BUY DM7438N https://www.utsource.net/itm/p/11724101.html
IC GATE NAND 4CH 2-INP 14DIP
The DM7438N is a quad 2-input NAND gate integrated circuit from National Semiconductor. It is a 14-pin DIP (dual in-line package) that contains four independent 2-input NAND gates. Description: The DM7438N is a quad 2-input NAND gate integrated circuit from National Semiconductor. It is a 14-pin DIP (dual in-line package) that contains four independent 2-input NAND gates. Features: Low power consumption High noise immunity High speed operation Low input current Outputs source/sink up to 24mA Applications: Logic gates Digital circuits Flip-flops Counters Multiplexers Decoders Data selectors (For reference only)