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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
PCA9672D,512 NXP USA Inc.

PCA9672D,512

IC XPNDR 1MHZ I2C 16SO

NXP USA Inc.

3,071 -
Datasheet - 16-SOIC (0.295", 7.50mm 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 16-SO
PCA9673BS,118 NXP USA Inc.

PCA9673BS,118

IC XPNDR 1MHZ I2C 24HVQFN

NXP USA Inc.

1,141 -
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)
PCA9701D,112 NXP USA Inc.

PCA9701D,112

IC XPNDR 5MHZ SPI SERIAL 24SO

NXP USA Inc.

3,493 -
Datasheet - 24-SOIC (0.295", 7.50mm Width) Tube Obsolete Not Verified 16 (Input Only) SPI Serial Yes - Push-Pull - 5 MHz 2.5V ~ 5.5V -40°C ~ 125°C - - Surface Mount 24-SO
PCA9701D,118 NXP USA Inc.

PCA9701D,118

IC XPNDR 5MHZ SPI SERIAL 24SO

NXP USA Inc.

1,044 -
Datasheet - 24-SOIC (0.295", 7.50mm Width) Tape & Reel (TR) Obsolete Not Verified 16 (Input Only) SPI Serial Yes - Push-Pull - 5 MHz 2.5V ~ 5.5V -40°C ~ 125°C - - Surface Mount 24-SO
PCA9701PW,112 NXP USA Inc.

PCA9701PW,112

IC XPNDR 5MHZ SPI SERIAL 24TSSOP

NXP USA Inc.

1,741 -
Datasheet - 24-TSSOP (0.173", 4.40mm Width) Tube Obsolete Not Verified 16 (Input Only) SPI Serial Yes - Push-Pull - 5 MHz 2.5V ~ 5.5V -40°C ~ 125°C - - Surface Mount 24-TSSOP
MAX7316AEE+ Analog Devices Inc./Maxim Integrated

MAX7316AEE+

IC XPNDR 400KHZ I2C SMBUS 16QSOP

Analog Devices Inc./Maxim Integrated

4,572 -
Datasheet - 16-SSOP (0.154", 3.90mm Width) Tube Obsolete Not Verified 10 I2C, SMBus Yes PWM Open Drain 50mA 400 kHz 2V ~ 3.6V -40°C ~ 125°C - - Surface Mount 16-QSOP
MAX7316AEE+T Analog Devices Inc./Maxim Integrated

MAX7316AEE+T

IC XPNDR 400KHZ I2C SMBUS 16QSOP

Analog Devices Inc./Maxim Integrated

4,636 -
Datasheet - 16-SSOP (0.154", 3.90mm Width) Tape & Reel (TR) Obsolete Not Verified 10 I2C, SMBus Yes PWM Open Drain 50mA 400 kHz 2V ~ 3.6V -40°C ~ 125°C - - Surface Mount 16-QSOP
DS4550E+T&R Analog Devices Inc./Maxim Integrated

DS4550E+T&R

IC XPNDR 400KHZ I2C JTAG 20TSSOP

Analog Devices Inc./Maxim Integrated

4,467 -
Datasheet - 20-TSSOP (0.173", 4.40mm Width) Tape & Reel (TR) Active Not Verified 9 I2C, JTAG No EEPROM, POR Open Drain 16mA 400 kHz 2.7V ~ 5.5V -40°C ~ 85°C - - Surface Mount 20-TSSOP
PCA9535CD,112 NXP USA Inc.

PCA9535CD,112

IC XPNDR 400KHZ I2C SMBUS 24SO

NXP USA Inc.

3,429 -
Datasheet - 24-SOIC (0.295", 7.50mm Width) Tube 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-SO
PCA9535CPW,112 NXP USA Inc.

PCA9535CPW,112

IC XPND 400KHZ I2C SMBUS 24TSSOP

NXP USA Inc.

2,743 -
Datasheet - 24-TSSOP (0.173", 4.40mm Width) Tube Obsolete Not Verified 16 I2C, SMBus Yes POR Open Drain 10mA, 25mA 400 kHz 2.3V ~ 5.5V -40°C ~ 85°C - - Surface Mount 24-TSSOP
MAX7300ANI+ Analog Devices Inc./Maxim Integrated

MAX7300ANI+

IC XPNDR 400KHZ I2C 2-WIRE 28DIP

Analog Devices Inc./Maxim Integrated

2,427 -
Datasheet - 28-DIP (0.300", 7.62mm) Tube Obsolete Not Verified 20 I2C, 2-Wire Serial Yes - Push-Pull 4.5mA, 10mA 400 kHz 2.5V ~ 5.5V -40°C ~ 125°C - - Through Hole 28-PDIP
MAX7326AEG+T Analog Devices Inc./Maxim Integrated

MAX7326AEG+T

IC XPNDR 400KHZ I2C 24QSOP

Analog Devices Inc./Maxim Integrated

2,906 -
Datasheet - 24-SSOP (0.154", 3.90mm Width) Tape & Reel (TR) Active Not Verified 16 I2C Yes POR Push-Pull 20mA 400 kHz 1.71V ~ 5.5V -40°C ~ 125°C - - Surface Mount 24-QSOP
PCA9539PWG4 Texas Instruments

PCA9539PWG4

IC XPND 400KHZ I2C SMBUS 24TSSOP

Texas Instruments

2,252 -
Datasheet - 24-TSSOP (0.173", 4.40mm Width) Tube 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-TSSOP
PCF8574DWRG4 Texas Instruments

PCF8574DWRG4

IC XPNDR 100KHZ I2C 16SOIC

Texas Instruments

1,541 -
Datasheet - 16-SOIC (0.295", 7.50mm Width) Tape & Reel (TR) Obsolete Not Verified 8 I2C Yes POR Push-Pull 1mA, 25mA 100 kHz 2.5V ~ 6V -40°C ~ 85°C - - Surface Mount 16-SOIC
TCA6408PW Texas Instruments

TCA6408PW

IC XPND 400KHZ I2C SMBUS 16TSSOP

Texas Instruments

3,948 -
Datasheet - 16-TSSOP (0.173", 4.40mm Width) Tube Obsolete Not Verified 8 I2C, SMBus Yes POR Push-Pull 10mA, 25mA 400 kHz 1.65V ~ 5.5V -40°C ~ 85°C - - Surface Mount 16-TSSOP
TCA6408PWG4 Texas Instruments

TCA6408PWG4

IC XPND 400KHZ I2C SMBUS 16TSSOP

Texas Instruments

2,118 -
Datasheet - 16-TSSOP (0.173", 4.40mm Width) Tube Obsolete Not Verified 8 I2C, SMBus Yes POR Push-Pull 10mA, 25mA 400 kHz 1.65V ~ 5.5V -40°C ~ 85°C - - Surface Mount 16-TSSOP
TCA6408PWRG4 Texas Instruments

TCA6408PWRG4

IC XPND 400KHZ I2C SMBUS 16TSSOP

Texas Instruments

1,745 -
Datasheet - 16-TSSOP (0.173", 4.40mm Width) Tape & Reel (TR) Obsolete Not Verified 8 I2C, SMBus Yes POR Push-Pull 10mA, 25mA 400 kHz 1.65V ~ 5.5V -40°C ~ 85°C - - Surface Mount 16-TSSOP
IS82C55A-5Z96 Renesas Electronics Corporation

IS82C55A-5Z96

IC XPNDR PARALLEL 44PLCC

Renesas Electronics Corporation

1,374 -
Datasheet - 44-LCC (J-Lead) Tape & Reel (TR) Obsolete Not Verified 24 Parallel No - Open Drain 2.5mA - 4.5V ~ 5.5V -40°C ~ 85°C - - Surface Mount 44-PLCC (16.58x16.58)
IS82C55A-5Z Renesas Electronics Corporation

IS82C55A-5Z

IC XPNDR PARALLEL 44PLCC

Renesas Electronics Corporation

4,635 -
Datasheet - 44-LCC (J-Lead) Tube Obsolete Not Verified 24 Parallel No - Open Drain 2.5mA - 4.5V ~ 5.5V -40°C ~ 85°C - - Surface Mount 44-PLCC (16.58x16.58)
PCA9674PW/S911,118 NXP USA Inc.

PCA9674PW/S911,118

IC XPNDR 1MHZ I2C 16TSSOP

NXP USA Inc.

2,053 -
Datasheet - 16-TSSOP (0.173", 4.40mm Width) Tape & Reel (TR) Active Not Verified 8 I2C Yes POR Push-Pull 100µA, 25mA 1 MHz 2.3V ~ 5.5V -40°C ~ 85°C - - Surface Mount 16-TSSOP
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I/O Expanders FAQ

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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.