BUY MB74S38 https://www.utsource.net/itm/p/1253377.html

The MB74S38 is a 4-bit binary counter with a synchronous reset. It is designed for use in high-speed counting applications. Description: The MB74S38 is a 4-bit binary counter with a synchronous reset. It is designed for use in high-speed counting applications. It has a maximum operating frequency of 300MHz and a maximum propagation delay of 10ns. It has a wide operating voltage range of 2.7V to 5.5V. Features: 4-bit binary counter Synchronous reset Maximum operating frequency of 300MHz Maximum propagation delay of 10ns Wide operating voltage range of 2.7V to 5.5V Applications: High-speed counting applications Frequency division Pulse generation Clock generation (For reference only)