Track Orders
Home
Login
Register
My Account
0
0 Items£0.00
ex VAT
ex VAT
  • Shop by Category
    • Featured Area
    • S

      Spring Clean

      H

      HDMI Finder

      C

      Computer World

      G

      Garden & Landscaping

      F

      Fans & Air Con

      P

      Pro Sound & Lighting

      M

      Makita Redemption

      B

      Batteries

      All Featured Areas
      • Back to Featured Area
      • Spring Clean
        • HDMI Finder
          • Computer World
            • Garden & Landscaping
              • Fans & Air Con
                • Pro Sound & Lighting
                  • Makita Redemption
                    • Batteries
                    • Tools
                    • Quick Buy
                      Quick Paste
                      Part Finder
                      Request a Quote
                      • Back to Tools
                      • Quick Buy
                        • Quick Paste
                          • Part Finder
                            • Request a Quote
                              • Resources
                              • Help
                                • Contact Us
                                • Technical Support
                                • Calibration Services
                                • Delivery Information
                                • FAQ's
                                • Careers
                                All Help
                                Publications
                                • Main Catalogues
                                • Latest Brochures
                                • Latest Emails
                                All Publications
                                Offers
                                • Weekly Deals
                                • Bargain Corner
                                • Email Offers
                                • Back to Resources
                                • Help
                                  • Back to Help
                                  • Contact Us
                                    • Technical Support
                                      • Calibration Services
                                        • Delivery Information
                                          • FAQ's
                                            • Careers
                                              • All Help
                                              • Publications
                                                • Back to Publications
                                                • Main Catalogues
                                                  • Latest Brochures
                                                    • Latest Emails
                                                      • All Publications
                                                      • Offers
                                                        • Back to Offers
                                                        • Weekly Deals
                                                          • Bargain Corner
                                                            • Email Offers
                                                            • Offers
                                                              • Contact Us
                                                                • Help
                                                                    1. Home
                                                                    2. Electronic & Electrical Components
                                                                    3. Semiconductors - ICs
                                                                    4. Driver & Interface ICs
                                                                    5. I/O Expanders

                                                                    I/O Expanders

                                                                    : 25 Products
                                                                    Apply Filters
                                                                    (0 selected)

                                                                    Manufacturer

                                                                    No. of Bits

                                                                    Interfaces

                                                                    Supply Voltage Min

                                                                    Supply Voltage Max

                                                                    IC Case / Package

                                                                    No. of Pins

                                                                    No. of I/O's

                                                                    Operating Temperature Min

                                                                    Operating Temperature Max

                                                                    Product Range

                                                                    Qualification

                                                                    Packaging

                                                                    Related Categories
                                                                    • Serial Communications RS232, RS485, RS422
                                                                    • CAN Interfaces
                                                                    • I/O Expanders
                                                                    • Gate Drivers
                                                                    • LED Driver ICs

                                                                    Interface Bridges

                                                                    Upgrade your electronic devices with our high-quality I/O Expanders. At CPC, we offer a wide range of industry-leading brands to choose from. Whether you need to increase the number of inputs or outputs, our I/O Expanders are designed to meet your needs. With easy installation and compatibility with various devices, you can enhance the functionality of your electronics effortlessly. Experience seamless communication between your devices and peripherals, enabling efficient data transfer and control. Don't miss out on the opportunity to optimize your devices' performance. Order your I/O Expanders today from CPC and enjoy the best price for top-notch quality.

                                                                    CAN Bus Devices
                                                                    USB Interfaces
                                                                    MOSFET Drivers
                                                                    Motor Drivers / Controllers
                                                                    Multi-Function Drivers

                                                                    Page

                                                                    1
                                                                    NXP PCA9534PW,118 - 8 Bit I2C Bus and SMBus Low Power I/O Port Expander with Interrupt, 400kHz, 2.3V, 5.5V, TSSOP

                                                                    NXP

                                                                    8 Bit I2C Bus and SMBus Low Power I/O Port Expander with Interrupt, 400kHz, 2.3V, 5.5V, TSSOP

                                                                    Order Code: SC19245

                                                                    Manufacturer Part No: PCA9534PW,118

                                                                    Data Sheet

                                                                    RoHS

                                                                    £1.43 EX VAT

                                                                    More Pricing...
                                                                    MICROCHIP MCP23008-E/SO - 8 Bit I/O Expander with Serial Interface, 1.7MHz,1.8V, 5.5V, SOIC

                                                                    MICROCHIP

                                                                    8 Bit I/O Expander with Serial Interface, 1.7MHz,1.8V, 5.5V, SOIC

                                                                    Order Code: SC19154

                                                                    Manufacturer Part No: MCP23008-E/SO

                                                                    Data Sheet

                                                                    RoHS

                                                                    £0.94 EX VAT

                                                                    More Pricing...
                                                                    TEXAS INSTRUMENTS PCF8574AN - Remote 8bit I/O Expander for I2C Bus with and 100KHz Bus Frequency in PDIP-16 Package

                                                                    TEXAS INSTRUMENTS

                                                                    Remote 8bit I/O Expander for I2C Bus with and 100KHz Bus Frequency in PDIP-16 Package

                                                                    Order Code: SC19369

                                                                    Manufacturer Part No: PCF8574AN

                                                                    RoHS

                                                                    £1.71 EX VAT

                                                                    More Pricing...
                                                                    MICROCHIP MCP23017-E/SP - 16bit I/O Expander with I2C Interface and 1.7MHz Bus Frequency in PDIP-28 Package

                                                                    MICROCHIP

                                                                    16bit I/O Expander with I2C Interface and 1.7MHz Bus Frequency in PDIP-28 Package

                                                                    Order Code: SC19156

                                                                    Manufacturer Part No: MCP23017-E/SP

                                                                    Data Sheet

                                                                    RoHS

                                                                    £1.18 EX VAT

                                                                    More Pricing...
                                                                    MICROCHIP MCP23S08-E/P - 8Bit Expander, I/O, SPI I/F, DIP18

                                                                    MICROCHIP

                                                                    8Bit Expander, I/O, SPI I/F, DIP18

                                                                    Order Code: SC12881

                                                                    Manufacturer Part No: MCP23S08-E/P

                                                                    Automotive Qualification Standard:-; Bus Frequency:10MHz; Chip Configuration:8bit; IC Interface Type:Serial, SPI; Interface Case…

                                                                    Data Sheet

                                                                    RoHS

                                                                    £1.30 EX VAT

                                                                    More Pricing...
                                                                    MICROCHIP MCP23016-I/SP - I/O Expander 16Bit, SPDIP28

                                                                    MICROCHIP

                                                                    I/O Expander 16Bit, SPDIP28

                                                                    Order Code: SC12784

                                                                    Manufacturer Part No: MCP23016-I/SP

                                                                    Automotive Qualification Standard:-; Bus Frequency:400kHz; Chip Configuration:16bit; IC Interface Type:I2C; Interface Case Style…

                                                                    Data Sheet

                                                                    RoHS

                                                                    £2.21 EX VAT

                                                                    More Pricing...
                                                                    MICROCHIP MCP23016-I/SS - I/O Expander 16Bit, SMD, SSOP28

                                                                    MICROCHIP

                                                                    I/O Expander 16Bit, SMD, SSOP28

                                                                    Order Code: SC12785

                                                                    Manufacturer Part No: MCP23016-I/SS

                                                                    Automotive Qualification Standard:-; Bus Frequency:400kHz; Chip Configuration:16bit; IC Interface Type:I2C; Interface Case Style…

                                                                    Data Sheet

                                                                    RoHS

                                                                    £2.26 EX VAT

                                                                    More Pricing...
                                                                    MICROCHIP MCP23017-E/SS - 16 Bit I/O Expander with Serial Interface, I2C, Serial, 1.8V, 5.5V, SSOP

                                                                    MICROCHIP

                                                                    16 Bit I/O Expander with Serial Interface, I2C, Serial, 1.8V, 5.5V, SSOP

                                                                    Order Code: SC19163

                                                                    Manufacturer Part No: MCP23017-E/SS

                                                                    Data Sheet

                                                                    RoHS

                                                                    £1.29 EX VAT

                                                                    More Pricing...
                                                                    MICROCHIP MCP23017T-E/SO - 16 Bit I/O Expander with Serial Interface, 16 Bit, 1.7MHz, I2C, 1.8V, 5.5V, SOIC

                                                                    MICROCHIP

                                                                    16 Bit I/O Expander with Serial Interface, 16 Bit, 1.7MHz, I2C, 1.8V, 5.5V, SOIC

                                                                    Order Code: SC19191

                                                                    Manufacturer Part No: MCP23017T-E/SO

                                                                    Data Sheet

                                                                    RoHS

                                                                    £1.13 EX VAT

                                                                    More Pricing...
                                                                    MICROCHIP MCP23017-E/SO - 16bit I/O Expander with I2C Interface and 1.7MHz Bus Frequency in SOIC-28 Package

                                                                    MICROCHIP

                                                                    16bit I/O Expander with I2C Interface and 1.7MHz Bus Frequency in SOIC-28 Package

                                                                    Order Code: SC19155

                                                                    Manufacturer Part No: MCP23017-E/SO

                                                                    Data Sheet

                                                                    RoHS

                                                                    £1.24 EX VAT

                                                                    More Pricing...
                                                                    TEXAS INSTRUMENTS TXS02612RTWR - SDIO Port I/O Expander With Voltage Level Translation, 60MHz, 1.1V to 3.6V, WQFN

                                                                    TEXAS INSTRUMENTS

                                                                    SDIO Port I/O Expander With Voltage Level Translation, 60MHz, 1.1V to 3.6V, WQFN

                                                                    Order Code: SC19371

                                                                    Manufacturer Part No: TXS02612RTWR

                                                                    RoHS

                                                                    £1.10 EX VAT

                                                                    More Pricing...
                                                                    MICROCHIP MCP23017T-E/SS - 16 Bit I/O Expander with Serial Interface, 16Bit, 1.7MHz, I2C, 1.8V 5.5V SSOP

                                                                    MICROCHIP

                                                                    16 Bit I/O Expander with Serial Interface, 16Bit, 1.7MHz, I2C, 1.8V 5.5V SSOP

                                                                    Order Code: SC19192

                                                                    Manufacturer Part No: MCP23017T-E/SS

                                                                    Data Sheet

                                                                    RoHS

                                                                    £1.16 EX VAT

                                                                    More Pricing...
                                                                    NXP PCA9536DP,118 - I/O Expander, 4bit, 400kHz, I2C, SMBus, 2.3V, 5.5V, TSSOP

                                                                    NXP

                                                                    I/O Expander, 4bit, 400kHz, I2C, SMBus, 2.3V, 5.5V, TSSOP

                                                                    Order Code: SC19237

                                                                    Manufacturer Part No: PCA9536DP,118

                                                                    Data Sheet

                                                                    RoHS

                                                                    £1.17 EX VAT

                                                                    More Pricing...
                                                                    MICROCHIP MCP23S17-E/SP - 16bit I/O Expander with SPI Interface and 10MHz Bus Frequency in PDIP-28 Package

                                                                    MICROCHIP

                                                                    16bit I/O Expander with SPI Interface and 10MHz Bus Frequency in PDIP-28 Package

                                                                    Order Code: SC19152

                                                                    Manufacturer Part No: MCP23S17-E/SP

                                                                    Data Sheet

                                                                    RoHS

                                                                    £1.43 EX VAT

                                                                    More Pricing...
                                                                    MICROCHIP MCP23S17-E/SO - 16bit I/O Expander with SPI Interface and 10MHz Bus Frequency in SOIC-28 Package

                                                                    MICROCHIP

                                                                    16bit I/O Expander with SPI Interface and 10MHz Bus Frequency in SOIC-28 Package

                                                                    Order Code: SC19157

                                                                    Manufacturer Part No: MCP23S17-E/SO

                                                                    Data Sheet

                                                                    RoHS

                                                                    £1.14 EX VAT

                                                                    More Pricing...
                                                                    MICROCHIP MCP23S17-E/SS - 16 Bit I/O Expander with Serial Interface, SPI, 1.8V, 5.5V, SSOP

                                                                    MICROCHIP

                                                                    16 Bit I/O Expander with Serial Interface, SPI, 1.8V, 5.5V, SSOP

                                                                    Order Code: SC19164

                                                                    Manufacturer Part No: MCP23S17-E/SS

                                                                    Data Sheet

                                                                    RoHS

                                                                    £1.53 EX VAT

                                                                    More Pricing...
                                                                    NXP PCF8574T/3,518 - Remote 8 Bit I/O Expander for I2C Bus with Interrupt, 100kHz, 2.5V, 6V, SOIC

                                                                    NXP

                                                                    Remote 8 Bit I/O Expander for I2C Bus with Interrupt, 100kHz, 2.5V, 6V, SOIC

                                                                    Order Code: SC19232

                                                                    Manufacturer Part No: PCF8574T/3,518

                                                                    Data Sheet

                                                                    RoHS

                                                                    £1.44 EX VAT

                                                                    More Pricing...
                                                                    NXP PCA9555PW,112 - I/O Expander, 16 bit, I2C, SMBus, 2.3V, 5.5V, TSSOP, 24 Pins

                                                                    NXP

                                                                    I/O Expander, 16 bit, I2C, SMBus, 2.3V, 5.5V, TSSOP, 24 Pins

                                                                    Order Code: SC20551

                                                                    Manufacturer Part No: PCA9555PW,112

                                                                    Data Sheet

                                                                    RoHS

                                                                    £1.28 EX VAT

                                                                    More Pricing...
                                                                    NXP PCAL6416AHF,128 - I/O Expander, 16 bit, I2C, 1.65V, 5.5V, HWQFN, 24 Pins

                                                                    NXP

                                                                    I/O Expander, 16 bit, I2C, 1.65V, 5.5V, HWQFN, 24 Pins

                                                                    Order Code: SC20401

                                                                    Manufacturer Part No: PCAL6416AHF,128

                                                                    Data Sheet

                                                                    RoHS

                                                                    £1.22 EX VAT

                                                                    More Pricing...
                                                                    NXP PCAL6408APWJ - I/O Expander, 8 bit, I2C, 1.65V, 5.5V, TSSOP, 16 Pins

                                                                    NXP

                                                                    I/O Expander, 8 bit, I2C, 1.65V, 5.5V, TSSOP, 16 Pins

                                                                    Order Code: SC20400

                                                                    Manufacturer Part No: PCAL6408APWJ

                                                                    Data Sheet

                                                                    RoHS

                                                                    £0.99 EX VAT

                                                                    More Pricing...
                                                                    TEXAS INSTRUMENTS PCF8574N - I/O Expander, 8bit, 100kHz, I2C, 2.5V, 6V, DIP

                                                                    TEXAS INSTRUMENTS

                                                                    I/O Expander, 8bit, 100kHz, I2C, 2.5V, 6V, DIP

                                                                    Order Code: SC19370

                                                                    Manufacturer Part No: PCF8574N

                                                                    RoHS

                                                                    £1.93 EX VAT

                                                                    More Pricing...
                                                                    MICROCHIP MCP23008-E/SS - 8 Bit I/O Expander with Serial Interface, I2C, 1.8V, 5.5V, 1.7MHz, SSOP

                                                                    MICROCHIP

                                                                    8 Bit I/O Expander with Serial Interface, I2C, 1.8V, 5.5V, 1.7MHz, SSOP

                                                                    Order Code: SC19168

                                                                    Manufacturer Part No: MCP23008-E/SS

                                                                    Data Sheet

                                                                    RoHS

                                                                    £1.13 EX VAT

                                                                    More Pricing...
                                                                    MICROCHIP MCP23S09-E/SO - I/O Expander, 8Bit, SPI, 18SOIC

                                                                    MICROCHIP

                                                                    I/O Expander, 8Bit, SPI, 18SOIC

                                                                    Order Code: SC12780

                                                                    Manufacturer Part No: MCP23S09-E/SO

                                                                    Automotive Qualification Standard:AEC-Q100; Bus Frequency:10MHz; Chip Configuration:8bit; IC Interface Type:SPI; Interface Case …

                                                                    Data Sheet

                                                                    RoHS

                                                                    £0.89 EX VAT

                                                                    More Pricing...
                                                                    MICROCHIP MCP23S08-E/SS - I/O Expander, SPI, 8Bit, 23S08

                                                                    MICROCHIP

                                                                    I/O Expander, SPI, 8Bit, 23S08

                                                                    Order Code: SC12778

                                                                    Manufacturer Part No: MCP23S08-E/SS

                                                                    Automotive Qualification Standard:-; Bus Frequency:10MHz; Chip Configuration:8bit; IC Interface Type:Serial, SPI; Interface Case…

                                                                    Data Sheet

                                                                    RoHS

                                                                    £0.85 EX VAT

                                                                    More Pricing...
                                                                    MICROCHIP MCP23008-E/P - I/O Expander 8Bit I2C, PDIP18

                                                                    MICROCHIP

                                                                    I/O Expander 8Bit I2C, PDIP18

                                                                    Order Code: SC12781

                                                                    Manufacturer Part No: MCP23008-E/P

                                                                    Automotive Qualification Standard:-; Bus Frequency:1.7MHz; Chip Configuration:8bit; IC Interface Type:I2C, Serial; Interface Cas…

                                                                    Data Sheet

                                                                    RoHS

                                                                    £1.12 EX VAT

                                                                    More Pricing...

                                                                    Page

                                                                    1
                                                                    Recommended Sections
                                                                    Adhesives, Sealants & Tapes
                                                                    Batteries
                                                                    Builders Tools
                                                                    CCTV
                                                                    AV Installation
                                                                    Hand Tools
                                                                    Heating
                                                                    HDMI Cables
                                                                    Ladders, Lifting & Trucks
                                                                    LED Lights
                                                                    Optoelectronics, LEDs & Displays
                                                                    Power Tools
                                                                    Professional Sound & Lighting
                                                                    Ironmongery, Screws & Fittings
                                                                    Transformers
                                                                    TV Brackets
                                                                    Guides
                                                                    Electric Heating
                                                                    HDMI Finder
                                                                    Energy Saving
                                                                    TV Buying Guide
                                                                    LED Lighting
                                                                    Gardening & Landscaping
                                                                    Mesh Wi-Fi
                                                                    Trending
                                                                    Raspberry Pi 5
                                                                    Lighting
                                                                    Capacitors
                                                                    Amplifiers
                                                                    CCTV Cameras
                                                                    Raspberry Pi
                                                                    Weller
                                                                    Rechargeable Batteries
                                                                    Site Resources
                                                                    About Us
                                                                    Careers
                                                                    Products
                                                                    Contact Us
                                                                    Services
                                                                    Calibration Services
                                                                    Certification
                                                                    Manufacturers
                                                                    Sitemap
                                                                    Terms of Purchase
                                                                    Product Recalls
                                                                    Ukraine-Russia Conflict
                                                                    Modern Slavery
                                                                    Publications
                                                                    Publications
                                                                    Main Catalogue
                                                                    Latest Brochures
                                                                    Offers
                                                                    Latest Email Offers
                                                                    Weekly Deals
                                                                    Bargain Corner
                                                                    My Account
                                                                    Apply for a Trade Account
                                                                    Managing Your Account
                                                                    Order History
                                                                    My Quotes
                                                                    Saved Baskets
                                                                    My Profile
                                                                    Change Password
                                                                    My Addresses
                                                                    Product Notifications
                                                                    Marketing Preferences
                                                                    Contact
                                                                    Customer Service: 03447 880088
                                                                    Contact Us sales@cpc.co.uk
                                                                    Component House
                                                                    Fulwood
                                                                    Preston
                                                                    PR2 9PP
                                                                    Norton Secured
                                                                    bsi Certified
                                                                    ECIA Member
                                                                    UKAS
                                                                    Trustpilot
                                                                    Visa
                                                                    Mastercard
                                                                    American Express
                                                                    PayPal
                                                                    Trade Account
                                                                    Facebook
                                                                    Linkedin
                                                                    Privacy Statement
                                                                    Legal & Copyright Notices
                                                                    Terms of Access
                                                                    Terms of Purchase
                                                                    An Avnet Company © 2026 Premier Farnell Limited. All Rights Reserved.
                                                                    CPC - Combined Precision Components is a trading name of Premier Farnell UK Limited.
                                                                    Customer Service: 03447 88 00 88 | Registered number: 860093 | Registered office: 150 Armley Road, Leeds, LS12 2QQ, England.