Microchip Technology MCP23S17-E/SS I/O Expander
Best I/O expander for space-constrained electronics projects.
This 16-bit expander is the ultimate space-saver for projects running low on microcontroller pins. While it demands a bit of SPI configuration legwork, the sheer flexibility of its independently addressable I/O makes it an essential tool for scaling complex digital interfaces in tight enclosures.
$112.53
at
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Who it's for
- Engineers needing extra pins for complex sensor arrays
- Developers requiring high-speed data throughput for responsive systems
- Programmers looking to optimize code by eliminating constant polling
Who should skip it
- Designers working with microcontrollers that have limited available pins
- Hobbyists lacking the equipment for fine-pitch surface mount soldering
- Engineers requiring ultra-fast bit-banging performance for time-critical tasks
Performance breakdown
Interface Speed
The 10MHz SPI throughput handles high-speed data transfers with ease.
I/O Density
Sixteen bits of expansion in a compact footprint maximizes board efficiency.
Configuration Flexibility
Individual pin control and polarity inversion offer exceptional design versatility.
Voltage Compatibility
Reliable 5.5V operation integrates seamlessly into most standard logic systems.
Form Factor
The SSOP package is perfect for space-constrained modern circuit designs.
Integration Ease
Standard SPI protocol ensures straightforward implementation for most microcontroller projects.
Key Specs
Interface
SPI
Pins
28-Pin
Operating Voltage
5.5 V
Maximum Speed
10MHz
Package Type
SSOP 28-Pin
Model Number
MCP23S17-E/SS
Resolution
16 bits
Function Type
Logic Gate
Clock Speed
10 MHz
Number of Pins
28
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