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

74HC165 8Bit Parallel In/Serial Out Shift Register is a high-performance CMOS logic integrated circuit designed to efficiently convert parallel data into serial data. Widely used in microcontroller-based systems, digital electronics, and embedded applications, the 74HC165 allows designers to expand input capabilities while minimizing I/O pin usage.

Built using High-Speed CMOS (HC) technology, this shift register offers low power consumption, high noise immunity, and fast switching speeds, making it ideal for both educational and industrial electronic projects. The device captures 8-bit parallel data using a load control pin and then shifts it out serially in synchronization with a clock signal, enabling seamless interfacing with MCUs, DSPs, and FPGAs.

Key Features of 74HC165 8Bit Parallel In/Serial Out Shift Register

• 8-Bit Parallel Data Input for simultaneous data capture

• Serial Data Output for efficient data transmission

• High-Speed CMOS Technology for fast and reliable operation

• Low Power Consumption, suitable for battery-powered devices

• Asynchronous Parallel Load for quick data acquisition

• Clock-Controlled Shifting ensures precise data timing

• Wide Operating Voltage Range from 2V to 6V

• Cascadable Design allows multiple ICs to be chained together

• High Noise Immunity compliant with CMOS logic standards

• TTL-Compatible Inputs at 5V operation

Detailed Product Description

The 74HC165 shift register IC is primarily used to convert parallel data into serial data, significantly reducing the number of input pins required on a microcontroller. This makes it an excellent choice for systems where GPIO availability is limited.

When the parallel load (PL) pin is activated, all 8 input bits are captured simultaneously. Once loaded, the data is shifted out bit-by-bit through the serial output pin on each clock pulse. The clock enable (CE) pin allows control over data shifting, while the serial input pin enables cascading of multiple shift registers to handle larger data widths.

Thanks to its low propagation delay and high switching speed, the 74HC165 is suitable for real-time data acquisition systems, control panels, and digital communication interfaces. Its robust CMOS design ensures stable performance even in electrically noisy environments.

Technical Specifications

• IC Type: 8-Bit Parallel In / Serial Out Shift Register

• Logic Family: High-Speed CMOS (74HC Series)

• Number of Bits: 8

• Supply Voltage (Vcc): 2V to 6V

• Input Logic Level: CMOS / TTL compatible

• Clock Frequency: Up to 25 MHz (at 5V)

• Operating Temperature Range: –40°C to +85°C

• Package Type: DIP-16 / SOIC-16 / TSSOP-16 (varies by variant)

• Pin Count: 16

• Power Consumption: Very low static power dissipation

Applications of 74HC165 8Bit Parallel In/Serial Out Shift Register

The 74HC165 PISO shift register is widely used across various electronic and embedded systems, including:

• Microcontroller Input Expansion

• Keyboard and Keypad Interfaces

• Switch and Button Reading Circuits

• Digital Data Acquisition Systems

• Industrial Control Panels

• Home Automation Systems

• LED Matrix and Display Control

• Robotics and IoT Devices

• Test and Measurement Equipment

• Educational and DIY Electronics Projects

Its ability to cascade multiple devices makes it especially useful for handling large numbers of digital inputs with minimal wiring and reduced hardware complexity.

Why Choose the 74HC165 Shift Register?

The 74HC165 8-Bit Parallel In / Serial Out Shift Register stands out due to its reliability, versatility, and efficiency. It simplifies circuit design, reduces PCB space, and improves system scalability. Whether you are a student, hobbyist, or professional engineer, this IC provides a cost-effective and dependable solution for parallel-to-serial data conversion.

With excellent electrical characteristics and wide industry adoption, the 74HC165 remains a preferred choice for modern digital electronics and embedded system applications.

Package Includes:

1 x 74HC165 8-Bit Serial In/Parallel out Shift Register IC (DIP-14 Package)

FAQ

1. Where can we buy this 74HC165 8-Bit Serial In/Parallel out Shift Register IC?

This product is available online https://aiiottech.in/product/74hc165-8bit-parallel-in-serial-out-shift-reg/ and also available at our store in Pudupakkam/Kelambakkam, Chennai-603103

2. When can I get this 74HC165 8-Bit Serial In/Parallel out Shift Register IC after placing the order?

RGRJ AIIoT TECHNOLOGIES will immediately ship and deliver the product within 1-3 working days.

Video Link: 74HCT165 8-bit Parallel-in/Serial Out Shift register