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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
PCF8575CDW Texas Instruments

PCF8575CDW

IC XPNDR 400KHZ I2C SMBUS 24SOIC

Texas Instruments

2,186 -
Datasheet - 24-SOIC (0.295", 7.50mm Width) Tube Active Not Verified 16 I2C, SMBus Yes POR Open Drain 10mA, 25mA 400 kHz 4.5V ~ 5.5V -40°C ~ 85°C - - Surface Mount 24-SOIC
PCA9671DK,118 NXP USA Inc.

PCA9671DK,118

IC XPNDR 1MHZ I2C 24SSOP

NXP USA Inc.

2,157 -
Datasheet - 24-SSOP (0.154", 3.90mm Width) Tape & Reel (TR) Obsolete Not Verified 16 I2C No POR Push-Pull 100µA, 25mA 1 MHz 2.3V ~ 5.5V -40°C ~ 85°C - - Surface Mount 24-SSOP
PCA9673DK,118 NXP USA Inc.

PCA9673DK,118

IC XPNDR 1MHZ I2C 24SSOP

NXP USA Inc.

3,227 -
Datasheet - 24-SSOP (0.154", 3.90mm Width) Tape & Reel (TR) Obsolete Not Verified 16 I2C Yes POR Push-Pull 100µA, 25mA 1 MHz 2.3V ~ 5.5V -40°C ~ 85°C - - Surface Mount 24-SSOP
PCA9675DK,118 NXP USA Inc.

PCA9675DK,118

IC XPNDR 1MHZ I2C 24SSOP

NXP USA Inc.

4,665 -
Datasheet - 24-SSOP (0.154", 3.90mm Width) Tape & Reel (TR) Obsolete Not Verified 16 I2C Yes POR Push-Pull 100µA, 25mA 1 MHz 2.3V ~ 5.5V -40°C ~ 85°C - - Surface Mount 24-SSOP
PCA9671D,118 NXP USA Inc.

PCA9671D,118

IC XPNDR 1MHZ I2C 24SO

NXP USA Inc.

4,644 -
Datasheet - 24-SOIC (0.295", 7.50mm Width) Tape & Reel (TR) Obsolete Not Verified 16 I2C No POR Push-Pull 100µA, 25mA 1 MHz 2.3V ~ 5.5V -40°C ~ 85°C - - Surface Mount 24-SO
PCA9675BS,118 NXP USA Inc.

PCA9675BS,118

IC XPNDR 1MHZ I2C 24HVQFN

NXP USA Inc.

4,227 -
Datasheet - 24-VFQFN Exposed Pad Tape & Reel (TR) Obsolete Not Verified 16 I2C Yes POR Push-Pull 100µA, 25mA 1 MHz 2.3V ~ 5.5V -40°C ~ 85°C - - Surface Mount 24-HVQFN (4x4)
PCA9575PW1,118 NXP USA Inc.

PCA9575PW1,118

IC XPND 400KHZ I2C SMBUS 24TSSOP

NXP USA Inc.

2,203 -
Datasheet - 24-TSSOP (0.173", 4.40mm Width) Tape & Reel (TR) Active Not Verified 16 I2C, SMBus Yes POR Push-Pull 1mA, 3mA 400 kHz 1.1V ~ 3.6V -40°C ~ 85°C - - Surface Mount 24-TSSOP
LM8335TLX/NOPB Texas Instruments

LM8335TLX/NOPB

IC XPNDR 26MHZ MIPI RFFE 16DSBGA

Texas Instruments

1,334 -
Datasheet - 16-WFBGA, DSBGA Tape & Reel (TR) Active Not Verified 8 MIPI® RFFE No POR Open Drain - 26 MHz 1.8V ~ 3.3V -30°C ~ 85°C - - Surface Mount 16-DSBGA (2.5x2.12)
PCA9534DBR Texas Instruments

PCA9534DBR

IC XPNDR 400KHZ I2C SMBUS 16SSOP

Texas Instruments

3,062 -
Datasheet - 16-SSOP (0.209", 5.30mm Width) Tape & Reel (TR) Obsolete Not Verified 8 I2C, SMBus Yes POR Push-Pull 10mA, 25mA 400 kHz 2.3V ~ 5.5V -40°C ~ 85°C - - Surface Mount 16-SSOP
PCA9534DGVR Texas Instruments

PCA9534DGVR

IC XPND 400KHZ I2C SMBUS 16TVSOP

Texas Instruments

2,307 -
Datasheet - 16-TFSOP (0.173", 4.40mm Width) Tape & Reel (TR) Obsolete Not Verified 8 I2C, SMBus Yes POR Push-Pull 10mA, 25mA 400 kHz 2.3V ~ 5.5V -40°C ~ 85°C - - Surface Mount 16-TVSOP
PCA9535EDWR2G onsemi

PCA9535EDWR2G

IC XPNDR 100KHZ I2C SMBUS 24SOIC

onsemi

1,351 -
Datasheet - 24-SOIC (0.295", 7.50mm Width) Tape & Reel (TR) Obsolete Not Verified 16 I2C, SMBus Yes POR Push-Pull 10mA, 25mA 100 kHz 1.65V ~ 5.5V -55°C ~ 125°C - - Surface Mount 24-SOIC
PCA9535RTWR Texas Instruments

PCA9535RTWR

IC XPNDR 400KHZ I2C SMBUS 24WQFN

Texas Instruments

2,834 -
Datasheet - 24-WFQFN 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-WQFN (4x4)
PCA9505DGG,118 NXP USA Inc.

PCA9505DGG,118

IC XPNDR 400KHZ I2C 56TSSOP

NXP USA Inc.

1,118 -
Datasheet - 56-TFSOP (0.240", 6.10mm Width) Tape & Reel (TR) Obsolete Not Verified 40 I2C Yes POR Push-Pull 10mA, 25mA 400 kHz 2.3V ~ 5.5V -40°C ~ 85°C - - Surface Mount 56-TSSOP
BU1850MUV-E2 Rohm Semiconductor

BU1850MUV-E2

IC XPNDR 400KHZ I2C 35VB

Rohm Semiconductor

4,089 -
Datasheet - 16-VFQFN Exposed Pad Tape & Reel (TR) Not For New Designs Not Verified 8 I2C Yes POR Open Drain - 400 kHz 1.65V ~ 3.6V -30°C ~ 85°C - - Surface Mount VQFN016V3030
CAT9554WI-GT2 onsemi

CAT9554WI-GT2

IC XPNDR 400KHZ I2C SMBUS 16SOIC

onsemi

4,091 -
Datasheet - 16-SOIC (0.154", 3.90mm Width) Tape & Reel (TR) Obsolete Not Verified 8 I2C, SMBus Yes POR Push-Pull 10mA, 24mA 400 kHz 2.3V ~ 5.5V -40°C ~ 85°C - - Surface Mount 16-SOIC
PCA9539BS,118 NXP USA Inc.

PCA9539BS,118

IC XPND 400KHZ I2C SMBUS 24HVQFN

NXP USA Inc.

3,190 -
Datasheet - 24-VFQFN Exposed Pad Tape & Reel (TR) Obsolete Not Verified 16 I2C, SMBus Yes POR Push-Pull 10mA, 25mA 400 kHz 2.3V ~ 5.5V -40°C ~ 85°C - - Surface Mount 24-HVQFN (4x4)
S-7760A4115-HCT1 ABLIC Inc.

S-7760A4115-HCT1

IC XPNDR 400KHZ I2C 16WLP

ABLIC Inc.

2,678 -
Datasheet - 16-UFBGA, WLBGA Tape & Reel (TR) Obsolete Not Verified 8 I2C No EEPROM Open Drain - 400 kHz 2.3V ~ 4.5V -40°C ~ 85°C - - Surface Mount WLP-16A-C
CAT9555WI-T1 onsemi

CAT9555WI-T1

IC XPNDR 400KHZ I2C SMBUS 24SOIC

onsemi

2,819 -
Datasheet - 24-SOIC (0.295", 7.50mm Width) Tape & Reel (TR) Obsolete Not Verified 16 I2C, SMBus Yes POR Push-Pull 10mA, 24mA 400 kHz 2.3V ~ 5.5V -40°C ~ 85°C - - Surface Mount 24-SOIC
PCAL9539AHF,128 NXP USA Inc.

PCAL9539AHF,128

IC XPNDR 400KHZ I2C 24HWQFN

NXP USA Inc.

1,064 -
Datasheet Agile 24-WFQFN Exposed Pad Tape & Reel (TR) Active Not Verified 16 I2C Yes POR Open Drain, Push-Pull 10mA, 25mA 400 kHz 1.65V ~ 5.5V -40°C ~ 85°C - - Surface Mount 24-HWQFN (4x4)
MIC74YQS Microchip Technology

MIC74YQS

IC XPNDR 100KHZ I2C SMBUS 16QSOP

Microchip Technology

3,862 -
Datasheet - 16-SSOP (0.154", 3.90mm Width) Tube Obsolete Not Verified 8 I2C, SMBus Yes Fan Speed Controller Open Drain, Push-Pull 7mA, 10mA 100 kHz 2.7V ~ 3.6V -40°C ~ 85°C - - Surface Mount 16-QSOP
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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.