Standard logic gate
Torex Semiconductor

"The XC74Series are one gate logic ICs, integrated in to ultra mini mold packages, consist of ""multi-channel gate logics. As they adopt only the required gates efficiently, the cost and the size are minimized."
The XC74UHSeries provide high speed operations that equal LS-TTL with the CMOS low power.consumption.
The XC74ULSeries provide higher speed operations that is more than LS-TTL with the CMOS low power consumption.
"Since theSeries are able to be applied voltages over and above the power supply voltage, it is possible to change "
the level from 5V ~ 3V systems.