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.
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
PCA9674PW,118IC XPNDR 1MHZ I2C 16TSSOP |
4,125 | - |
|
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 |
|
PCA9555PW,118IC XPND 400KHZ I2C SMBUS 24TSSOP |
91,090 | - |
|
Datasheet | - | 24-TSSOP (0.173", 4.40mm 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-TSSOP |
|
TCA6424ARGJRIC XPNDR 400KHZ I2C SMBUS 32UQFN |
2,823 | - |
|
Datasheet | - | 32-UFQFN Exposed Pad | Tape & Reel (TR) | Active | Not Verified | 24 | I2C, SMBus | Yes | POR | Push-Pull | 10mA, 25mA | 400 kHz | 1.65V ~ 5.5V | -40°C ~ 85°C | - | - | Surface Mount | 32-UQFN (5x5) |
|
TCAL6416RTWR16-BIT TRANSLATING IC-BUS/SMBUS |
2,068 | - |
|
Datasheet | - | 24-WFQFN Exposed Pad | Tape & Reel (TR) | Active | - | 16 | I2C | Yes | POR | Open Drain, Push-Pull | 10mA, 25mA | 100 kHz | 1.08V ~ 3.6V | -40°C ~ 125°C | - | - | Surface Mount | 24-WQFN (4x4) |
|
PCAL9538APWJIC XPND 400KHZ I2C SMBUS 16TSSOP |
4,602 | - |
|
Datasheet | Agile | 16-TSSOP (0.173", 4.40mm Width) | Tape & Reel (TR) | Active | 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-TSSOP |
|
PI4IOE5V6416ZDEXIC XPNDR 400KHZ I2C 24TQFN |
6,375 | - |
|
Datasheet | - | 24-VFQFN 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-TQFN (4x4) |
|
PCA9535APW,118IC XPND 400KHZ I2C SMBUS 24TSSOP |
5,118 | - |
|
Datasheet | - | 24-TSSOP (0.173", 4.40mm Width) | 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-TSSOP |
|
PCA9701PW,118IC XPNDR 5MHZ SPI SERIAL 24TSSOP |
4,327 | - |
|
Datasheet | - | 24-TSSOP (0.173", 4.40mm Width) | Tape & Reel (TR) | Active | Not Verified | 16 (Input Only) | SPI Serial | Yes | - | Push-Pull | - | 5 MHz | 2.5V ~ 5.5V | -40°C ~ 125°C | - | - | Surface Mount | 24-TSSOP |
|
PCA9555APW,118IC XPND 400KHZ I2C SMBUS 24TSSOP |
2,078 | - |
|
Datasheet | - | 24-TSSOP (0.173", 4.40mm Width) | 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-TSSOP |
|
PCAL9555APW,118IC XPND 400KHZ I2C SMBUS 24TSSOP |
1,012 | - |
|
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 |
|
MCP23S17T-E/MLIC XPNDR 10MHZ SPI 28QFN |
34,710 | - |
|
Datasheet | - | 28-VQFN Exposed Pad | Tape & Reel (TR) | Active | Not Verified | 16 | SPI | Yes | POR | Push-Pull | 25mA | 10 MHz | 1.8V ~ 5.5V | -40°C ~ 125°C | - | - | Surface Mount | 28-QFN (6x6) |
|
MCP23018T-E/MJIC XPNDR 3.4MHZ I2C 24QFN |
6,076 | - |
|
Datasheet | - | 24-VFQFN Exposed Pad | Tape & Reel (TR) | Active | Not Verified | 16 | I2C | Yes | POR | Open Drain | 25mA | 3.4 MHz | 1.8V ~ 5.5V | -40°C ~ 125°C | - | - | Surface Mount | 24-QFN (4x4) |
|
MCP23018-E/MJIC XPNDR 3.4MHZ I2C 24QFN |
1,846 | - |
|
Datasheet | - | 24-VFQFN Exposed Pad | Tube | Active | Not Verified | 16 | I2C | Yes | POR | Open Drain | 25mA | 3.4 MHz | 1.8V ~ 5.5V | -40°C ~ 125°C | - | - | Surface Mount | 24-QFN (4x4) |
|
TCA9539QPWRQ1IC XPND 400KHZ I2C SMBUS 24TSSOP |
3,472 | - |
|
Datasheet | - | 24-TSSOP (0.173", 4.40mm Width) | Tape & Reel (TR) | Active | Not Verified | 16 | I2C, SMBus | Yes | POR | Push-Pull | 10mA, 25mA | 400 kHz | 1.65V ~ 3.6V | -40°C ~ 125°C | Automotive | AEC-Q100 | Surface Mount | 24-TSSOP |
|
PCA9539AHF,128IC XPND 400KHZ I2C SMBUS 24HWQFN |
20,005 | - |
|
Datasheet | - | 24-WFQFN 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-HWQFN (4x4) |
|
TCAL9539RTWRQ1AUTOMOTIVE 16-BIT LOW VOLTAGE IC |
7,329 | - |
|
Datasheet | - | 24-WFQFN Exposed Pad | Tape & Reel (TR) | Active | - | 16 | I2C, SMBus | Yes | POR | Open Drain, Push-Pull | 10mA, 25mA | 1 MHz | 1.08V ~ 3.6V | -40°C ~ 125°C | - | - | Surface Mount | 24-WQFN (4x4) |
|
PCAL9555AHF,128IC XPNDR 400KHZ I2C 24HWQFN |
2,208 | - |
|
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) |
|
MCP23016-I/SOIC XPNDR 400KHZ I2C 28SOIC |
830 | - |
|
Datasheet | - | 28-SOIC (0.295", 7.50mm Width) | Tube | Active | Not Verified | 16 | I2C | Yes | POR | Push-Pull | 25mA | 400 kHz | 2V ~ 5.5V | -40°C ~ 85°C | - | - | Surface Mount | 28-SOIC |
|
PCA9555AHF,128IC XPND 400KHZ I2C SMBUS 24HWQFN |
42,324 | - |
|
Datasheet | - | 24-WFQFN 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-HWQFN (4x4) |
|
MCP23S18-E/MJIC XPNDR 10MHZ SPI 24QFN |
8,985 | - |
|
Datasheet | - | 24-VFQFN Exposed Pad | Tube | Active | Not Verified | 16 | SPI | Yes | - | Open Drain | 25mA | 10 MHz | 1.8V ~ 5.5V | -40°C ~ 125°C | - | - | Surface Mount | 24-QFN (4x4) |
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.