BUY MM74C14M https://www.utsource.net/itm/p/11647743.html

Manufacturer: Fairchild Description: Hex Inverter Features: High-Voltage Types (20V Rating) Schmitt Trigger Action Inputs Compatible With Most TTL Circuits Outputs Source/Sink 24mA Balanced Propagation Delays Symmetrical Output Impedance Common Reset Low Power Consumption High Noise Immunity Fanout (Over Temperature Range) Standardized Symmetrical Output Characteristics 5V, 10V, and 15V Parametric Ratings Meets All Requirements of JEDEC Tentative Standard No. 13B, “Standard Specifications for Description of B Series CMOS Devices” Applications: Interface Circuits Memory Address Registers High-Voltage/High-Current Drivers Line Receivers Clock Oscillators High-Speed Counters LED Drivers High-Speed Logic Circuits High-Speed Data Acquisition Systems High-Speed Bus Drivers (For reference only)