The 74AHC2G00; 74AHCT2G00 are high-speed Si-gate CMOS devices. They provide two 2-input NAND gates. The AHC device has CMOS input switching levels and supply voltage range 2 V to 5.5 V. The AHCT device has TTL input switching levels and supply voltage range 4.5 V to 5.5 V.