BUY 74F524PC https://www.utsource.net/itm/p/1702039.html

Description: The 74F524PC is a 20-pin DIP (dual in-line package) integrated circuit (IC) manufactured by Fairchild Semiconductor. It is a 4-bit universal shift register that can be used to store and transfer data. Features: 4-bit universal shift register 20-pin DIP package High speed operation Low power consumption TTL compatible Applications: Data storage and transfer Digital signal processing Automotive electronics Industrial automation Robotics (For reference only)