5-Pack 74LS165 DIP-16 8-Bit Shift Register IC SN74LS165AN

$7.49 $8.63

5-Pack 74LS165 DIP-16 Shift Register ICs – SN74LS165AN / HD74LS165AP

Upgrade your electronics projects with this convenient 5-piece lot of 74LS165 8-bit Parallel-In / Serial-Out Shift Register ICs. Compatible with models SN74LS165AN and HD74LS165AP, these DIP-16 package chips are a staple component for hobbyists, engineers, and makers working with microcontrollers such as ESP32, ESP8266, STM32, and other DIY platforms.

Whether you're expanding GPIO pins, building input multiplexers, or prototyping on a breadboard or PCB, the 74LS165 delivers reliable parallel-to-serial data conversion in a compact, industry-standard footprint. Made in China.

Key Features

Quantity: 5 ICs per lot — great value for prototyping and spares
Part Numbers: SN74LS165AN / HD74LS165AP (interchangeable)
Function: 8-bit Parallel-In, Serial-Out (PISO) Shift Register
Package: DIP-16 (Dual In-line Package, 16 pins) — breadboard and PCB friendly
Logic Family: 74LS TTL — industry-standard, widely supported
Compatible Platforms: ESP32, ESP8266, STM32, Arduino, and other MCU-based DIY kits
High-Concern Chemicals: None
Condition: Brand new

What Is a 74LS165 Shift Register?

The 74LS165 is an 8-bit parallel-load shift register that reads 8 digital inputs simultaneously and outputs them one bit at a time over a serial line. This makes it ideal for expanding the number of digital inputs on any microcontroller without consuming additional GPIO pins — perfect for button matrices, sensor arrays, and data acquisition circuits.

Typical Applications

GPIO pin expansion on microcontroller boards
Button or switch matrix input scanning
SPI/serial communication interfacing
PCB prototyping and DIY electronics kits
Data acquisition and digital logic design

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Frequently Asked Questions

Q: What is the difference between SN74LS165AN and HD74LS165AP?

A: The SN74LS165AN (Texas Instruments) and HD74LS165AP (Hitachi) are functionally equivalent 8-bit parallel-in serial-out shift register ICs in the 74LS logic family. They share the same pinout, electrical characteristics, and DIP-16 package, making them fully interchangeable in most circuit designs.

Q: Is the 74LS165 compatible with Arduino, ESP32, and STM32?

A: Yes. The 74LS165 operates at standard TTL voltage levels and is commonly used with Arduino, ESP32, ESP8266, STM32, and similar microcontroller platforms for expanding digital input capabilities via SPI or bit-banged serial communication.

Q: Is this a DIP package suitable for breadboards?

A: Absolutely. The DIP-16 (Dual In-line Package, 16-pin) format is designed to plug directly into standard breadboards and through-hole PCB sockets, making it ideal for prototyping and permanent PCB installations alike.