BUY MC14093BD https://www.utsource.net/itm/p/11727183.html

Description: The MC14093BD is a dual 4-input NAND gate with Schmitt-trigger inputs. Features: - Inputs are Schmitt-trigger devices for noise immunity - Outputs source/sink 24mA - Outputs are open-drain - Power supply voltage range of 2V to 6V - Low power consumption - High noise immunity - High speed Applications: - Pulse generation - Clock and timing circuits - Waveform generation - Interface circuits - Logic gating - Signal conditioning (For reference only)