ON SEMICONDUCTOR MC74HC273A handbook
Datasheet
The MC74HC273A/D is an Onsemi high-performance silicon-gate CMOS octal D flip-flop with common clock and reset. Its pinout is identical to that of the LS273. The device inputs are compatible with standard CMOS outputs; with pullup resistors, they are compatible with LSTTL 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.
