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
  
                
PCF8574RGTR


Interface - I/O Expanders Remote 8-Bit I/O Expander for I2C-Bus
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 1538
Ships to you
between Fri. 10 Apr to Wed. 15 Apr
Calender.png

AUD 1.302

Multiples of: 1

8 100 KHz 2.5 v to 6 V+ 85 C- 40 CSmd/SmtVQFN - 16Reel  
TCA6408APWR


Interface - I/O Expanders Lo-Vltg 8B I2C & 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 1367
Ships to you
between Fri. 10 Apr to Wed. 15 Apr
Calender.png

AUD 0.7254

Multiples of: 1

8 I/OI2c, Serial, Smbus  1.65 v to 5.5 V+ 85 C- 40 CSmd/SmtTSSOP - 16Cut Tape  
PCAL9538ABSHP


Interface - IO Expanders 8it I SqrC-busSMBus low power 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 638
Ships to you
between Thu. 02 Apr to Mon. 06 Apr
Calender.png

AUD 2.1346

Multiples of: 1

         Reel  
PCA9554PW.112


Interface - I/O Expanders I2C I/O EXPANDER GP
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 592
Ships to you
between Fri. 27 Mar to Thu. 02 Apr
Calender.png

AUD 2.3821

Multiples of: 1

            
PCA9557DR


Interface - I/O Expanders Remote 8B I2C & SMBus Lo-Pwr I/O Exp
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 579
Ships to you
between Fri. 10 Apr to Wed. 15 Apr
Calender.png

AUD 1.6871

Multiples of: 1

8 I/OI2c, Serial, Smbus400 KHz 2.5 v to 6 V+ 85 C- 40 CSmd/SmtSOIC - 16Reel  
XD8574AP


Interface - I/O Expanders DIP-16 RoHS
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.

XINLUDA 574
Ships to you
between Fri. 10 Apr to Wed. 15 Apr
Calender.png

AUD 0.5531

Multiples of: 1

   -        
MCP23009T-E/SS


Interface - I/O Expanders 8-bit I/O Expander 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 570
Ships to you
between Thu. 02 Apr to Mon. 06 Apr
Calender.png

AUD 1.9997

Multiples of: 1

        SSOP - 20Reel  
MCP23S18-E/SP


Interface - I/O Expanders 16B I/O Expander SPI 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 567
Ships to you
between Fri. 27 Mar to Thu. 02 Apr
Calender.png

AUD 2.4254

Multiples of: 15

16 I/OSerial, SPI With Interrupt1.8 V to 5.5 V+ 125 C- 40 CThrough HolePDIP - 28Tube  
MCP23008-E/SS


IC: expander; 8bit I/O port; I2C; SSOP20; 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 351
Ships to you
between Fri. 10 Apr to Wed. 15 Apr
Calender.png

AUD 1.7038

Multiples of: 1

8 I/OI2C, Serial With Interrupt1.8 V to 5.5 V+ 125 C- 40 CSMD/SMTSSOP - 20Tube  
MCP23S08-E/SS


IC: expander; 8bit I/O port; SPI; SSOP20; 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 292
Ships to you
between Fri. 27 Mar to Thu. 02 Apr
Calender.png

AUD 1.936

Multiples of: 1

            
  • 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