TECHNICAL DATA KK74HCT20A Dual 4-Input NAND Gate High-Performance Silicon-Gate CMOS The KK74HCT20A is identical in pinout to the LS/ALS20.
The KK74HCT20A may be used as a level converter for interfacing TTL or NMOS outputs to High-Speed CMOS inputs.
TTL/NMOS-Compatible Input Levels Outputs Directly Interface to CMOS, NMOS, and TTL Operating Voltage Range: 4.5 to 5.5 V Low Input Current: 1.0 µA High Noise Immunity Characteristic of CMOS Devices