74HCU04 Datasheet, nexperia

* Wide supply voltage range from 2.0 V to 6.0 V
* CMOS low power dissipation
* High noise immunity
* Latch-up performance exceeds 100 mA per JESD 78 Class.

The 74HCU04 is a hex unbuffered inverter. Inputs include clamp diodes. This enables the use of current limiting resistors to interface inputs to voltages in excess of VCC. 2. Features and benefits
* Wide supply voltage range from 2.0 V to 6.0 V .