the CMOS low power dissipation. Information signals applied to D inputs are transferred to the Q outputs on the positive going edge of the clock pulse. When the CLR input is held “L”, the Q outputs are at a low logic level independent of the other inputs. An input protection circuit ensures that 0 to 5.5 V can be applied to the input pins without regard to the supply voltage. This device can be used to interface [ ... ]
TC74VHC273FT PDF Datasheet Download
