74HC540 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 74HC540; 74HCT540 is an 8-bit inverting buffer/line driver with 3-state outputs. The device features two output enables (OE1 and OE2). A HIGH on OEn causes the outputs to assume a high-impedance OFF-state. Inputs include clamp diodes. This enable.