SN74ALS166N

The SN74ALS166N is a synchronous 8-bit register with parallel inputs and outputs. It belongs to the family of Logic – Shift Registers, and is widely used for data storage and data transfers. Here we will be focusing on its application fields and working principles.

Application Field

The SN74ALS166N is ideally suited for high speed data transferring from one memory to the other. It provides a data buffer between two devices, providing widened and sure data access. Moreover, it is widely used in CNC systems, PLCs and other industrial devices, thanks for its buffering, phase-locking loop and digital-to-analog conversation applications.

In addition, it is widely applied in higher-level data bus conversion, such as in computers. In computers, it is widely used to complete data transfers between CPU and external devices. It can be found in various applications, such as memory control, general-purpose calculation, fifo buffers, status register and calculations involving large numbers.

Working Principle

The SN74ALS166N is a synchronous 8-bit shift register. It has 8 outputs that are connected to an 8-bit parallel-in port, which can be used as a bidirectional buffer. Furthermore, this register contains a reset pin, which is used to reset the register to its initial state. When the CLK signal is high, the system will clock in the data from the parallel-in port.

When the CLK signal is low, the data held inside the system will be pushed out from the 8-bit parallel-out port. During the process, the internal 8-bit shift register will stay in the same state as when the CLK signal is high. This will make sure that the data stored in the shift register is output in a stable way.

Above is the summary of the application fields and working principles of the SN74ALS166N. We have seen that this synchronous 8-bit register is widely used in industrial situations, computers and other applications, as it provides a data buffer between two devices, allowing sure and wide data access. Furthermore, its shift-register structure enables it to store data in a stable way and to output them bidirectionally.