{"product_id":"74hc595-serial-to-parallel-io-expansion-module-microcontroller","title":"74HC595 Serial to Parallel IO Expansion Module | MCU GPIO","description":"\u003ch2\u003e74HC595 Serial-to-Parallel IO Expansion Module\u003c\/h2\u003e\n\u003cp\u003eExpand your microcontroller's output capabilities with the \u003cstrong\u003e74HC595 Serial-to-Parallel IO Expansion Module\u003c\/strong\u003e. Whether you're driving LED arrays, controlling shift registers, or building complex digital circuits, this compact SMD module lets you scale from 3 to 24 output pins using just 3 serial input lines — saving precious GPIO resources on your Arduino, ESP32, Raspberry Pi, or any 5V microcontroller platform.\u003c\/p\u003e\n\n\u003cp\u003eAvailable in convenient multi-packs (1, 2, 5, 10, or 20 pieces), this module is an essential component for hobbyists, makers, and professional embedded developers alike.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIC:\u003c\/strong\u003e 74HC595 shift register (SMD package)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSupply Voltage:\u003c\/strong\u003e 5V\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Type:\u003c\/strong\u003e SMD (Surface Mount Device)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFunction:\u003c\/strong\u003e Serial-in, parallel-out — expands 3 control pins into up to 8 (or 24 with daisy-chaining) output pins\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e LED control, port expansion, digital output multiplexing\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCondition:\u003c\/strong\u003e Brand new\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuantity Options:\u003c\/strong\u003e 1pc, 2pcs, 5pcs, 10pcs, 20pcs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy Choose the 74HC595 IO Expansion Module?\u003c\/h3\u003e\n\u003cp\u003eThe 74HC595 is a trusted, industry-standard shift register chip that enables \u003cstrong\u003eserial-to-parallel conversion\u003c\/strong\u003e. Instead of dedicating multiple microcontroller pins to individual outputs, you send data serially and the module latches it to parallel outputs simultaneously. This is ideal for:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDriving LED strips and matrix displays\u003c\/li\u003e\n  \u003cli\u003eControlling multiple relays or digital outputs\u003c\/li\u003e\n  \u003cli\u003eCascading modules for large-scale pin expansion projects\u003c\/li\u003e\n  \u003cli\u003ePrototyping and breadboard-friendly embedded designs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCompatible With\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eArduino (Uno, Mega, Nano, etc.)\u003c\/li\u003e\n  \u003cli\u003eESP8266 \/ ESP32\u003c\/li\u003e\n  \u003cli\u003eRaspberry Pi (via SPI\/GPIO)\u003c\/li\u003e\n  \u003cli\u003eSTM32 and other 5V MCU platforms\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/round-aluminum-wire-diy-jewelry-making-1mm-3mm\"\u003eRound Aluminum Wire 1mm–3mm | DIY Jewelry Making Wire\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/glow-in-the-dark-natural-stone-round-beads-diy-jewelry-making\"\u003eGlow in the Dark Natural Stone Round Beads | DIY Jewelry Making\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.epa.gov\/recycle\/used-lithium-ion-batteries\" target=\"_blank\" rel=\"noopener\"\u003eEPA guidance on lithium-ion battery handling\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What does the 74HC595 IO Expansion Module do?\u003c\/h4\u003e\n\u003cp\u003eA: The 74HC595 Serial-to-Parallel IO Expansion Module converts a 3-wire serial input (data, clock, latch) from your microcontroller into up to 8 parallel output pins. Multiple modules can be daisy-chained to expand to 16, 24, or more outputs, making it perfect for LED control and digital output applications.\u003c\/p\u003e\n\u003ch4\u003eQ: Is the 74HC595 module compatible with Arduino and Raspberry Pi?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! The module operates at 5V and is fully compatible with Arduino boards, Raspberry Pi (with level shifting if needed), ESP32, ESP8266, STM32, and most standard 5V microcontroller platforms. It interfaces easily via SPI or bit-banged serial communication.\u003c\/p\u003e\n\u003ch4\u003eQ: How many output pins can I get by daisy-chaining multiple 74HC595 modules?\u003c\/h4\u003e\n\u003cp\u003eA: Each 74HC595 module provides 8 parallel output pins. By connecting the serial output (Q7') of one module to the data input of the next, you can chain as many modules as needed. For example, 3 modules chained together give you 24 output pins — all controlled with just 3 microcontroller pins.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What does the 74HC595 IO Expansion Module do?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The 74HC595 Serial-to-Parallel IO Expansion Module converts a 3-wire serial input (data, clock, latch) from your microcontroller into up to 8 parallel output pins. Multiple modules can be daisy-chained to expand to 16, 24, or more outputs, making it perfect for LED control and digital output applications.\"}}, {\"@type\": \"Question\", \"name\": \"Is the 74HC595 module compatible with Arduino and Raspberry Pi?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes! 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