BUY 74AS00 https://www.utsource.net/itm/p/1363735.html

The 74AS00 is a quad 2-input NAND gate device from Texas Instruments. It is a 14-pin small outline package (SOP) logic IC. Description: The 74AS00 is a high-speed quad 2-input NAND gate. It features low power consumption and high noise immunity. Features: Low power consumption High noise immunity High speed operation Inputs and outputs compatible with TTL levels Outputs source/sink 24 mA ESD protection: Human body model > 2000 V Applications: Clock and timing circuits Address decoding Data routing Interface circuits Logic gating Flip-flops (For reference only)