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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
TCA9554DWTIC XPNDR 400KHZ I2C 16SOIC |
2,105 |
|
Datasheet | - | 16-SOIC (0.295", 7.50mm Width) | Tape & Reel (TR) | Active | Not Verified | 8 | I2C | Yes | POR | Push-Pull | - | 400 kHz | 1.65V ~ 5.5V | -40°C ~ 85°C | - | - | Surface Mount | 16-SOIC |
|
NCA9535PW-Q100JI2C |
1,573 |
|
Datasheet | - | 24-TSSOP (0.173", 4.40mm Width) | Tape & Reel (TR) | Active | - | 16 | I2C, SMBus | Yes | POR | Push-Pull | 10mA, 25mA | 400 kHz | 1.65V ~ 5.5V | -40°C ~ 125°C | Automotive | AEC-Q100 | Surface Mount | 24-TSSOP |
|
|
PCAL9722HNMPLOW-VOLTAGE TRANSLATING 22-BIT S |
5,038 |
|
Datasheet | - | 32-VFQFN Exposed Pad | Tape & Reel (TR) | Active | - | 22 | SPI | Yes | POR | Open Drain, Push-Pull | 10mA, 25mA | 5 MHz | 1.1V ~ 5.5V, 1.65V ~ 5.5V | -40°C ~ 85°C | - | - | Surface Mount | 32-HVQFN (5x5) |
|
MCP23009T-E/MGIC XPNDR 3.4MHZ I2C 16QFN |
2,387 |
|
Datasheet | - | 16-VFQFN Exposed Pad | Tape & Reel (TR) | Active | Not Verified | 8 | I2C | Yes | POR | Open Drain | 25mA | 3.4 MHz | 1.8V ~ 5.5V | -40°C ~ 125°C | - | - | Surface Mount | 16-QFN (3x3) |
|
MCP23009T-E/SSIC XPNDR 3.4MHZ I2C 20SSOP |
752 |
|
Datasheet | - | 20-SSOP (0.209", 5.30mm Width) | Tape & Reel (TR) | Active | Not Verified | 8 | I2C | Yes | POR | Open Drain | 25mA | 3.4 MHz | 1.8V ~ 5.5V | -40°C ~ 125°C | - | - | Surface Mount | 20-SSOP |
|
PCA9574BS,118IC XPND 400KHZ I2C SMBUS 16HVQFN |
6,107 |
|
Datasheet | - | 16-VFQFN Exposed Pad | Tape & Reel (TR) | Active | Not Verified | 8 | I2C, SMBus | Yes | POR | Push-Pull | 1mA, 3mA | 400 kHz | 1.1V ~ 3.6V | -40°C ~ 85°C | - | - | Surface Mount | 16-HVQFN (3x3) |
|
PCA9538APWJIC XPND 400KHZ I2C SMBUS 16TSSOP |
3,473 |
|
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 | 1.65V ~ 5.5V | -40°C ~ 85°C | - | - | Surface Mount | 16-TSSOP |
|
|
KTS1622EUAA-TRLOW VOLTAGE 16-BIT I2C-BUS I/O E |
873 |
|
Datasheet | - | 24-WFQFN Exposed Pad | Tape & Reel (TR) | Active | - | 16 | I2C | Yes | POR | Open Drain, Push-Pull | 10mA, 25mA | 1 MHz | 1.65V ~ 5.5V | -40°C ~ 85°C | - | - | Surface Mount | 24-TQFN (4x4) |
|
PCA8574D,518IC XPNDR 400KHZ I2C 16SO |
4,279 |
|
Datasheet | - | 16-SOIC (0.295", 7.50mm Width) | Tape & Reel (TR) | Active | Not Verified | 8 | I2C | Yes | POR | Push-Pull | 100µA, 25mA | 400 kHz | 2.3V ~ 5.5V | -40°C ~ 85°C | - | - | Surface Mount | 16-SO |
|
TCA9539RGERIC XPNDR 400KHZ I2C SMBUS 24VQFN |
2,831 |
|
Datasheet | - | 24-VFQFN 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-VQFN (4x4) |
|
|
PCA8574APW,118IC XPNDR 400KHZ I2C 16TSSOP |
2,523 |
|
Datasheet | - | 16-TSSOP (0.173", 4.40mm Width) | Tape & Reel (TR) | Active | Not Verified | 8 | I2C | Yes | POR | Push-Pull | 100µA, 25mA | 400 kHz | 2.3V ~ 5.5V | -40°C ~ 85°C | - | - | Surface Mount | 16-TSSOP |
|
TCA6418EYFPRIC XPNDR 1MHZ I2C 25DSBGA |
1,206 |
|
Datasheet | - | 25-XFBGA, DSBGA | Tape & Reel (TR) | Active | Not Verified | 18 | I2C | Yes | Keypad Controller, POR | Push-Pull | 10mA, 25mA | 1 MHz | 1.65V ~ 3.6V | -40°C ~ 85°C | - | - | Surface Mount | 25-DSBGA |
|
|
MCP23S09-E/MGIC XPNDR 10MHZ SPI 16QFN |
5,135 |
|
Datasheet | - | 16-VFQFN Exposed Pad | Tube | Active | Not Verified | 8 | SPI | Yes | - | Open Drain | 25mA | 10 MHz | 1.8V ~ 5.5V | -40°C ~ 125°C | - | - | Surface Mount | 16-QFN (3x3) |
|
|
TCAL9538PWRTCAL9538PWR |
3,416 |
|
Datasheet | - | 16-TSSOP (0.173", 4.40mm Width) | Tape & Reel (TR) | Active | - | 8 | I2C, SMBus | Yes | POR | Open Drain, Push-Pull | 10mA, 25mA | 1 MHz | 1.08V ~ 3.6V | -40°C ~ 125°C | - | - | Surface Mount | 16-TSSOP |
|
|
TCAL9538RSVRTCAL9538RSVR |
920 |
|
Datasheet | - | 16-UFQFN | Tape & Reel (TR) | Active | - | 8 | I2C, SMBus | Yes | POR | Open Drain, Push-Pull | 10mA, 25mA | 1 MHz | 1.08V ~ 3.6V | -40°C ~ 125°C | - | - | Surface Mount | 16-UQFN (2.6x1.8) |
|
MCP23S09T-E/SOIC XPNDR 10MHZ SPI 18SOIC |
784 |
|
Datasheet | - | 18-SOIC (0.295", 7.50mm Width) | Tape & Reel (TR) | Active | Not Verified | 8 | SPI | Yes | - | Open Drain | 25mA | 10 MHz | 1.8V ~ 5.5V | -40°C ~ 125°C | - | - | Surface Mount | 18-SOIC |
|
PCF8574RGYRIC XPNDR 100KHZ I2C 20VQFN |
2,082 |
|
Datasheet | - | 20-VFQFN Exposed Pad | 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 | 20-VQFN (3.5x4.5) |
|
TCA9535DBTIC XPNDR 400KHZ I2C SMBUS 24SSOP |
1,953 |
|
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 | 1.65V ~ 5.5V | -40°C ~ 85°C | - | - | Surface Mount | 24-SSOP |
|
PCA9554ABS,118IC XPND 400KHZ I2C SMBUS 16HVQFN |
23,285 |
|
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) |
|
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PCA9554ABS3,118IC XPND 400KHZ I2C SMBUS 16HVQFN |
11,071 |
|
Datasheet | - | 16-VFQFN 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 (3x3) |
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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Submit the part number, manufacturer and required quantity through our RFQ form. ICMENU will review your request and provide available stock, pricing and sourcing information.