What are IO Expanders ?
IO Expanders are integrated circuits that increase the number of I/O ports available on a microcontroller, allowing for more devices to be connected. They are widely used in applications such as wireless and RF signal chains, production electronics assembly, and engineering evaluation. Important specifications include Clock Frequency, which affects data transfer rates; Current, which determines power consumption; and Output Type, which influences signal compatibility. It's crucial for procurement teams to validate lifecycle status and consider alternate-source options to mitigate sourcing risks.
Parts in this category
Tap rows to select parts
Compare stocked parts across manufacturers and distributors, then add lines to your RFQ.
| Part & Mfr | Total Stock | Pricing & RFQ | AEC Qualified | Applications | Clock Frequency | Current | EEPROM Size | ESD Protection | Features | Halogen Free | Industrial Grade | Input Voltage | Interface | Interrupt Output | Latch-up Performance | Lead Spacing | Lead Style | Mounting Type | Number of Channels | Number of I | Number of I/O | Operating Temperature | Operating Temperature Range | Operating Voltage | Output Current | Output Type | Output Voltage | Package / Case | Package Quantity | Power Dissipation | Storage Temperature | Supplier Device Package | Supplier Package | Supply Current | Supply Voltage | Tape & Reel | Voltage | Voltage Supply | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Standard Microsystems
|
Send RFQ |
Price on request
Price and Stock
on Request Send RFQ |
- | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | |
Analog Devices / Maxim Integrated
|
Send RFQ |
Price on request
Price and Stock
on Request Send RFQ |
- | - | 400 kHz | 50mA | - | - | PWM | - | - | - | I²C | Yes | - | - | - | Surface Mount | - | 18 | - | -40°C ~ 125°C | - | - | - | Open Drain | - | - | - | - | - | 24-TQFN (4x4) | - | - | - | - | 2V ~ 3.6V | - | |
Analog Devices / Maxim Integrated
|
Send RFQ |
Price on request
Price and Stock
on Request Send RFQ |
- | - | 400 kHz | 4.5mA, 10mA | - | - | - | - | - | - | I²C | Yes | - | - | - | Surface Mount | - | 28 | - | -40°C ~ 125°C | - | - | - | Push-Pull | - | - | - | - | - | 36-SSOP | - | - | - | - | 2.5V ~ 5.5V | - | |
Harris Semiconductor
|
Send RFQ |
Price on request
Price and Stock
on Request Send RFQ |
- | - | - | 4.4mA, 6.1mA | - | - | - | - | - | - | Parallel | No | - | - | - | Through Hole | - | 8 | - | -55°C ~ 125°C | - | - | - | - | - | - | - | - | - | 24-SBDIP | - | - | - | - | 4V ~ 6.5V | - | |
Analog Devices / Maxim Integrated
|
Send RFQ |
Price on request
Price and Stock
on Request Send RFQ |
- | - | 400 kHz | 4.5mA, 10mA | - | - | - | - | - | - | I²C, 2-Wire Serial | Yes | - | - | - | Surface Mount | - | 20 | - | -40°C ~ 125°C | - | - | - | Push-Pull | - | - | - | - | - | 28-SSOP | - | - | - | - | 2.5V ~ 5.5V | - | |
Texas Instruments
|
Send RFQ |
Price on request
Price and Stock
on Request Send RFQ |
- | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | |
Texas Instruments
|
Send RFQ |
Price on request
Price and Stock
on Request Send RFQ |
- | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | |
|
Standard Microsystems
|
Send RFQ |
Price on request
Price and Stock
on Request Send RFQ |
- | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | |
Texas Instruments
|
Send RFQ |
Price on request
Price and Stock
on Request Send RFQ |
- | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | |
Motorola Semicondutor
|
Send RFQ |
Price on request
Price and Stock
on Request Send RFQ |
- | - | - | - | - | - | - | - | - | - | - | No | - | - | - | Surface Mount | - | 4 | - | -55°C ~ 125°C | - | - | - | - | - | - | - | - | - | 14-CFlatPack | - | - | - | - | 5.2V | - | |
Analog Devices / Maxim Integrated
|
Send RFQ |
Price on request
Price and Stock
on Request Send RFQ |
- | - | 400 kHz | 50mA | - | - | PWM | - | - | - | I²C | Yes | - | - | - | Surface Mount | - | 18 | - | -40°C ~ 125°C | - | - | - | Open Drain | - | - | - | - | - | 24-QSOP | - | - | - | - | 2V ~ 3.6V | - | |
Rochester Electronics
|
Send RFQ |
Price on request
Price and Stock
on Request Send RFQ |
- | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | |
Rochester Electronics
|
Send RFQ |
Price on request
Price and Stock
on Request Send RFQ |
- | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | |
Diodes Incorporated
|
Send RFQ |
Price on request
Price and Stock
on Request Send RFQ |
- | - | 1 MHz | - | - | - | - | - | - | - | I²C | Yes | - | - | - | Surface Mount | - | - | - | - | - | - | - | Open Drain | - | - | - | - | - | 8-MSOP-EP | - | - | - | - | 2.3V ~ 5.5V | - | |
Maxlinear
|
Send RFQ |
Price on request
Price and Stock
on Request Send RFQ |
- | - | 400 kHz | - | - | - | - | - | - | - | I²C, SMBus | Yes | - | - | - | Surface Mount | - | 8 | - | -40°C ~ 85°C | - | - | - | Open Drain | - | - | - | - | - | 16-TSSOP | - | - | - | - | 1.65V ~ 3.6V | - | |
|
Diodes Incorporated
|
Send RFQ |
Price on request
Price and Stock
on Request Send RFQ |
- | - | 400 kHz | 10mA, 24mA | - | - | POR | - | - | - | I²C, SMBus | Yes | - | - | - | Surface Mount | - | 8 | - | -40°C ~ 85°C | - | - | - | Push-Pull | - | - | - | - | - | 16-TQFN (3x3) | - | - | - | - | 2.3V ~ 5.5V | - | |
Diodes Incorporated
|
Send RFQ |
Price on request
Price and Stock
on Request Send RFQ |
- | - | 400 kHz | - | - | - | - | - | - | - | I²C | Yes | - | - | - | Surface Mount | - | 8 | - | -40°C ~ 85°C | - | - | - | - | - | - | - | - | - | 16-TSSOP | - | - | - | - | 2.3V ~ 5.5V | - | |
Diodes Incorporated
|
Send RFQ |
Price on request
Price and Stock
on Request Send RFQ |
- | - | 400 kHz | - | - | - | POR | - | - | - | SMBus | Yes | - | - | - | Surface Mount | - | 8 | - | - | - | - | - | Open Drain | - | - | - | - | - | 16-TSSOP | - | - | - | - | 2.3V ~ 5.5V | - | |
Lumissil Microsystems
|
Send RFQ |
Price on request
Price and Stock
on Request Send RFQ |
- | - | 400 kHz | 10mA, 20mA | - | - | POR | - | - | - | I²C | Yes | - | - | - | Surface Mount | - | 4 | - | -40°C ~ 125°C | - | - | - | Open Drain | - | - | - | - | - | 16-QFN (3x3) | - | - | - | - | 2.4V ~ 5.5V | - | |
Maxlinear
|
Send RFQ |
Price on request
Price and Stock
on Request Send RFQ |
- | - | 400 kHz | - | - | - | - | - | - | - | I²C, SMBus | Yes | - | - | - | Surface Mount | - | 8 | - | -40°C ~ 85°C | - | - | - | Open Drain | - | - | - | - | - | 16-TSSOP | - | - | - | - | 1.65V ~ 3.6V | - | |
Diodes Incorporated
|
Send RFQ |
Price on request
Price and Stock
on Request Send RFQ |
- | - | 400 kHz | - | - | - | - | - | - | - | I²C | Yes | - | - | - | Surface Mount | - | 16 | - | -40°C ~ 85°C | - | - | - | - | - | - | - | - | - | 24-TSSOP | - | - | - | - | 2.3V ~ 5.5V | - | |
Maxlinear
|
Send RFQ |
Price on request
Price and Stock
on Request Send RFQ |
- | - | 400 kHz | - | - | - | - | - | - | - | I²C, SMBus | Yes | - | - | - | Surface Mount | - | 16 | - | -40°C ~ 85°C | - | - | - | Open Drain | - | - | - | - | - | 24-QFN (4x4) | - | - | - | - | 1.65V ~ 3.6V | - | |
Lumissil Microsystems
|
Send RFQ |
Price on request
Price and Stock
on Request Send RFQ |
- | - | 400 kHz | 10mA, 20mA | - | - | POR | - | - | - | I²C, Serial | Yes | - | - | - | Surface Mount | - | 8 | - | -40°C ~ 125°C | - | - | - | Open Drain | - | - | - | - | - | 24-QFN (4x4) | - | - | - | - | 2.4V ~ 5.5V | - | |
|
Maxlinear
|
Send RFQ |
Price on request
Price and Stock
on Request Send RFQ |
- | - | 400 kHz | - | - | - | - | - | - | - | I²C, SMBus | Yes | - | - | - | Surface Mount | - | 8 | - | -40°C ~ 85°C | - | - | - | Open Drain | - | - | - | - | - | 16-QFN (3x3) | - | - | - | - | 1.65V ~ 3.6V | - | |
Maxlinear
|
Send RFQ |
Price on request
Price and Stock
on Request Send RFQ |
- | - | 400 kHz | - | - | - | - | - | - | - | I²C, SMBus | Yes | - | - | - | Surface Mount | - | 16 | - | -40°C ~ 85°C | - | - | - | Open Drain | - | - | - | - | - | 24-TSSOP | - | - | - | - | 1.65V ~ 3.6V | - | |
Nuvoton Technology
|
Send RFQ |
Price on request
Price and Stock
on Request Send RFQ |
- | - | - | 16mA | - | - | Buzzer Outputs, LED Outputs, POR | - | - | - | SMBus | Yes | - | - | - | Surface Mount | - | 8 | - | 0°C ~ 70°C | - | - | - | Open Drain, Push-Pull | - | - | - | - | - | 14-SOP | - | - | - | - | 3.3V | - | |
Diodes Incorporated
|
Send RFQ |
Price on request
Price and Stock
on Request Send RFQ |
- | - | 400 kHz | 10mA, 25mA | - | - | POR | - | - | - | I²C | Yes | - | - | - | Surface Mount | - | 16 | - | -40°C ~ 105°C | - | - | - | Push-Pull | - | - | - | - | - | 24-TSSOP | - | - | - | - | 1.65V ~ 5.5V | - | |
Diodes Incorporated
|
Send RFQ |
Price on request
Price and Stock
on Request Send RFQ |
- | - | 400 kHz | - | - | - | - | - | - | - | I²C | Yes | - | - | - | Surface Mount | - | 16 | - | -40°C ~ 85°C | - | - | - | - | - | - | - | - | - | 24-TQFN (4x4) | - | - | - | - | 2.3V ~ 5.5V | - | |
|
Lumissil Microsystems
|
Send RFQ |
Price on request
Price and Stock
on Request Send RFQ |
- | - | 400 kHz | 20mA | - | - | POR | - | - | - | I²C, Serial | Yes | - | - | - | Surface Mount | - | 8 | - | -40°C ~ 125°C | - | - | - | Open Drain | - | - | - | - | - | 24-SOP | - | - | - | - | 2.4V ~ 5.5V | - | |
Maxlinear
|
Send RFQ |
Price on request
Price and Stock
on Request Send RFQ |
- | - | 400 kHz | - | - | - | - | - | - | - | I²C, SMBus | Yes | - | - | - | Surface Mount | - | 16 | - | -40°C ~ 85°C | - | - | - | - | - | - | - | - | - | 24-TSSOP | - | - | - | - | 1.65V ~ 3.6V | - | |
Diodes Incorporated
|
Send RFQ |
Price on request
Price and Stock
on Request Send RFQ |
- | - | 400 kHz | 10mA, 25mA | - | - | POR | - | - | - | I²C | Yes | - | - | - | Surface Mount | - | 16 | - | -40°C ~ 105°C | - | - | - | Push-Pull | - | - | - | - | - | 24-TSSOP | - | - | - | - | 1.65V ~ 5.5V | - | |
Analog Devices / Maxim Integrated
|
Send RFQ |
Price on request
Price and Stock
on Request Send RFQ |
- | - | 400 kHz | 25mA | - | - | POR | - | - | - | I²C | No | - | - | - | Surface Mount | - | 8 (Output Only) | - | -40°C ~ 125°C | - | - | - | Open Drain, Push-Pull | - | - | - | - | - | 16-QSOP | - | - | - | - | 1.71V ~ 5.5V | - | |
Nuvoton Technology
|
Send RFQ |
Price on request
Price and Stock
on Request Send RFQ |
- | - | - | 16mA | - | - | Buzzer Outputs, LED Outputs, POR | - | - | - | SMBus | Yes | - | - | - | Surface Mount | - | 14 | - | 0°C ~ 70°C | - | - | - | Open Drain, Push-Pull | - | - | - | - | - | 20-SSOP | - | - | - | - | 3.3V | - | |
Texas Instruments
|
Send RFQ |
Price on request
Price and Stock
on Request Send RFQ |
- | - | 400 kHz | 10mA, 25mA | - | - | POR | - | - | - | I²C, SMBus | Yes | - | - | - | Surface Mount | - | 8 | - | -40°C ~ 85°C | - | - | - | Push-Pull | - | - | - | - | - | 16-TVSOP | - | - | - | - | 2.3V ~ 5.5V | - | |
|
Maxlinear
|
Send RFQ |
Price on request
Price and Stock
on Request Send RFQ |
- | - | 400 kHz | - | - | - | - | - | - | - | I²C, SMBus | Yes | - | - | - | Surface Mount | - | 8 | - | -40°C ~ 85°C | - | - | - | Open Drain | - | - | - | - | - | 16-QFN (3x3) | - | - | - | - | 1.65V ~ 3.6V | - | |
|
Maxlinear
|
Send RFQ |
Price on request
Price and Stock
on Request Send RFQ |
- | - | 26 MHz | - | - | - | - | - | - | - | SPI | Yes | - | - | - | Surface Mount | - | 16 | - | -40°C ~ 85°C | - | - | - | Open Drain | - | - | - | - | - | 24-TSSOP | - | - | - | - | 1.65V ~ 3.6V | - | |
|
Semtech
|
Send RFQ |
Price on request
Price and Stock
on Request Send RFQ |
- | - | 400 kHz | 8mA, 15mA | - | - | - | - | - | - | I²C | No | - | - | - | Surface Mount | - | 8 | - | -40°C ~ 85°C | - | - | - | Open Drain, Push-Pull | - | - | - | - | - | 20-QFN-UT (3x3) | - | - | - | - | 1.425V ~ 3.6V | - | |
Maxlinear
|
Send RFQ |
Price on request
Price and Stock
on Request Send RFQ |
- | - | 26 MHz | - | - | - | - | - | - | - | SPI | Yes | - | - | - | Surface Mount | - | 8 | - | -40°C ~ 85°C | - | - | - | Open Drain | - | - | - | - | - | 16-TSSOP | - | - | - | - | 1.65V ~ 3.6V | - | |
|
Maxlinear
|
Send RFQ |
Price on request
Price and Stock
on Request Send RFQ |
- | - | 26 MHz | - | - | - | - | - | - | - | SPI | Yes | - | - | - | Surface Mount | - | 8 | - | -40°C ~ 85°C | - | - | - | Open Drain | - | - | - | - | - | 16-QFN (3x3) | - | - | - | - | 1.65V ~ 3.6V | - | |
|
Texas Instruments
|
Send RFQ |
Price on request
Price and Stock
on Request Send RFQ |
- | - | 100 kHz | 10mA, 25mA | - | - | POR | - | - | - | I²C | Yes | - | - | - | Surface Mount | - | 16 | - | -40°C ~ 125°C | - | - | - | Open Drain, Push-Pull | - | - | - | - | - | 24-WQFN (4x4) | - | - | - | - | 1.08V ~ 3.6V | - | |
Maxlinear
|
Send RFQ |
Price on request
Price and Stock
on Request Send RFQ |
- | - | 26 MHz | - | - | - | - | - | - | - | SPI | Yes | - | - | - | Surface Mount | - | 16 | - | -40°C ~ 85°C | - | - | - | Open Drain | - | - | - | - | - | 24-QFN (4x4) | - | - | - | - | 1.65V ~ 3.6V | - | |
|
Maxlinear
|
Send RFQ |
Price on request
Price and Stock
on Request Send RFQ |
- | - | 26 MHz | - | - | - | - | - | - | - | SPI | Yes | - | - | - | Surface Mount | - | 16 | - | -40°C ~ 85°C | - | - | - | Open Drain | - | - | - | - | - | 24-QFN (4x4) | - | - | - | - | 1.65V ~ 3.6V | - | |
Diodes Incorporated
|
Send RFQ |
Price on request
Price and Stock
on Request Send RFQ |
- | - | 400 kHz | - | - | - | - | - | - | - | I²C | Yes | - | - | - | Surface Mount | - | 16 | - | -40°C ~ 85°C | - | - | - | - | - | - | - | - | - | 24-TSSOP | - | - | - | - | 2.3V ~ 5.5V | - | |
|
Nuvoton Technology
|
Send RFQ |
Price on request
Price and Stock
on Request Send RFQ |
- | - | 400 kHz | - | - | - | POR | - | - | - | I²C, SMBus | Yes | - | - | - | Surface Mount | - | 16 | - | -40°C ~ 85°C | - | - | - | Open Drain | - | - | - | - | - | 24-QFN (4x4) | - | - | - | - | 2.3V ~ 5.5V | - | |
|
Nuvoton Technology
|
Send RFQ |
Price on request
Price and Stock
on Request Send RFQ |
- | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | |
Analog Devices / Maxim Integrated
|
Send RFQ |
Price on request
Price and Stock
on Request Send RFQ |
- | - | 400 kHz | 20mA | - | - | POR | - | - | - | I²C | Yes | - | - | - | Surface Mount | - | 8 | - | -40°C ~ 125°C | - | - | - | Open Drain, Push-Pull | - | - | - | - | - | 16-TQFN (3x3) | - | - | - | - | 1.71V ~ 5.5V | - | |
|
Nuvoton Technology
|
Send RFQ |
Price on request
Price and Stock
on Request Send RFQ |
- | - | 400 kHz | - | - | - | LED Output(s), POR | - | - | - | I²C, SMBus | Yes | - | - | - | Surface Mount | - | 16 | - | -40°C ~ 85°C | - | - | - | Open Drain | - | - | - | - | - | 24-TSSOP | - | - | - | - | 2.3V ~ 5.5V | - | |
Analog Devices / Maxim Integrated
|
Send RFQ |
Price on request
Price and Stock
on Request Send RFQ |
- | - | 100 kHz | 25mA | - | - | POR | - | - | - | I²C | Yes | - | - | - | Surface Mount | - | 8 | - | -40°C ~ 125°C | - | - | - | Open Drain | - | - | - | - | - | 16-SOIC | - | - | - | - | 2.5V ~ 5.5V | - | |
On Semiconductor
|
Send RFQ |
Price on request
Price and Stock
on Request Send RFQ |
- | - | - | - | - | - | - | - | - | - | - | No | - | - | - | - | - | - | - | -40°C ~ 85°C | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 2V ~ 6V | - | |
|
SparkFun Electronics
|
Send RFQ |
Price on request
Price and Stock
on Request Send RFQ |
- | - | 1.7 MHz | 3mA | - | - | POR | - | - | - | I²C | Yes | - | - | - | Through Hole | - | 8 | - | - | - | - | - | Open Drain | - | - | - | - | - | 18-PDIP | - | - | - | - | 1.8V ~ 5.5V | - |
Showing 501-550 of 1,100 products