ON Semiconductor MC74HC164A 8-Bit Serial-Input/Parallel-Output Shift Register

The MC74HC164A from ON Semiconductor is a high-speed, 8-bit serial-input/parallel-output shift register designed for use in digital systems. This integrated circuit is part of ON Semiconductor's HC family, which is well-known for its high noise immunity and low power consumption. The device is particularly suitable for applications where a series of digital signals need to be shifted into a parallel format, making it an essential component for data processing, communication systems, and control interfaces.

Constructed with silicon gate CMOS technology, the MC74HC164A offers significant advantages in terms of speed and power efficiency over traditional TTL devices. It operates over a broad voltage range from 2V to 6V and features a minimum clock input frequency of 25 MHz at 6V, ensuring compatibility with a wide variety of digital circuits and the ability to support high-speed operations.

The device features two serial data inputs (A and B), eight parallel data outputs (Q0 to Q7), a clock input, and a clear input. The clear input allows for the immediate clearing of the shift register, resetting all outputs to a low state, which is particularly useful for initialization and error handling in digital systems. Data is shifted on the positive-going transitions of the clock input, allowing for precise timing and synchronization within digital systems.

With its compact SOIC-14 and TSSOP-14 package options, the MC74HC164A is designed for space-conscious applications, providing a high-functionality solution without the need for a large footprint on the PCB. This makes it an excellent choice for portable electronics, embedded systems, and any application where board space is at a premium.

Overall, the MC74HC164A shift register is a reliable and versatile component that enhances the efficiency and performance of digital systems. Its robust design and compatibility with a wide range of operating voltages make it an ideal choice for designers looking to implement serial-to-parallel data conversion in their next project.