The NEC 701A is an integrated circuit (IC) that is part of the 74LS family of logic gates. It is a 4-bit synchronous binary counter with a synchronous reset. It is used in digital circuits for counting and timing applications. The 701A has four outputs (A, B, C and D) that are connected to a 4-bit binary counter. The counter is triggered by a clock signal on the CLK input. The counter can be reset by a signal on the RST input. The 701A is available in a standard SOP-4 package. It has a power supply voltage of 5V and a maximum operating temperature of 70°C. The 701A is commonly used in digital circuits for counting, timing and frequency division applications. It can also be used for data processing, memory address decoding and other logic applications.(For reference only)
https://www.utsource.net/itm/p/942217.html