I/O Expanders
Explore I/O Expanders parts from multiple manufacturers, with model information, availability, datasheets and technical specifications for engineering and purchasing.
For parts that are not shown in the list, send the manufacturer part number, quantity or BOM to ICMENU. Our team can assist with availability checks and quotation support.
| Photo | Mfr. Part # | Availability | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
MCP23017T-E/SSIC XPNDR 1.7MHZ I2C 28SSOP |
3,842 |
|
Datasheet | - | 28-SSOP (0.209", 5.30mm Width) | Tape & Reel (TR) | Active | Not Verified | 16 | I2C | Yes | POR | Push-Pull | 25mA | 1.7 MHz | 1.8V ~ 5.5V | -40°C ~ 125°C | - | - | Surface Mount | 28-SSOP |
|
MCP23S17T-E/SOIC XPNDR 10MHZ SPI 28SOIC |
3,398 |
|
Datasheet | - | 28-SOIC (0.295", 7.50mm Width) | 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-SOIC |
|
MCP23S17-E/MLIC XPNDR 10MHZ SPI 28QFN |
1,143 |
|
Datasheet | - | 28-VQFN Exposed Pad | Tube | 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) |
|
MCP23S09T-E/MGIC XPNDR 10MHZ SPI 16QFN |
3,678 |
|
Datasheet | - | 16-VFQFN Exposed Pad | Tape & Reel (TR) | Active | Not Verified | 8 | SPI | Yes | - | Open Drain | 25mA | 10 MHz | 1.8V ~ 5.5V | -40°C ~ 125°C | - | - | Surface Mount | 16-QFN (3x3) |
|
TCA9539RTWRIC XPNDR 400KHZ I2C SMBUS 24WQFN |
10,580 |
|
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-WQFN (4x4) |
|
PCF8574DWRIC XPNDR 100KHZ I2C 16SOIC |
3,341 |
|
Datasheet | - | 16-SOIC (0.295", 7.50mm Width) | Tape & Reel (TR) | Active | Not Verified | 8 | I2C | Yes | POR | Push-Pull | 1mA, 25mA | 100 kHz | 2.5V ~ 6V | -40°C ~ 85°C | - | - | Surface Mount | 16-SOIC |
|
|
MCP23S17T-E/SSIC XPNDR 10MHZ SPI 28SSOP |
13,799 |
|
Datasheet | - | 28-SSOP (0.209", 5.30mm Width) | Tape & Reel (TR) | Active | Not Verified | 16 | SPI | Yes | - | Push-Pull | 25mA | 10 MHz | 1.8V ~ 5.5V | -40°C ~ 125°C | - | - | Surface Mount | 28-SSOP |
|
MCP23S17-E/SPIC XPNDR 10MHZ SPI 28SDIP |
12,344 |
|
Datasheet | - | 28-DIP (0.300", 7.62mm) | Tube | Active | Not Verified | 16 | SPI | Yes | POR | Push-Pull | 25mA | 10 MHz | 1.8V ~ 5.5V | -40°C ~ 125°C | - | - | Through Hole | 28-SPDIP |
|
PCA9555DWRIC XPNDR 400KHZ I2C SMBUS 24SOIC |
5,688 |
|
Datasheet | - | 24-SOIC (0.295", 7.50mm 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-SOIC |
|
PCA9538BS,118IC XPND 400KHZ I2C SMBUS 16HVQFN |
10,278 |
|
Datasheet | - | 16-VQFN Exposed Pad | Tape & Reel (TR) | Active | Not Verified | 8 | I2C, SMBus | Yes | POR | Push-Pull | 10mA, 25mA | 400 kHz | 2.3V ~ 5.5V | -40°C ~ 85°C | - | - | Surface Mount | 16-HVQFN (4x4) |
|
PCA9534PW,118IC XPND 400KHZ I2C SMBUS 16TSSOP |
7,147 |
|
Datasheet | - | 16-TSSOP (0.173", 4.40mm Width) | Tape & Reel (TR) | Active | 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 |
|
|
PCA9534BS,118IC XPND 400KHZ I2C SMBUS 16HVQFN |
4,512 |
|
Datasheet | - | 16-VQFN Exposed Pad | Tape & Reel (TR) | Active | Not Verified | 8 | I2C, SMBus | Yes | POR | Push-Pull | 10mA, 25mA | 400 kHz | 2.3V ~ 5.5V | -40°C ~ 85°C | - | - | Surface Mount | 16-HVQFN (4x4) |
|
|
PCA9538PW,118IC XPND 400KHZ I2C SMBUS 16TSSOP |
3,655 |
|
Datasheet | - | 16-TSSOP (0.173", 4.40mm Width) | Tape & Reel (TR) | Active | 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 |
|
PCA9534D,118IC XPNDR 400KHZ I2C SMBUS 16SO |
2,987 |
|
Datasheet | - | 16-SOIC (0.295", 7.50mm Width) | Tape & Reel (TR) | Active | Not Verified | 8 | I2C, SMBus | Yes | POR | Push-Pull | 10mA, 25mA | 400 kHz | 2.3V ~ 5.5V | -40°C ~ 85°C | - | - | Surface Mount | 16-SO |
|
PCA9539APW,118IC XPND 400KHZ I2C SMBUS 24TSSOP |
5,155 |
|
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 |
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|
PCAL6524HEAZIC XPNDR 1MHZ I2C 32HUQFN |
69,856 |
|
Datasheet | - | 32-UFQFN Exposed Pad | Tape & Reel (TR) | Active | Not Verified | 24 | I2C | Yes | POR | Open Drain, Push-Pull | - | 1 MHz | 1.65V ~ 5.5V | -40°C ~ 85°C | - | - | Surface Mount | 32-HUQFN (5x5) |
|
|
PCAL6524HEHPIC XPNDR 1MHZ I2C 32HUQFN |
40,549 |
|
Datasheet | - | 32-UFQFN Exposed Pad | Tape & Reel (TR) | Active | Not Verified | 24 | I2C | Yes | POR | Open Drain, Push-Pull | - | 1 MHz | 1.65V ~ 5.5V | -40°C ~ 85°C | - | - | Surface Mount | 32-HUQFN (5x5) |
|
|
PCA9539PW,118IC XPND 400KHZ I2C SMBUS 24TSSOP |
26,234 |
|
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 |
|
|
MCP23017T-E/MLIC XPNDR 1.7MHZ I2C 28QFN |
5,014 |
|
Datasheet | - | 28-VQFN Exposed Pad | Tape & Reel (TR) | Active | Not Verified | 16 | I2C | Yes | POR | Push-Pull | 25mA | 1.7 MHz | 1.8V ~ 5.5V | -40°C ~ 125°C | - | - | Surface Mount | 28-QFN (6x6) |
|
|
MCP23017-E/MLIC XPNDR 1.7MHZ I2C 28QFN |
3,792 |
|
Datasheet | - | 28-VQFN Exposed Pad | Tube | Active | Not Verified | 16 | I2C | Yes | POR | Push-Pull | 25mA | 1.7 MHz | 1.8V ~ 5.5V | -40°C ~ 125°C | - | - | Surface Mount | 28-QFN (6x6) |
Frequently Asked Questions
What are I/O Expanders components used for?
I/O Expanders components are used in a wide range of electronic equipment and systems. Their exact function depends on the device, circuit design and technical requirements of the application.
How do I choose the right I/O Expanders part?
Compare the manufacturer part number, key specifications, package type, operating conditions, availability and datasheet information. For replacement projects, always verify the critical electrical and mechanical parameters before selecting an alternative.
Can ICMENU help source obsolete or hard-to-find I/O Expanders parts?
Yes. Send us the required manufacturer part number, quantity or BOM. Our sourcing team can help check stock availability, lead time, alternative sourcing options and quotation details.
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