BUY 74S04 https://www.utsource.net/itm/p/1526898.html
HEX INVERTER SINGLE STATE
Description: The 74S04 is a 14-pin integrated circuit logic inverter manufactured by Texas Instruments and Philips Semiconductor. Features: - Low power consumption - High noise immunity - High speed operation - Low input current - Low input capacitance Applications: - Clock and timing circuits - Signal conditioning - Interface circuits - Memory circuits - Logic level conversion - Power supply sequencing (For reference only)