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
First...4647484950...
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
  
                
PCA9539RBS,118


Interface - I/O Expanders I2C Bus and SMBus LwPwr I/O 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 0
6 to 16 Weeks Calender.png

AUD 1.4122
Multiples of: 7

16 I/OI2c, Smbus With Interrupt2.3 v to 5.5 V+ 85 C- 40 CSmd/SmtHVQFN - 24Reel  
PCA9557D.112


Interface; I/O expander; I2C, SMBus; Channels:8; 2.3÷5.5VDC; SO16
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 1.4143
Multiples of: 1

            
PCA9554APW


Interface - I/O Expanders PCA9554ARem 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 0
6 to 16 Weeks Calender.png

AUD 1.4154
Multiples of: 450

8I2c, Smbus400 KHzYes2.3 v to 5.5 V+ 85 C- 40 CSmd/SmtTSSOP - 16Tube  
PCA9555BS


IC, IO PORT I2C/SMBUS 16BIT, 24HVQFN
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 1.416
Multiples of: 1

         Each  
IS31IO7325-GRLS4


Interface - I/O Expanders Multi-function I/O Driver, SOP-24 (10.0mm x 15.0mm), Tube
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.

ISSI 0
6 to 16 Weeks Calender.png

AUD 1.4212
Multiples of: 1

         Tube  
PCA9555DB


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 0
6 to 16 Weeks Calender.png

AUD 1.423
Multiples of: 1

16I2c, Serial, Smbus400 KHzWith Interrupt2.3 v to 5.5 V+ 85 C- 40 CSmd/SmtSSOP - 24Tube  
PCF8574DWRE4


Texas Instruments Interface - IO Expanders Remote 8-Bit IO 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 0
6 to 16 Weeks Calender.png

AUD 1.4334
Multiples of: 1

8 I/O 100 KHz 2.5 v to 6 V+ 85 C- 40 CSmd/SmtSOIC - 16 WideReel  
PCA9535CPW,112


NXP Semiconductors Interface - IO Expanders 16BIT I2C FM TP 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 0
6 to 16 Weeks Calender.png

AUD 1.44
Multiples of: 1

         Tube  
PCA9539D,112


NXP Semiconductors Interface - IO Expanders I2CSMBUS 16BIT 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 0
6 to 16 Weeks Calender.png

AUD 1.4413
Multiples of: 1

16 I/O   2.3 v to 5.5 V+ 85 C- 40 CSmd/SmtSOT - 137Tube  
PCA9557PWRG4


I2C/SMBus GPIO Expander 5.5V 16-Pin TSSOP T/R
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 0
6 to 16 Weeks Calender.png

AUD 1.4455
Multiples of: 2000

8 I/OI2c, Serial, Smbus  2.5 v to 6 V+ 85 C- 40 CSmd/SmtTSSOP - 16Reel  
  • NoFilter
  • Contains
  • DoesNotContain
  • StartsWith
  • EndsWith
  • EqualTo
  • NotEqualTo
  • GreaterThan
  • LessThan
  • GreaterThanOrEqualTo
  • LessThanOrEqualTo
  • Between
  • NotBetween
  • IsEmpty
  • NotIsEmpty
  • IsNull
  • NotIsNull
  • Custom
First...4647484950...

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

Resources

Company

Support

 

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.
  +61 8 9358 9358 |   sales@x-on.com.au |   Chat
 
Policies | Terms and Conditions | Sitemap

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