CD74HC195M

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The CD74HC195M is one of the most popular types of logic-shift registers, which are a type of electronic component used to store multiple bits of data using a shifting register. The CD74HC195M is a high-speed 4-bit serial-in/serial-out shift register with an asynchronous parallel output register. That means it can take input data from a serial port, then shift and output that data to a parallel output register.

This shift register offers the highest speed operation of any comparable shift register and is designed to be used in most digital applications. Its input buffer is designed to accept logical signals from TTL and CMOS logic sources. It also has latch-up immunity and noise immunity, meaning that it can hold up and protect its data even under adverse conditions.

The CD74HC195M operates in two basic modes: shift-out mode (serial-in/serial-out) and parallel-in mode (parallel-in/parallel-out). In shift-out mode, it shifts data out of its serial input into four serial output lines simultaneously. The data can then be shifted out into an asynchronous parallel output register. In parallel-in mode, the data is loaded directly into the parallel outputs. The parallel outputs can then be clocked to shift in new data.

The CD74HC195M is typically used in applications requiring high-speed parallel-in/parallel-out data transfer. Examples include digital signal processing, microprocessor-controlled peripherals, input/output devices, and data communication. Its ability to easily interface between digital and analog systems make it especially valuable for industrial process control and data acquisition.

The CD74HC195M is also useful for digital system test and evaluation, as it can be programmed to simulate various logic functions or to generate large amounts of repeating patterns. In digital signal processing, it can be used to implement low-level logic and control functions related to digital signal processing algorithms.

The working principle of the CD74HC195M is simple. It accepts data into its serial input and then shifts this data out at the same time. The data is then output on the four parallel output lines. Depending on the mode selected, data can either be shifted out on the serial output or loaded directly into the parallel outputs. The data can be clocked as needed to perform serial-in/parallel-out and/or parallel-in/serial-out operations.

The CD74HC195M allows data to be shifted out in a matter of nanoseconds and is designed to be used with the full family of TTL and CMOS logic devices. It is an economical and reliable choice for those who require fast and flexible data transfer between devices in their digital applications. Its ability to easily interface between digital and analog systems make it especially valuable for industrial process control and data acquisition.

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