FainWan
5Pcs PCF8574 IO Expansion Board I/O Expander I2C-Bus Evaluation Development Module
*Price sourced from Amazon.com. Last updated 2026-05-26. Price and availability subject to change.
Bottom line: The 5Pcs PCF8574 IO Expansion Board I/O Expander I2C-Bus Evaluation Development Module is a niche pick — read recent reviews before buying in the emulation hardware category, priced around $15.99, rated 3.2★ across 6 verified Amazon reviews. Read recent reviews carefully before committing.
Features:Based on the I2C interface I / O expansion modules, using two I / O can be extended to eight I / O (up to simultaneous use 8 PCF8574, expanded to 64 I / O)Maximum Features: supports two types of Interface, access to the target board : Pin or row seat2 supports I2C bus cascade (via pin, row seat docking methods can be used simultaneously multiple I2C modules)Product Properties:Type: Modular/ Components and partsBand : noneInterface: I2CBoard Type: Pin or row seatSpecifications:Typical applications: for I / O resource constraints the MCU I / O expansionThe main resources: PCF8574, I2C…
SpecPicks Verdict
SpecPicks classifies FainWan 5Pcs PCF8574 IO Expansion Board I/O Expander I2C-Bus… as a niche pick — read recent reviews before buying in the emulation hardware category, based on 6 verified Amazon reviews and our ranking model that weights rating × review-volume × price-fit. FainWan's positioning sits within the broader category mid-tier. Use the Compare tool to put it side-by-side with two or three close alternatives before clicking through to Amazon.
Common buyer scenarios for emulation hardware of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the Amazon listing before purchase. Prices, stock, and Prime eligibility update directly from Amazon's catalog and may have moved since this page was last verified.
Pros & Cons
Pros
- ✓ Standard interface that can be expanded into a variety of development boards
- ✓ Backed by FainWan's warranty and support channels
- ✓ Ships via Amazon with Prime eligibility and the standard returns policy
Cons
- ✗ Below-average customer rating — read recent reviews before buying
- ✗ Limited review volume so far — fewer data points on long-term reliability
- ✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
- ✗ Price, stock, and Prime eligibility update from Amazon and may have changed since this page was last verified
Key Features
- Standard interface that can be expanded into a variety of development boards
- I2C serial port 8-bit parallel port, support expand into 8 × 8 = 64 at most
- PCF8574 IO expansion chip with I2C interface, 8-bit parallel port output
- Applicable to a variety of platforms including AVR / ARM
- Package included: 5Pcs PCF8574 IO Expansion Board I/O Expander I2C-Bus Evaluation Development Module
Full Specifications
| Brand | FainWan |
|---|---|
| Model Name | PCF8574-5Pcs |
| Unit Count | 1.0 Count |
| Model Number | PCF8574-5Pcs |
| Mfr Part Number | PCF8574-5Pcs |
| Processor Count | 1 |
| Total Usb Ports | 1 |
| Operating System | Linux |
| Package included | 5Pcs PCF8574 IO Expansion Board I/O Expander I2C-Bus Evaluation Development Module |
| Compatible Devices | AVR / ARM microcontrollers, various development boards |
| RAM Memory Technology | LPDDR |
| Connectivity Technology | I2C |
Ready to buy?
FainWan 5Pcs PCF8574 IO Expansion Board I/O Expander I2C-Bus Evaluation Development Module is available on Amazon with Prime shipping and the full Amazon returns policy. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-05-26. Price and availability subject to change.
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