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.

Enable Filter
Manufacturer
Reset
Number of I/Os
Reset
Interface Type
Reset
Maximum Operating Frequency
Reset
Interrupt Output
Reset
Operating Supply Voltage
Reset
Maximum Operating Temperature
Reset
Minimum Operating Temperature
Reset
Mounting Style
Reset
Package / Case
Reset
Packaging
Reset
Qualification
Reset
Image  Information Image Stock Code(▲▼)Description
Manufacturer
Availability ⓘ (▲▼)Price(AUD

(Ex. GST)(▲▼)
Enter Qty Number of I/OsInterface TypeMaximum Operating FrequencyInterrupt OutputOperating Supply VoltageMaximum Operating TemperatureMinimum Operating TemperatureMounting StylePackage / CasePackagingESD ProtectionQualification
  
                
PCA9536D,118


Interface - I/O Expanders I2C/SMBUS 4BIT GPIO
Icon ROHS
This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

NXP 2902
Ships to you
between Wed. 25 Feb to Mon. 02 Mar
Calender.png

AUD 0.8674

Multiples of: 1

4 I/OI2c, Smbus Without Interrupt2.3 v to 5.5 V+ 85 C- 40 CSmd/SmtSO - 8Reel  
PCA8574APW,118


Interface - I/O Expanders 8-BIT I2C FM QB
Icon ROHS
This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

NXP 2879
Ships to you
between Tue. 17 Feb to Thu. 19 Feb
Calender.png

AUD 1.1576

Multiples of: 1

    2.3 v to 5.5 V+ 85 C- 40 CSmd/SmtTSSOP - 16Reel  
TCA6424ARGJR


Interface - I/O Expanders Lo-Vltg 24B I2C and SMBus I/O Expander
Icon ROHS
This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

Texas Instruments 2835
Ships to you
between Wed. 25 Feb to Mon. 02 Mar
Calender.png

AUD 0.8494

Multiples of: 1

24I2c, Serial, Smbus400 KHz 1.65 v to 5.5 V+ 85 C- 40 CSmd/SmtUQFN - 32Reel  
PCF8574AT/3,518


Interface - I/O Expanders EXTENDED I/O EXPANDER I2C
Icon ROHS
This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

NXP 2827
Ships to you
between Wed. 25 Feb to Mon. 02 Mar
Calender.png

AUD 1.5297

Multiples of: 1

8 I/O   2.5 v to 6 V+ 85 C- 40 CSmd/SmtSO - 16Reel  
MCP23008-E/P


IC: expander; 8bit I/O port; I2C; DIP18; 1.8÷5.5VDC
Icon ROHS
This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

Microchip 2813
Ships to you
between Wed. 11 Feb to Tue. 17 Feb
Calender.png

AUD 1.9963

Multiples of: 25

8 I/OI2C, Serial With Interrupt1.8 V to 5.5 V+ 125 C- 40 CThrough HolePDIP - 18Tube  
PCA9538APWJ


Interface - I/O Expanders 8bit I2C IO Port
Icon ROHS
This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

NXP 2723
Ships to you
between Tue. 17 Feb to Thu. 19 Feb
Calender.png

AUD 1.1919

Multiples of: 1

  100 KHz 1.65 v to 5.5 V+ 85 C- 40 CSmd/SmtTSSOP - 16Reel  
PCA9554AD,118


Interface - I/O Expanders 8-BIT I2C FM TP GPIO INT PU
Icon ROHS
This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

NXP 2670
Ships to you
between Tue. 17 Feb to Thu. 19 Feb
Calender.png

AUD 1.2811

Multiples of: 1

8 I/OI2c, Smbus  2.3 v to 5.5 V+ 85 C- 40 CSmd/SmtSO - 16Reel  
PCA9674APW,118


Interface - IO Expanders 8-BIT I2C FM QB
Icon ROHS
This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

NXP 2651
Ships to you
between Tue. 17 Feb to Thu. 19 Feb
Calender.png

AUD 1.3149

Multiples of: 1

8 I/OI2c, Serial1 MHzWith Interrupt2.3 v to 5.5 V+ 85 C- 40 CSmd/Smt Reel  
MCP23S08-E/SO


Microchip Technology Interface - IO Expanders InOut SPI int
Icon ROHS
This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

Microchip 2648
Ships to you
between Wed. 11 Feb to Tue. 17 Feb
Calender.png

AUD 2.1642

Multiples of: 42

8 I/OSerial, Spi10 MHzWith Interrupt1.8 v to 5.5 V+ 125 C- 40 CSmd/SmtSOIC - 18Tube  
MCP23017-E/ML


Interface - I/O Expanders 16bit Input/Output Exp I2C interface
Icon ROHS
This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

Microchip 2629
Ships to you
between Wed. 25 Feb to Mon. 02 Mar
Calender.png

AUD 2.077

Multiples of: 1

    1.8 V to 5.5 V+ 125 C- 40 CSMD/SMTQFN - 28Tube  
  • NoFilter
  • Contains
  • DoesNotContain
  • StartsWith
  • EndsWith
  • EqualTo
  • NotEqualTo
  • GreaterThan
  • LessThan
  • GreaterThanOrEqualTo
  • LessThanOrEqualTo
  • Between
  • NotBetween
  • IsEmpty
  • NotIsEmpty
  • IsNull
  • NotIsNull
  • Custom

Looking for help? Visit our FAQ's Section to answer to all your questions

 

X-ON Worldwide Electronics

Welcome To X-ON ELECTRONICS
For over three decades, we have been advocating and shaping the electronic components industry. Our management complements our worldwide business scope and focus. We are committed to innovation, backed by a strong business foundation. If you need a trustworthy supplier of electronic components for your business – look no further.
 

Copyright ©2026  X-ON Electronic Services. All rights reserved.
Please ensure you have read and understood our Terms & Conditions before purchasing.
All prices exclude GST.

Image for all the cards that are accepted Image for all the cards that are accepted Image for all the cards that are accepted Image for all the cards that are accepted Image for all the cards that are accepted