aip74ahc1g125 and aip74ahct1g125 are high-speed si-gate cmos devices. they provide one non-inverting buffer/line driver with 3-state output. the 3-state output is controlled by the output enable input ( ). a high at causes the output to assume a high-impedance off-state. the ahc device has cmos input switching levels and supply voltage range 2v to 5.5v. the ahct device has ttl input switching levels and supply voltage range 4.5v to 5.5v.