About Interface - I/O Expanders

An interface I/O expander is a type of electronic circuit that is used to increase the number of input/output ports available in an embedded system. These expanders allow for more efficient use of the limited I/O ports available in most microcontrollers. By adding additional interface I/O ports, the need for extra I/O components such as additional LEDs, dials, switches, and relays can be eliminated. Additionally, by including an interface I/O expander, more complex embedded systems can be designed, using less overall components. The interface I/O expander itself will typically consist of multiple parallel ports, which can be used to communicate to and from the microcontroller, as well as multiple external devices. Common interface I/O expanders include serial-to-parallel converters, parallel-to-serial converters, shift registers, port expanders and more.

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    PCAL6416AHF,128


    		Interface - I/O Expanders 16-bit I2C-busSMBus Low Voltage
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    		NXP 257734
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    USD 0.7245
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    		  100 KHz 1.65 v to 5.5 V+ 85 C- 40 CSmd/SmtHWQFN - 24Reel  
    PCAL6408ABSHP


    		Interface - I/O Expanders 8bit I2C/SMBus IO Expander w/Interrupt
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    		NXP 157290
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    USD 0.716
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    		8 I/OI2c, Smbus100 KHzYes1.65 v to 5.5 V+ 85 C- 40 CSmd/SmtHVQFN - 16Reel  
    PCA9536DP,118


    		Interface - I/O Expanders I2C/SMBUS 4BIT GPIO
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    		NXP 106839
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    USD 0.6647
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    		4 I/OI2c, Smbus Without Interrupt2.3 v to 5.5 V+ 85 C- 40 CSmd/SmtTSSOP - 8Reel  
    PCAL6408APWJ


    		Interface - I/O Expanders 8bit I2C/SMBus IO Expander w/Interrupt
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    		NXP 101853
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    USD 0.652
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    		8 I/OI2c, Serial, Smbus400 KHzWith Interrupt1.65 v to 5.5 V+ 85 C- 40 CSmd/SmtTSSOP - 16Reel  
    PCA6408AHKX


    		NXP Semiconductors Interface - IO Expanders 8bit IO Expander Low Voltage XQFN
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    		NXP 100266
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    USD 0.6279
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    		  100 KHz 1.65 v to 5.5 V+ 85 C- 40 CSmd/SmtXQFN - 16Reel  
    PCAL6524HEAZ


    		Interface - I/O Expanders PCAL6524HE/HUQFN32/REEL 7" Q2/
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    		NXP 90547
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    USD 1.0662
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    		24 I/OI2c, Serial, Smbus With Interrupt1.65 v to 5.5 V+ 85 C- 40 CSmd/SmtHUQFN - 32Reel  
    PCA9536TK,118


    		Interface - I/O Expanders 4-BIT I2C FM TP GPIO
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    		NXP 86312
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    USD 0.6992
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    		4 I/OI2c, Serial, Smbus Without Interrupt2.3 v to 5.5 V+ 85 C- 40 CSmd/SmtHVSON - 8Reel  
    PCA9555BS,118


    		NXP Semiconductors Interface - IO Expanders I2CSMBUS 16BIT GPIO
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    		NXP 80529
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    USD 1.2075
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    		16 I/O   2.3 V to 5.5 V+ 85 C- 40 CSMD/SMTHVQFN - 24Cut Tape , Reel  
    PCAL6416APW,118


    		Interface - I/O Expanders 16b I2C BUS INTERUPT
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    		NXP 78262
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    USD 0.7107
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    		  100 KHz 1.65 v to 5.5 V+ 85 C- 40 CSmd/SmtTSSOP - 24Reel  
    PCA9570GMH


    		NXP Semiconductors Interface - IO Expanders Low voltage output expander
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    		NXP 78096
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    USD 0.3082
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    		4 I/OI2c, Serial1 MHzWith Interrupt3.6 V+ 85 C- 40 CSmd/SmtXQFN - 8Reel  
    1 2345...