Product Overview: 74HC165N by NXP Semiconductors

The 74HC165N is a high-speed Si-gate CMOS device and is pin compatible with low-power Schottky TTL (LSTTL). Manufactured by NXP Semiconductors, a leader in the industry, this integrated circuit is designed to provide a practical solution for serial-to-parallel data conversion. It is widely used in applications that require the acquisition of multiple digital signals to be processed or read by a microcontroller with a limited number of input pins.

The 74HC165N comes in a standard 16-pin DIP (Dual In-line Package), making it suitable for through-hole mounting, which is ideal for prototyping and durable applications. This device features an 8-bit parallel-in or serial-in, serial-out shift register that enables the conversion of input data received in parallel form into serial output data. One of the key advantages of the 74HC165N is its ability to operate at a wide range of voltages, typically from 2V to 6V, making it versatile for use in various logic level systems.

The device has two distinct modes of operation: Parallel (broadside) load and shift. The parallel load feature is activated by the appropriate logic level at the shift/load (SH/LD) input. When in the shift mode, data is shifted on the positive-going transitions of the clock (CP) input. The serial output (Q7S) allows for cascading of multiple devices by connecting it to the serial input of the next device, thus enabling the parallel-to-serial conversion of more than 8 bits of data.

Additional features of the 74HC165N include an asynchronous master reset input (MR) which clears the register, setting all outputs (Q0 to Q7) low. This is particularly useful in applications where quick reinitialization of the register is required without the need to cycle through clock inputs.

Overall, the 74HC165N by NXP Semiconductors is a reliable and efficient choice for designers looking to interface with multiple input sources, while minimizing the use of microcontroller pins. Its ease of use, combined with the capability to work in a wide voltage range, makes it a versatile component for digital systems.