The IN74ACT273 is identical in pinout to the LS/ALS273, HC/HCT273. The IN74ACT273 may be used as a level converter for interfacing TTL or NMOS outputs to High Speed CMOS inputs.
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.

• TTL/NMOS Compatible Input Levels
• Outputs Directly Interface to CMOS, NMOS, and TTL
• Operating Voltage Range: 4.5 to 5.5 V
• Low Input Current: 1.0 µA; 0.1 µA @ 25°C
• Outputs Source/Sink 24 mA