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PCF8574

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MCP23017 vs PCF8574: I2C GPIO Expander Comparison

Compare MCP23017 and PCF8574 I2C GPIO expanders by GPIO count, voltage, I2C speed, addressing, interrupts, pinout, applications, and replacement compatibility.

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MCP23017 vs PCF8574: I2C GPIO Expander Comparison
 Aug 16, 2026

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