The IN74ACT125 is identical in pinout to the LS/ALS125, HC/HCT125.
The IN74ACT125 may be used as a level converter for interfacing TTL or NMOS outputs to High Speed CMOS inputs.
The IN74ACT125 noninverting buffers are designed to be used with 3-state memory address drivers, clock drivers, and other bus-oriented systems.
The devices have four separate output enables that are 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