74HC165D – 8-Bit Parallel-In Serial-Out Shift Register IC – SOIC-16 – NXP

The 74HC165D from NXP is a high-speed 8-bit parallel-in/serial-out (PISO) shift register designed for efficient data acquisition and expansion in digital systems. Built using high-performance Si-gate CMOS technology, it offers excellent noise immunity, low power consumption, and seamless compatibility with LSTTL logic levels.

This device supports asynchronous parallel loading of the D0–D7 inputs when the load pin is LOW and provides synchronous serial shifting when the load pin is HIGH. Data is shifted out on each positive clock transition, enabling easy cascading for wider shift register configurations. Housed in a compact SOIC-16 SMD package, the 74HC165D is ideal for microcontroller interfacing, keyboard scanning, signal expansion, and digital input capture applications.

Features / Specs

• 8-bit parallel-in/serial-out shift register

• Supply Voltage: 2V to 6V

• Synchronous serial input

• Asynchronous parallel load

• Low power, high-speed CMOS technology

• ESD protection included

• Operating Temperature: –40°C to +125°C

• JEDEC JEDSD 7A compliant

• Package: SOIC-16

• Make: NXP

Applications

• Microcontroller input expansion

• Keyboard and keypad scanning

• Digital signal acquisition

• Sensor data collection

• Parallel-to-serial data conversion

• Multi-stage shift register expansion

Package Includes

1 × 74HC165D – 8-Bit Parallel-In Serial-Out Shift Register – SOIC-16

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