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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
PCA9536DP,118 NXP USA Inc.

PCA9536DP,118

IC XPNDR 400KHZ I2C SMBUS 8TSSOP

NXP USA Inc.

26,246 -
Datasheet - 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Tape & Reel (TR) Active Not Verified 4 I2C, SMBus No POR Push-Pull 10mA, 25mA 400 kHz 2.3V ~ 5.5V -40°C ~ 85°C - - Surface Mount 8-TSSOP
TCA9534APWR Texas Instruments

TCA9534APWR

IC XPNDR 400KHZ I2C 16TSSOP

Texas Instruments

4,168 -
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
PCA9536TK,118 NXP USA Inc.

PCA9536TK,118

IC XPNDR 400KHZ I2C SMBUS 8HVSON

NXP USA Inc.

125,778 -
Datasheet - 8-VFDFN Exposed Pad Tape & Reel (TR) Active Not Verified 4 I2C, SMBus No POR Push-Pull 10mA, 25mA 400 kHz 2.3V ~ 5.5V -40°C ~ 85°C - - Surface Mount 8-HVSON (3x3)
MCP23008T-E/SO Microchip Technology

MCP23008T-E/SO

IC XPNDR 1.7MHZ I2C 18SOIC

Microchip Technology

8,729 -
Datasheet - 18-SOIC (0.295", 7.50mm Width) Tape & Reel (TR) Active Not Verified 8 I2C Yes POR Push-Pull 25mA 1.7 MHz 1.8V ~ 5.5V -40°C ~ 125°C - - Surface Mount 18-SOIC
MCP23008-E/SO Microchip Technology

MCP23008-E/SO

IC XPNDR 1.7MHZ I2C 18SOIC

Microchip Technology

1,559 -
Datasheet - 18-SOIC (0.295", 7.50mm Width) Tube Active Not Verified 8 I2C Yes POR Push-Pull 25mA 1.7 MHz 1.8V ~ 5.5V -40°C ~ 125°C - - Surface Mount 18-SOIC
PCAL6416AHF,128 NXP USA Inc.

PCAL6416AHF,128

IC XPND 400KHZ I2C SMBUS 24HWQFN

NXP USA Inc.

129,361 -
Datasheet Agile 24-WFQFN Exposed Pad 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-HWQFN (4x4)
PCAL6416APW,118 NXP USA Inc.

PCAL6416APW,118

IC XPND 400KHZ I2C SMBUS 24TSSOP

NXP USA Inc.

36,116 -
Datasheet Agile 24-TSSOP (0.173", 4.40mm Width) 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-TSSOP
PCAL6416AEX1Z NXP USA Inc.

PCAL6416AEX1Z

IC XPND 400KHZ I2C SMBUS 24X2QFN

NXP USA Inc.

5,931 -
Datasheet Agile 24-XFLGA 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-X2QFN (2x2)
TCA9535RGER Texas Instruments

TCA9535RGER

IC XPNDR 400KHZ I2C SMBUS 24VQFN

Texas Instruments

3,412 -
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)
PCA9557PWR Texas Instruments

PCA9557PWR

IC XPND 400KHZ I2C SMBUS 16TSSOP

Texas Instruments

1,037 -
Datasheet - 16-TSSOP (0.173", 4.40mm 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-TSSOP
PI4IOE5V6408ZTAEX Diodes Incorporated

PI4IOE5V6408ZTAEX

IC XPNDR 1MHZ I2C 16UQFN

Diodes Incorporated

8,050 -
Datasheet - 16-UFQFN Tape & Reel (TR) Active Not Verified 8 I2C Yes - Push-Pull - 1 MHz 1.65V ~ 3.6V -40°C ~ 85°C - - Surface Mount 16-UQFN (1.8x2.6)
MCP23008T-E/SS Microchip Technology

MCP23008T-E/SS

IC XPNDR 1.7MHZ I2C 20SSOP

Microchip Technology

15,006 -
Datasheet - 20-SSOP (0.209", 5.30mm Width) Tape & Reel (TR) Active Not Verified 8 I2C Yes POR Push-Pull 25mA 1.7 MHz 1.8V ~ 5.5V -40°C ~ 125°C - - Surface Mount 20-SSOP
MCP23S17-E/SS Microchip Technology

MCP23S17-E/SS

IC XPNDR 10MHZ SPI 28SSOP

Microchip Technology

11,800 -
Datasheet - 28-SSOP (0.209", 5.30mm Width) Tube Active Not Verified 16 SPI Yes POR Push-Pull 25mA 10 MHz 1.8V ~ 5.5V -40°C ~ 125°C - - Surface Mount 28-SSOP
MCP23008T-E/ML Microchip Technology

MCP23008T-E/ML

IC XPNDR 1.7MHZ I2C 20QFN

Microchip Technology

7,805 -
Datasheet - 20-VFQFN Exposed Pad Tape & Reel (TR) Active Not Verified 8 I2C Yes POR Push-Pull 25mA 1.7 MHz 1.8V ~ 5.5V -40°C ~ 125°C - - Surface Mount 20-QFN (4x4)
MCP23008-E/ML Microchip Technology

MCP23008-E/ML

IC XPNDR 1.7MHZ I2C 20QFN

Microchip Technology

6,544 -
Datasheet - 20-VFQFN Exposed Pad Tube Active Not Verified 8 I2C Yes POR Push-Pull 25mA 1.7 MHz 1.8V ~ 5.5V -40°C ~ 125°C - - Surface Mount 20-QFN (4x4)
MCP23008-E/SS Microchip Technology

MCP23008-E/SS

IC XPNDR 1.7MHZ I2C 20SSOP

Microchip Technology

2,117 -
Datasheet - 20-SSOP (0.209", 5.30mm Width) Tube Active Not Verified 8 I2C Yes POR Push-Pull 25mA 1.7 MHz 1.8V ~ 5.5V -40°C ~ 125°C - - Surface Mount 20-SSOP
PCA9534PWR Texas Instruments

PCA9534PWR

IC XPND 400KHZ I2C SMBUS 16TSSOP

Texas Instruments

7,973 -
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 2.3V ~ 5.5V -40°C ~ 85°C - - Surface Mount 16-TSSOP
PCF8574RGTR Texas Instruments

PCF8574RGTR

IC XPNDR 100KHZ I2C 16VQFN

Texas Instruments

5,077 -
Datasheet - 16-VFQFN Exposed Pad Tape & Reel (TR) Active Not Verified 8 I2C Yes POR Push-Pull 1mA, 25mA 100 kHz 2.5V ~ 6V -40°C ~ 85°C - - Surface Mount 16-VQFN (3x3)
PCA9535RGER Texas Instruments

PCA9535RGER

IC XPNDR 400KHZ I2C SMBUS 24VQFN

Texas Instruments

5,955 -
Datasheet - 24-VFQFN Exposed Pad Tape & Reel (TR) Active Not Verified 16 I2C, SMBus Yes POR Push-Pull 10mA, 25mA 400 kHz 2.3V ~ 5.5V -40°C ~ 85°C - - Surface Mount 24-VQFN (4x4)
PCF8574AT/3,518 NXP USA Inc.

PCF8574AT/3,518

IC XPNDR 100KHZ I2C 16SO

NXP USA Inc.

20,949 -
Datasheet - 16-SOIC (0.295", 7.50mm Width) Tape & Reel (TR) Active Not Verified 8 I2C Yes POR Push-Pull 300µA, 25mA 100 kHz 2.5V ~ 6V -40°C ~ 85°C - - Surface Mount 16-SO
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WINSUN SOURCING 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.