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
  
                
PCA9555DBR


Interface - I/O Expanders Remote 16-Bit 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 2534
Ships to you
between Fri. 10 Apr to Wed. 15 Apr
Calender.png

AUD 1.8261

Multiples of: 1

16I2c, Serial, Smbus400 KHz 2.3 v to 5.5 V+ 85 C- 40 CSmd/SmtSSOP - 24Reel  
PCAL9554CPWJ


Interface - I/O Expanders 8it I SqrC-bus/SMBus low power I/O 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 2340
Ships to you
between Thu. 02 Apr to Mon. 06 Apr
Calender.png

AUD 1.8058

Multiples of: 1

         Reel  
PCA9539RPW,118


NXP Semiconductors Interface - IO Expanders I2C Bus and SMBus LwPwr IO Port 24Pin
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 2308
Ships to you
between Thu. 02 Apr to Mon. 06 Apr
Calender.png

AUD 2.4808

Multiples of: 1

16 I/OI2c, Serial, Smbus400 KHzWith Interrupt2.3 v to 5.5 V+ 85 C- 40 CSmd/SmtTSSOP - 24Reel  
MAX7301ATL+T


Interface - I/O Expanders 4-Wire-Interfaced, 2.5V to 5.5V, 20-Port and 28-Port 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.

Analog Devices 2304
Ships to you
between Fri. 10 Apr to Wed. 15 Apr
Calender.png

AUD 5.3632

Multiples of: 1

28 I/OSerial, Spi With Interrupt2.5 v to 5.5 V+ 125 C- 40 CSmd/Smt Reel  
PCA9539PW/Q900,118


Interface - I/O Expanders 16b I2C BUS INTERUPT
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 2302
Ships to you
between Thu. 02 Apr to Mon. 06 Apr
Calender.png

AUD 1.5039

Multiples of: 1

16 I/O    + 125 C- 40 CSmd/SmtTSSOP - 24Reel  
XL8574ATS


SSOP-20 I/O Expanders 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 2299
Ships to you
between Fri. 10 Apr to Wed. 15 Apr
Calender.png

AUD 0.5229

Multiples of: 1

            
XL9555QF24


16 400kHz I2C, SMBus QFN-24 I/O Expanders 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 2252
Ships to you
between Fri. 10 Apr to Wed. 15 Apr
Calender.png

AUD 0.4697

Multiples of: 1

            
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 2240
Ships to you
between Thu. 02 Apr to Mon. 06 Apr
Calender.png

AUD 1.3167

Multiples of: 1

8 I/OI2c, Serial1 MHzWith Interrupt2.3 v to 5.5 V+ 85 C- 40 CSmd/Smt Reel  
MCP23017-E/SO


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 1479
Ships to you
between Fri. 10 Apr to Wed. 15 Apr
Calender.png

AUD 1.8658

Multiples of: 1

   Yes        
PCA8575PW,118


Interface - I/O Expanders 16-BIT I2C FM QB 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 0
6 to 16 Weeks Calender.png

AUD 1.3707

Multiples of: 1

16 I/O   2.3 v to 5.5 V+ 85 C- 40 CSmd/SmtTSSOP - 24Reel  
  • 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