The IN74AC125 is identical in pinout to the LS/ALS125, HC/HCT125. The device inputs are compatible with standard CMOS outputs; with pullup resistors, they are compatible with LS/ALS outputs. The IN74AC125 noninverting buffers are designed to be used with 3state memory address drivers, clock drivers, and other bus-oriented systems. The devices have four separate output enables that are active-low. Outputs Directly Interface to CMOS, NMOS, and TTL Operating Voltage Range: 2.0 to 6.0 V Low Input Current: 1.0 A; 0.1 A @ 25C High Noise Immunity Characteristic of CMOS Devices Outputs Source/Sink 24 mA