74HC165 8-Bit Parallel-In/Serial-Out Shift Register | CMOS Logic | DIP-16

Description

The 74HC165 is a high-speed 8-bit CMOS shift register that accepts parallel data inputs and provides a serial output. It is widely used to expand the number of digital inputs on a microcontroller, allowing you to read the state of up to 8 switches or sensors using only three pins on your controller.

When the Parallel Load (PL) pin is pulled LOW, the device asynchronously loads the 8-bit parallel data from its inputs. Once loaded, the data can be shifted out serially on the Q7 output pin using a clock signal. This makes it an efficient and cost-effective solution for interfacing large numbers of inputs to systems with limited GPIO ports.

Note: Product images are shown for reference only. The actual product may vary in appearance, manufacturer marking, or logo depending on stock availability.

Features

• 8-bit parallel-in to serial-out conversion
• Asynchronous parallel load capability
• Wide operating voltage range (typically 2V to 6V)
• High noise immunity characteristic of CMOS devices
• Standard 16-pin DIP through-hole package

Benefits

• GPIO Expansion: Read multiple digital inputs while consuming only a few microcontroller pins.
• Fast Operation: High-speed CMOS technology supports quick data retrieval.
• Simple Interfacing: Compatible with common microcontrollers like Arduino, ESP32, and PIC.

Applications

• Expanding Microcontroller Digital Inputs
• Reading Matrix Keypads and Switch Arrays
• Data Serialization for Communication Buses
• Status Monitoring in Industrial Control

Package Includes

• 1 x 74HC165 8-Bit Parallel In/Serial Out Shift Register IC (DIP-16)

Specifications