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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.

For BOM, shortage or hard-to-find requirements, send your part number and quantity to Winsun (HK) Electronics for availability, lead-time and quotation support.

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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
PI4IOE5V9522UEX Diodes Incorporated

PI4IOE5V9522UEX

IC XPNDR 1MHZ I2C 8MSOP

Diodes Incorporated

4,420 -
Datasheet - 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad Tape & Reel (TR) Obsolete Not Verified - I2C Yes - Open Drain - 1 MHz 2.3V ~ 5.5V - - - Surface Mount 8-MSOP-EP
XRA1200IG16TR-F MaxLinear, Inc.

XRA1200IG16TR-F

IC XPND 400KHZ I2C SMBUS 16TSSOP

MaxLinear, Inc.

3,768 -
Datasheet - 16-TSSOP (0.173", 4.40mm Width) Tape & Reel (TR) Last Time Buy Not Verified 8 I2C, SMBus Yes - Open Drain - 400 kHz 1.65V ~ 3.6V -40°C ~ 85°C - - Surface Mount 16-TSSOP
IS31IO7328-QFLS4-TR Lumissil Microsystems

IS31IO7328-QFLS4-TR

IC XPNDR 400KHZ I2C 16QFN

Lumissil Microsystems

4,581 -
Datasheet - 16-WFQFN Exposed Pad Tape & Reel (TR) Active Not Verified 4 I2C Yes POR Open Drain 10mA, 20mA 400 kHz 2.4V ~ 5.5V -40°C ~ 125°C - - Surface Mount 16-QFN (3x3)
XRA1200PIG16TR-F MaxLinear, Inc.

XRA1200PIG16TR-F

IC XPND 400KHZ I2C SMBUS 16TSSOP

MaxLinear, Inc.

2,603 -
Datasheet - 16-TSSOP (0.173", 4.40mm Width) Tape & Reel (TR) Last Time Buy Not Verified 8 I2C, SMBus Yes - Open Drain - 400 kHz 1.65V ~ 3.6V -40°C ~ 85°C - - Surface Mount 16-TSSOP
IS31IO7325-QFLS4-TR Lumissil Microsystems

IS31IO7325-QFLS4-TR

IC XPNDR 400KHZ I2C SERIAL 24QFN

Lumissil Microsystems

2,271 -
Datasheet - 24-WFQFN Exposed Pad Tape & Reel (TR) Active Not Verified 8 I2C, Serial Yes POR Open Drain 10mA, 20mA 400 kHz 2.4V ~ 5.5V -40°C ~ 125°C - - Surface Mount 24-QFN (4x4)
PCA9536DGKRG4 Texas Instruments

PCA9536DGKRG4

IC XPNDR 400KHZ I2C SMBUS 8VSSOP

Texas Instruments

2,548 -
Datasheet - 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Tape & Reel (TR) Discontinued at Digi-Key Not Verified 4 I2C, SMBus No POR Push-Pull 10mA, 25mA 400 kHz 2.3V ~ 5.5V -40°C ~ 85°C - - Surface Mount 8-VSSOP
PCA9536DRG4 Texas Instruments

PCA9536DRG4

IC XPNDR 400KHZ I2C SMBUS 8SOIC

Texas Instruments

4,928 -
Datasheet - 8-SOIC (0.154", 3.90mm Width) Tape & Reel (TR) Discontinued at Digi-Key Not Verified 4 I2C, SMBus No POR Push-Pull 10mA, 25mA 400 kHz 2.3V ~ 5.5V -40°C ~ 85°C - - Surface Mount 8-SOIC
PCF8574ANG4 Texas Instruments

PCF8574ANG4

IC XPNDR 100KHZ I2C 16DIP

Texas Instruments

3,997 -
Datasheet - 16-DIP (0.300", 7.62mm) Tube Discontinued at Digi-Key Not Verified 8 I2C Yes POR Push-Pull 1mA, 25mA 100 kHz 2.5V ~ 6V -40°C ~ 85°C - - Through Hole 16-PDIP
XRA1201IL24TR-F MaxLinear, Inc.

XRA1201IL24TR-F

IC XPNDR 400KHZ I2C SMBUS 24QFN

MaxLinear, Inc.

4,201 -
Datasheet - 24-VFQFN Exposed Pad Tape & Reel (TR) Active Not Verified 16 I2C, SMBus Yes - Open Drain - 400 kHz 1.65V ~ 3.6V -40°C ~ 85°C - - Surface Mount 24-QFN (4x4)
IS31IO7325-GRLS4 Lumissil Microsystems

IS31IO7325-GRLS4

IC XPNDR 400KHZ I2C SERIAL 24SOP

Lumissil Microsystems

4,013 -
Datasheet - 24-SOIC (0.295", 7.50mm Width) Tube Active Not Verified 8 I2C, Serial Yes POR Open Drain 20mA 400 kHz 2.4V ~ 5.5V -40°C ~ 125°C - - Surface Mount 24-SOP
PCA9554CBSHP NXP USA Inc.

PCA9554CBSHP

IC XPND 400KHZ I2C SMBUS 16HVQFN

NXP USA Inc.

2,464 -
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)
XRA1203IG24TR-F MaxLinear, Inc.

XRA1203IG24TR-F

IC XPND 400KHZ I2C SMBUS 24TSSOP

MaxLinear, Inc.

3,282 -
Datasheet - 24-TSSOP (0.173", 4.40mm Width) Tape & Reel (TR) Active Not Verified 16 I2C, SMBus Yes - Open Drain - 400 kHz 1.65V ~ 3.6V -40°C ~ 85°C - - Surface Mount 24-TSSOP
PCAL6408AEXX NXP USA Inc.

PCAL6408AEXX

IC XPND 400KHZ I2C SMBUS 16XFBGA

NXP USA Inc.

4,018 -
Datasheet Agile 16-XFBGA Tape & Reel (TR) Obsolete Not Verified 8 I2C, SMBus Yes POR Open Drain, Push-Pull 10mA, 25mA 400 kHz 1.65V ~ 5.5V -40°C ~ 85°C - - Surface Mount 16-XFBGA (1.6x1.6)
PI4IOE5V9673ZDEX Diodes Incorporated

PI4IOE5V9673ZDEX

IC XPNDR 400KHZ I2C 24TQFN

Diodes Incorporated

1,244 -
Datasheet - 24-VFQFN Exposed Pad Tape & Reel (TR) Active Not Verified 16 I2C Yes - - - 400 kHz 2.3V ~ 5.5V -40°C ~ 85°C - - Surface Mount 24-TQFN (4x4)
PCA9534PWRG4 Texas Instruments

PCA9534PWRG4

IC XPND 400KHZ I2C SMBUS 16TSSOP

Texas Instruments

1,169 -
Datasheet - 16-TSSOP (0.173", 4.40mm Width) Tape & Reel (TR) Discontinued at Digi-Key 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
PCA9554N,112 NXP USA Inc.

PCA9554N,112

IC XPNDR 400KHZ I2C SMBUS 16DIP

NXP USA Inc.

1,111 -
Datasheet - 16-DIP (0.300", 7.62mm) Tube Obsolete Not Verified 8 I2C, SMBus Yes POR Push-Pull 10mA, 25mA 400 kHz 2.3V ~ 5.5V -40°C ~ 85°C - - Through Hole 16-DIP
PCA9554AN,112 NXP USA Inc.

PCA9554AN,112

IC XPNDR 400KHZ I2C SMBUS 16DIP

NXP USA Inc.

1,050 -
Datasheet - 16-DIP (0.300", 7.62mm) Tube Obsolete Not Verified 8 I2C, SMBus Yes POR Push-Pull 10mA, 25mA 400 kHz 2.3V ~ 5.5V -40°C ~ 85°C - - Through Hole 16-DIP
XRA1201IG24TR-F MaxLinear, Inc.

XRA1201IG24TR-F

IC XPND 400KHZ I2C SMBUS 24TSSOP

MaxLinear, Inc.

4,916 -
Datasheet - 24-TSSOP (0.173", 4.40mm Width) Tape & Reel (TR) Active Not Verified 16 I2C, SMBus Yes - - - 400 kHz 1.65V ~ 3.6V -40°C ~ 85°C - - Surface Mount 24-TSSOP
PCA9674ATS,112 NXP USA Inc.

PCA9674ATS,112

IC XPNDR 1MHZ I2C 20SSOP

NXP USA Inc.

4,429 -
Datasheet - 20-LSSOP (0.173", 4.40mm Width) Tube Obsolete Not Verified 8 I2C Yes POR Push-Pull 100µA, 25mA 1 MHz 2.3V ~ 5.5V -40°C ~ 85°C - - Surface Mount 20-SSOP
PCA9674TS,112 NXP USA Inc.

PCA9674TS,112

IC XPNDR 1MHZ I2C 20SSOP

NXP USA Inc.

2,401 -
Datasheet - 20-LSSOP (0.173", 4.40mm Width) Tube Obsolete Not Verified 8 I2C Yes POR Push-Pull 100µA, 25mA 1 MHz 2.3V ~ 5.5V -40°C ~ 85°C - - Surface Mount 20-SSOP
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WINSUN SOURCING SUPPORT

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FREQUENTLY ASKED QUESTIONS

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.