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2pcs MCP23017 MCP 23017 16 Bit I/O Expander with Serial Interface 1.8V to 5.5V，SOIC-28.
Bridgold

2pcs MCP23017 MCP 23017 16 Bit I/O Expander with Serial Interface 1.8V to 5.5V，SOIC-28.

By SpecPicks Editorial · Verified 2026-07-22

$13.99
Buy on Amazon — $13.99 Compare to similar retro cpus

*Price sourced from Amazon.com. Last updated 2026-07-22. Price and availability subject to change.

Bottom line: The 2pcs MCP23017 MCP 23017 16 Bit I/O Expander with Serial Interface 1.8V to 5.5V，SOIC-28. is a niche pick — read recent reviews before buying in the retro cpus category, priced around $13.99. Read recent reviews carefully before committing.

The MCP23017 consists of multiple 8-bit configuration registers for input, output and polarity selection. The system master can enable the I/Os as either inputs or outputs by writing the I/O configuration bits (IODIRA/B).The data for each input or output is kept in the corresponding input or output register. The polarity of the Input Port register can be inverted with the Polarity Inversion register. All registers can be read by the system master.Package include:2Pcs *MCP23017

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SpecPicks Verdict

SpecPicks classifies 2pcs MCP23017 MCP 23017 16 Bit I/O Expander with Serial Interface… as a niche pick — read recent reviews before buying in the retro cpus category, based on our editorial and benchmark analysis and our ranking model that weights rating × review-volume × price-fit. Bridgold'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 retro cpus 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

  • ✓ 16-Bit Remote Bidirectional I/O Port.
  • ✓ Backed by Bridgold's warranty and support channels
  • ✓ Ships via Amazon with Prime eligibility and the standard returns policy

Cons

  • ✗ 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

  • 16-Bit Remote Bidirectional I/O Port.
  • High-Speed I2C Interface.
  • Configurable Interrupt Output Pins.
  • INTA and INTB Can Be Configured to Operate Independently or Together.
  • Polarity Inversion Register to Configure the Polarity of the Input Port Data.

Full Specifications

BrandBridgold
Package Dimensions‎4.96 x 2.68 x 0.39 inches

Ready to buy?

2pcs MCP23017 MCP 23017 16 Bit I/O Expander with Serial Interface 1.8V to 5.5V，SOIC-28. 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.

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*Price sourced from Amazon.com. Last updated 2026-07-22. Price and availability subject to change.

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2pcs MCP23017 MCP 23017 16 Bit I/O Expander with Serial Interface 1.8V to 5.5V，SOIC-28.
$13.99
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