BUY 74F280AN https://www.utsource.net/itm/p/1705357.html
Parity Generator/Checker
The 74F280AN is a 4-bit synchronous binary counter with a synchronous clear and a synchronous load. It is a 14-pin dual in-line package (DIP) integrated circuit (IC) with a supply voltage of 4.5 to 5.5 V. The 74F280AN is a synchronous counter, which means that all of its outputs change at the same time when the clock signal is applied. It has four outputs (Q0-Q3) and a synchronous clear (CLR) and synchronous load (LD) inputs. The counter can be reset to zero by applying a low logic level to the CLR input. The counter can be loaded with a 4-bit binary number by applying a low logic level to the LD input and applying the 4-bit binary number to the data inputs (D0-D3). The 74F280AN is commonly used in digital circuits for counting, timing, and frequency division applications. It is also used in data acquisition systems, digital clocks, and frequency dividers. (For reference only)