BUY MC14574P https://www.utsource.net/itm/p/303484.html
CMOS MSI(PROGRAMMABLE DUAL OP AMP / DUAL COMPARATOR
Description: The MC14574P is a quad 2-input NAND Schmitt trigger device with open-drain outputs. Features: Open-drain outputs can be connected to other open-drain outputs to implement active-low wired-OR or active-high wired-AND functions Inputs are Schmitt trigger circuits Outputs can sink up to 32 mA Inputs are protected from damage due to static discharge Outputs can be wire-ORed to create active-low logic functions Inputs are TTL compatible Available in 16-pin DIP package Applications: Pulse generation Waveform shaping Timing circuits Interface circuits Logic gating Signal conditioning (For reference only)