BUY TEXAS INSTRUMENTS/TI CD4093BE https://www.utsource.net/itm/p/8639987.html

Description: The CD4093BE is a quad 2-input NAND Schmitt trigger device from Texas Instruments. It is a 14-pin DIP (dual in-line package) integrated circuit. Features: High noise immunity Low power consumption High speed operation High input impedance Low output saturation voltage TTL compatible Applications: Pulse generation Clock and timing circuits Signal conditioning Waveform generation Memory address decoding Multivibrators Data selectors/multiplexers (For reference only)