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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
PCA9500BS,118 NXP USA Inc.

PCA9500BS,118

IC XPND 400KHZ I2C SMBUS 16HVQFN

NXP USA Inc.

32,894 -
Datasheet - 16-VQFN Exposed Pad Tape & Reel (TR) Active Not Verified 8 I2C, SMBus No EEPROM, POR Push-Pull 100µA, 25mA 400 kHz 2.5V ~ 3.6V -40°C ~ 85°C - - Surface Mount 16-HVQFN (4x4)
PCA9500PW,118 NXP USA Inc.

PCA9500PW,118

IC XPND 400KHZ I2C SMBUS 16TSSOP

NXP USA Inc.

20,306 -
Datasheet - 16-TSSOP (0.173", 4.40mm Width) Tape & Reel (TR) Active Not Verified 8 I2C, SMBus No EEPROM, POR Push-Pull 100µA, 25mA 400 kHz 2.5V ~ 3.6V -40°C ~ 85°C - - Surface Mount 16-TSSOP
PCAL9535AHF,128 NXP USA Inc.

PCAL9535AHF,128

IC XPNDR 400KHZ I2C 24HWQFN

NXP USA Inc.

10,042 -
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)
PCAL9539APW,118 NXP USA Inc.

PCAL9539APW,118

IC XPND 400KHZ I2C SMBUS 24TSSOP

NXP USA Inc.

572 -
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
PCF8575TS/1,118 NXP USA Inc.

PCF8575TS/1,118

IC XPNDR 400KHZ I2C 24SSOP

NXP USA Inc.

5,551 -
Datasheet - 24-SSOP (0.209", 5.30mm Width) Tape & Reel (TR) Active Not Verified 16 I2C Yes POR Push-Pull 10mA, 25mA 400 kHz 2.5V ~ 5.5V -40°C ~ 85°C - - Surface Mount 24-SSOP
PCF8575TS/1,112 NXP USA Inc.

PCF8575TS/1,112

IC XPNDR 400KHZ I2C 24SSOP

NXP USA Inc.

4,309 -
Datasheet - 24-SSOP (0.209", 5.30mm Width) Tube Active Not Verified 16 I2C Yes POR Push-Pull 10mA, 25mA 400 kHz 2.5V ~ 5.5V -40°C ~ 85°C - - Surface Mount 24-SSOP
PCA9555DB,118 NXP USA Inc.

PCA9555DB,118

IC XPNDR 400KHZ I2C SMBUS 24SSOP

NXP USA Inc.

888 -
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 2.3V ~ 5.5V -40°C ~ 85°C - - Surface Mount 24-SSOP
PCF8575DWR Texas Instruments

PCF8575DWR

IC XPNDR 400KHZ I2C SMBUS 24SOIC

Texas Instruments

3,012 -
Datasheet - 24-SOIC (0.295", 7.50mm Width) Tape & Reel (TR) Active Not Verified 16 I2C, SMBus Yes POR Push-Pull 1mA, 25mA 400 kHz 2.5V ~ 5.5V -40°C ~ 85°C - - Surface Mount 24-SOIC
PCA9539PWR Texas Instruments

PCA9539PWR

IC XPND 400KHZ I2C SMBUS 24TSSOP

Texas Instruments

3,575 -
Datasheet - 24-TSSOP (0.173", 4.40mm Width) Tape & Reel (TR) Not For New Designs 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
PCAL6534EVJ NXP USA Inc.

PCAL6534EVJ

IC XPNDR 1MHZ I2C 42VFBGA

NXP USA Inc.

3,941 -
Datasheet Agile 42-VFBGA Tape & Reel (TR) Active Not Verified 34 I2C Yes POR Open Drain, Push-Pull - 1 MHz 1.65V ~ 5.5V -40°C ~ 85°C - - Surface Mount 42-VFBGA (2.6x3)
PCF8575DBR Texas Instruments

PCF8575DBR

IC XPNDR 400KHZ I2C SMBUS 24SSOP

Texas Instruments

2,874 -
Datasheet - 24-SSOP (0.209", 5.30mm Width) Tape & Reel (TR) Active Not Verified 16 I2C, SMBus Yes POR Push-Pull 1mA, 25mA 400 kHz 2.5V ~ 5.5V -40°C ~ 85°C - - Surface Mount 24-SSOP
PI4IOE5V6416RQ2LEX Diodes Incorporated

PI4IOE5V6416RQ2LEX

IC XPNDR 400KHZ I2C 24TSSOP

Diodes Incorporated

31,075 -
Datasheet - 24-TSSOP (0.173", 4.40mm Width) Tape & Reel (TR) Active Not Verified 16 I2C Yes POR Open Drain, Push-Pull - 400 kHz 1.65V ~ 5.5V -40°C ~ 105°C Automotive AEC-Q100 Surface Mount 24-TSSOP
SX1509BIULTRT Semtech Corporation

SX1509BIULTRT

IC XPNDR 400KHZ I2C 28QFN

Semtech Corporation

62,070 -
Datasheet - 28-UFQFN Exposed Pad Tape & Reel (TR) Active Not Verified 16 I2C Yes Keypad Controller, LED Output, POR Open Drain, Push-Pull 8mA, 15mA 400 kHz 1.425V ~ 3.6V -40°C ~ 85°C - - Surface Mount 28-QFN-UT (4x4)
PI4IOE5V96248ZLEX Diodes Incorporated

PI4IOE5V96248ZLEX

IC XPNDR 1MHZ I2C 56TQFN

Diodes Incorporated

1,197 -
Datasheet - 56-WFQFN Exposed Pad Tape & Reel (TR) Active Not Verified 48 I2C Yes - Push-Pull 42mA, 480µA 1 MHz 2.3V ~ 5.5V -40°C ~ 85°C - - Surface Mount 56-TQFN (7x7)
PI4IOE5V6534Q2ZLWEX Diodes Incorporated

PI4IOE5V6534Q2ZLWEX

IC XPNDR 100KHZ I2C 46QFN

Diodes Incorporated

4,539 -
Datasheet - 46-WFQFN Exposed Pad Tape & Reel (TR) Active Not Verified 34 I2C Yes - - 10mA, 10mA 100 kHz 1.65V ~ 5.5V -40°C ~ 105°C Automotive AEC-Q100 Surface Mount, Wettable Flank W-QFN4565-46 (SWP)
DS4520E+TRL Analog Devices Inc./Maxim Integrated

DS4520E+TRL

IC XPNDR 400KHZ I2C 16TSSOP

Analog Devices Inc./Maxim Integrated

21,890 -
Datasheet - 16-TSSOP (0.173", 4.40mm Width) Tape & Reel (TR) Active Not Verified 9 I2C No EEPROM, POR Open Drain 12mA 400 kHz 2.7V ~ 5.5V -40°C ~ 85°C - - Surface Mount 16-TSSOP
ADP5587ACBZ-R7 Analog Devices Inc.

ADP5587ACBZ-R7

IC XPNDR 400KHZ I2C 25WLCSP

Analog Devices Inc.

1,018 -
Datasheet - 25-UFBGA, WLCSP Tape & Reel (TR) Active Not Verified 18 I2C Yes Keypad Controller, POR Open Drain - 400 kHz 1.65V ~ 3.6V -40°C ~ 85°C - - Surface Mount 25-WLCSP (1.97x1.97)
SX1509QBIULTRT Semtech Corporation

SX1509QBIULTRT

IC XPNDR 400KHZ I2C 28QFN

Semtech Corporation

25,691 -
Datasheet - 28-UFQFN Exposed Pad Tape & Reel (TR) Active Not Verified 16 I2C Yes Keypad Controller, LED Output, POR Open Drain, Push-Pull 8mA, 15mA 400 kHz 1.425V ~ 3.6V -40°C ~ 85°C - - Surface Mount 28-QFN-UT (4x4)
MAX7321ATE+ Analog Devices Inc./Maxim Integrated

MAX7321ATE+

IC XPNDR 400KHZ I2C 16TQFN

Analog Devices Inc./Maxim Integrated

2,072 -
Datasheet - 16-WFQFN Exposed Pad Tube Active Not Verified 8 I2C Yes POR Open Drain, Push-Pull 20mA 400 kHz 1.71V ~ 5.5V -40°C ~ 125°C - - Surface Mount 16-TQFN (3x3)
MAX7321ATE+T Analog Devices Inc./Maxim Integrated

MAX7321ATE+T

IC XPNDR 400KHZ I2C 16TQFN

Analog Devices Inc./Maxim Integrated

19,343 -
Datasheet - 16-WFQFN Exposed Pad Tape & Reel (TR) Active Not Verified 8 I2C Yes POR Open Drain, Push-Pull 20mA 400 kHz 1.71V ~ 5.5V -40°C ~ 125°C - - Surface Mount 16-TQFN (3x3)
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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.