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I/O Expanders

Browse available I/O Expanders part numbers with manufacturer references, stock information, pricing, datasheets and key specifications. Use the table below to compare options for your project.

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Photo Mfr. Part # Availability Price Quantity Datasheet Series Package/Case Packaging Product Status Programmable Number of I/O Interface Interrupt Output Features Output Type Current - Output Source/Sink Clock Frequency Voltage - Supply Operating Temperature Grade Qualification Mounting Type Supplier Device Package
PCA6408ABSHP NXP USA Inc.

PCA6408ABSHP

IC XPND 400KHZ I2C SMBUS 16HVQFN

NXP USA Inc.

14,744 -
Datasheet - 16-VFQFN Exposed Pad Tape & Reel (TR) Active Not Verified 8 I2C, SMBus Yes POR Push-Pull 10mA, 25mA 400 kHz 1.65V ~ 5.5V -40°C ~ 85°C - - Surface Mount 16-HVQFN (3x3)
TCA9554ADWR Texas Instruments

TCA9554ADWR

IC XPNDR 400KHZ I2C SMBUS 16SOIC

Texas Instruments

1,177 -
Datasheet - 16-SOIC (0.295", 7.50mm Width) Tape & Reel (TR) Active Not Verified 8 I2C, SMBus Yes POR Push-Pull - 400 kHz 1.65V ~ 5.5V -40°C ~ 85°C - - Surface Mount 16-SOIC
PCAL6416AEVJ NXP USA Inc.

PCAL6416AEVJ

IC XPND 400KHZ I2C SMBUS 24VFBGA

NXP USA Inc.

3,542 -
Datasheet Agile 24-VFBGA Tape & Reel (TR) Active Not Verified 16 I2C, SMBus Yes POR Open Drain, Push-Pull 10mA, 25mA 400 kHz 1.65V ~ 5.5V -40°C ~ 85°C - - Surface Mount 24-VFBGA (3x3)
TCAL6408RSVR Texas Instruments

TCAL6408RSVR

TCAL6408RSVR

Texas Instruments

1,013 -
Datasheet - 16-UFQFN Tape & Reel (TR) Active - 8 I2C, SMBus Yes POR Open Drain, Push-Pull 10mA, 25mA 1 MHz 1.08V ~ 3.6V -40°C ~ 125°C - - Surface Mount 16-UQFN (2.6x1.8)
PCA9554ARGTR Texas Instruments

PCA9554ARGTR

IC XPNDR 400KHZ I2C SMBUS 16VQFN

Texas Instruments

12,777 -
Datasheet - 16-VFQFN Exposed Pad Tape & Reel (TR) Active Not Verified 8 I2C, SMBus Yes POR Push-Pull 10mA, 25mA 400 kHz 2.3V ~ 5.5V -40°C ~ 85°C - - Surface Mount 16-VQFN (3x3)
PCA9554ARGVR Texas Instruments

PCA9554ARGVR

IC XPNDR 400KHZ I2C SMBUS 16VQFN

Texas Instruments

3,817 -
Datasheet - 16-VQFN Exposed Pad Tape & Reel (TR) Active Not Verified 8 I2C, SMBus Yes POR Push-Pull 10mA, 25mA 400 kHz 2.3V ~ 5.5V -40°C ~ 85°C - - Surface Mount 16-VQFN (4x4)
PCA9557RGVR Texas Instruments

PCA9557RGVR

IC XPNDR 400KHZ I2C SMBUS 16VQFN

Texas Instruments

3,435 -
Datasheet - 16-VQFN Exposed Pad Tape & Reel (TR) Active Not Verified 8 I2C, SMBus No POR Open Drain, Push-Pull 10mA, 25mA 400 kHz 2.3V ~ 5.5V -40°C ~ 85°C - - Surface Mount 16-VQFN (4x4)
TCA9535MRGER Texas Instruments

TCA9535MRGER

IC XPNDR 400KHZ I2C SMBUS 24VQFN

Texas Instruments

1,799 -
Datasheet - 24-VFQFN Exposed Pad Tape & Reel (TR) Active Not Verified 16 I2C, SMBus Yes POR Push-Pull 10mA, 25mA 400 kHz 1.65V ~ 5.5V -40°C ~ 85°C - - Surface Mount 24-VQFN (4x4)
PCA9557DR Texas Instruments

PCA9557DR

IC XPNDR 400KHZ I2C SMBUS 16SOIC

Texas Instruments

1,254 -
Datasheet - 16-SOIC (0.154", 3.90mm Width) Tape & Reel (TR) Active Not Verified 8 I2C, SMBus No POR Open Drain, Push-Pull 10mA, 25mA 400 kHz 2.3V ~ 5.5V -40°C ~ 85°C - - Surface Mount 16-SOIC
TCA9535DBR Texas Instruments

TCA9535DBR

IC XPNDR 400KHZ I2C SMBUS 24SSOP

Texas Instruments

4,207 -
Datasheet - 24-SSOP (0.209", 5.30mm Width) Tape & Reel (TR) Active Not Verified 16 I2C, SMBus Yes POR Push-Pull 10mA, 25mA 400 kHz 1.65V ~ 5.5V -40°C ~ 85°C - - Surface Mount 24-SSOP
TCA6408AQPWRQ1 Texas Instruments

TCA6408AQPWRQ1

IC XPND 400KHZ I2C SMBUS 16TSSOP

Texas Instruments

8,645 -
Datasheet - 16-TSSOP (0.173", 4.40mm Width) Tape & Reel (TR) Active Not Verified 8 I2C, SMBus Yes POR Push-Pull 10mA, 25mA 400 kHz 1.65V ~ 3.6V -40°C ~ 125°C Automotive AEC-Q100 Surface Mount 16-TSSOP
MCP23009-E/SO Microchip Technology

MCP23009-E/SO

IC XPNDR 3.4MHZ I2C 18SOIC

Microchip Technology

221 -
Datasheet - 18-SOIC (0.295", 7.50mm Width) Tube Active Not Verified 8 I2C Yes POR Open Drain 25mA 3.4 MHz 1.8V ~ 5.5V -40°C ~ 125°C - - Surface Mount 18-SOIC
PCA9537DPZ NXP USA Inc.

PCA9537DPZ

IC XPND 400KHZ I2C SMBUS 10TSSOP

NXP USA Inc.

1,547 -
Datasheet - 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Tape & Reel (TR) Active Not Verified 4 I2C, SMBus Yes POR Push-Pull 10mA, 24mA 400 kHz 2.3V ~ 5.5V -40°C ~ 85°C - - Surface Mount 10-TSSOP
PCA9670PW,118 NXP USA Inc.

PCA9670PW,118

IC XPNDR 1MHZ I2C 16TSSOP

NXP USA Inc.

3,769 -
Datasheet - 16-TSSOP (0.173", 4.40mm Width) Tape & Reel (TR) Active Not Verified 8 I2C No POR Push-Pull 100µA, 25mA 1 MHz 2.3V ~ 5.5V -40°C ~ 85°C - - Surface Mount 16-TSSOP
TCA6416APWR Texas Instruments

TCA6416APWR

IC XPND 400KHZ I2C SMBUS 24TSSOP

Texas Instruments

3,188 -
Datasheet - 24-TSSOP (0.173", 4.40mm Width) Tape & Reel (TR) Active Not Verified 16 I2C, SMBus Yes POR Push-Pull 10mA, 25mA 400 kHz 1.65V ~ 5.5V -40°C ~ 85°C - - Surface Mount 24-TSSOP
PCA9555PWJ Nexperia USA Inc.

PCA9555PWJ

I2C

Nexperia USA Inc.

1,674 -
Datasheet - 24-TSSOP (0.173", 4.40mm Width) Tape & Reel (TR) Active - 16 I2C, SMBus Yes POR Push-Pull 10mA, 25mA 400 kHz 2.3V ~ 5.5V -40°C ~ 85°C - - Surface Mount 24-TSSOP
TCA9538DBR Texas Instruments

TCA9538DBR

IC XPNDR 400KHZ I2C 16SSOP

Texas Instruments

5,484 -
Datasheet - 16-SSOP (0.209", 5.30mm Width) Tape & Reel (TR) Active Not Verified 8 I2C Yes - Push-Pull - 400 kHz 1.65V ~ 5.5V -40°C ~ 85°C - - Surface Mount 16-SSOP
TCA9538PWR Texas Instruments

TCA9538PWR

IC XPNDR 400KHZ I2C 16TSSOP

Texas Instruments

2,784 -
Datasheet - 16-TSSOP (0.173", 4.40mm Width) Tape & Reel (TR) Active Not Verified 8 I2C Yes - Push-Pull - 400 kHz 1.65V ~ 5.5V -40°C ~ 85°C - - Surface Mount 16-TSSOP
PCA9534DWR Texas Instruments

PCA9534DWR

IC XPNDR 400KHZ I2C SMBUS 16SOIC

Texas Instruments

2,461 -
Datasheet - 16-SOIC (0.295", 7.50mm Width) Tape & Reel (TR) Active Not Verified 8 I2C, SMBus Yes POR Push-Pull 10mA, 25mA 400 kHz 2.3V ~ 5.5V -40°C ~ 85°C - - Surface Mount 16-SOIC
MCP23S08-E/P Microchip Technology

MCP23S08-E/P

IC XPNDR 10MHZ SPI 18DIP

Microchip Technology

14,260 -
Datasheet - 18-DIP (0.300", 7.62mm) Tube Active Not Verified 8 SPI Yes POR Push-Pull 25mA 10 MHz 1.8V ~ 5.5V -40°C ~ 125°C - - Through Hole 18-PDIP
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WINSUN SOURCING SUPPORT

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Global component sourcing support BOM, shortage and EOL support
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I/O Expanders FAQ

Common questions about selecting, comparing and sourcing I/O Expanders components through Winsun (HK) Electronics.

What should I check when selecting I/O Expanders components?

Compare the manufacturer part number, electrical specifications, package, operating conditions and application requirements. The product datasheet should be used to confirm technical suitability.

Can Winsun help source specific I/O Expanders part numbers?

Yes. Send the exact part number, manufacturer and required quantity. Winsun (HK) Electronics can assist with availability checks, quotation support and sourcing options based on your requirement.

Do you support shortage, obsolete or hard-to-find I/O Expanders parts?

Yes. Our sourcing team can review shortage and obsolete-part requirements and help check available supply channels or possible alternatives when appropriate.

How do I request a quote for I/O Expanders components?

Submit an RFQ with the part number, manufacturer, quantity and target delivery requirement. Our sales team will review your request and follow up with current sourcing information.