This part is a kind of semiconductor called HC273.

Function of this product has Octal D Flip-Flop with Common Clock and Reset.

Manufacturers : System Logic Semiconductor

Image and pinout :

Some of the text within the PDF file :

SL74HC273 Octal D Flip-Flop with Common Clock and Reset High-Performance Silicon-Gate CMOS The SL74HC273 is identical in pinout to the LS/ALS273. The device inputs are compatible with standard CMOS outputs; with pullup resistors, they are compatible with LS/ALSTTL outputs. This device consists of eight D flip-flops with common Clock and Reset inputs. Each flip-flop is loaded with a low-to-high transition of the Clock input. Reset is asynchronous and active low. • Outputs Directly Interface to CMOS, NMOS, and TTL • Operating Voltage Range: 2.0 to 6.0 V • Low Input Current: 1.0 µA • High Noise Immunity Characteristic of CMOS Devices ORDERING INFORMATION SL74HC273N Plastic SL74HC273D SOIC TA = -55° to 125° C for all packages PIN ASSIGNMENT LOGIC DIAGRAM FUNCTION TABLE PIN 20=VC [ ... ]

HC273 PDF Datasheet Download