What the ratings mean for the BOM
The SN74HCS00BQAR: The Schmitt-trigger inputs provide hysteresis that cleans up slow or noisy edges – critical for long trace runs, sensor interfaces, or oscillator circuits where a standard CMOS input would chatter. The 2 µA maximum quiescent current means this gate adds negligible standby draw, so it fits into battery-backed or always-on domains without a power budget hit. The 7.8 mA output drive is enough to drive a single standard CMOS load or a low-power LED, but you will need a buffer for heavier fan-out.