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
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| Part & Mfr | Clock Frequency | Current | Features | Interface | Interrupt Output | Mounting Type | Number of I | Operating Temperature | Output Type | Supplier Device Package | Voltage | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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NXP Semiconductors
|
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400 kHz | 10mA, 25mA | POR | I²C, SMBus | Yes | Surface Mount | 16 | -40°C ~ 85°C | Open Drain, Push-Pull | 24-XFBGA (2x2) | 1.65V ~ 5.5V | |
Skyworks Solutions
|
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- | - | - | Serial | No | Surface Mount | 3 | -40°C ~ 85°C | - | 8-SC70JW | 1.8V ~ 5.5V | |
Skyworks Solutions
|
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- | - | - | Serial | No | Surface Mount | 5 | -40°C ~ 85°C | Push-Pull | 8-SC70JW | 1.8V ~ 5.5V | |
NXP Semiconductors
|
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400 kHz | 50mA | POR | I²C | Yes | Surface Mount | 16 | -40°C ~ 85°C | Open Drain | 24-HVQFN (4x4) | 2.3V ~ 5.5V | |
On Semiconductor
|
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- | - | - | Parallel | No | Surface Mount | 24 | -40°C ~ 85°C | CMOS, Open-Drain | 36-MFPSDJ | 2V ~ 6V | |
On Semiconductor
|
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- | - | - | Parallel | No | Surface Mount | 24 | -40°C ~ 85°C | CMOS, Open-Drain | 36-MFPSDJ | 2V ~ 6V | |
On Semiconductor
|
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- | - | - | - | No | - | - | -40°C ~ 85°C | - | - | 2V ~ 6V | |
On Semiconductor
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- | - | - | - | No | - | - | -40°C ~ 85°C | - | - | 2V ~ 6V | |
NXP Semiconductors
|
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400 kHz | 10mA, 25mA | POR | I²C, SMBus | Yes | Surface Mount | 16 | -40°C ~ 85°C | Open Drain, Push-Pull | 24-UFBGA (2x2) | 1.65V ~ 5.5V | |
Analog Devices / Maxim Integrated
|
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26 MHz | 4.5mA, 10mA | - | SPI | Yes | Through Hole | 28 | -40°C ~ 125°C | Push-Pull | 28-PDIP | 2.5V ~ 5.5V | |
Analog Devices / Maxim Integrated
|
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100 kHz | - | - | 2-Wire | No | Surface Mount | 8 | -40°C ~ 125°C | Open Drain | 20-SSOP | 2.5V ~ 5.5V | |
Analog Devices / Maxim Integrated
|
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100 kHz | - | - | 2-Wire | No | Surface Mount | 8 | -40°C ~ 125°C | Open Drain | 20-SSOP | 2.5V ~ 5.5V | |
|
Semtech
|
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20 MHz | 8mA, 15mA | - | SPI | No | Surface Mount | 8 | -40°C ~ 85°C | Open Drain, Push-Pull | 20-QFN-UT (3x3) | 1.425V ~ 3.6V | |
NXP Semiconductors
|
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400 kHz | 100µA, 25mA | POR | I²C | Yes | Surface Mount | 8 | -40°C ~ 85°C | Push-Pull | 16-SO | 2.3V ~ 5.5V | |
Integrated Silicon Solution
|
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400 kHz | 10mA, 20mA | POR | I²C, Serial | Yes | Surface Mount | 8 | -40°C ~ 125°C | Open Drain | 24-SOP | 2.4V ~ 5.5V | |
Analog Devices / Maxim Integrated
|
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100 kHz | - | POR | SMBus | No | Surface Mount | 8 | -40°C ~ 85°C | Open Drain | 16-QSOP | 2.7V ~ 5.5V | |
Analog Devices / Maxim Integrated
|
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100 kHz | - | POR | SMBus | No | Surface Mount | 8 | -40°C ~ 85°C | Open Drain | 16-QSOP | 2.7V ~ 5.5V | |
Diodes Incorporated
|
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400 kHz | - | - | I²C | No | Surface Mount | 8 | -40°C ~ 85°C | - | 16-TSSOP | 2.3V ~ 5.5V | |
Renesas
|
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- | 2.5mA | - | Parallel | No | Surface Mount | 24 | 0°C ~ 70°C | Open Drain | 44-PLCC (16.58x16.58) | 4.5V ~ 5.5V | |
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Maxlinear
|
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400 kHz | - | - | I²C, SMBus | Yes | Surface Mount | 8 | -40°C ~ 85°C | Open Drain | 16-QFN (3x3) | 1.65V ~ 3.6V | |
|
Maxlinear
|
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400 kHz | - | - | I²C, SMBus | Yes | Surface Mount | 8 | -40°C ~ 85°C | Open Drain | 16-QFN (3x3) | 1.65V ~ 3.6V | |
|
Maxlinear
|
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400 kHz | - | - | I²C, SMBus | Yes | Surface Mount | 8 | -40°C ~ 85°C | Open Drain | 16-QFN (3x3) | 1.65V ~ 3.6V | |
Maxlinear
|
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400 kHz | - | - | I²C, SMBus | Yes | Surface Mount | 16 | -40°C ~ 85°C | Push-Pull | 24-QFN (4x4) | 1.65V ~ 3.6V | |
Maxlinear
|
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400 kHz | - | - | I²C, SMBus | Yes | Surface Mount | 8 | -40°C ~ 85°C | Open Drain | 16-TSSOP | 1.65V ~ 3.6V | |
|
Maxlinear
|
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400 kHz | - | - | I²C, SMBus | Yes | Surface Mount | 8 | -40°C ~ 85°C | Open Drain | 16-QFN (3x3) | 1.65V ~ 3.6V | |
|
Maxlinear
|
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400 kHz | - | - | I²C, SMBus | Yes | Surface Mount | 8 | -40°C ~ 85°C | Open Drain | 16-QFN (3x3) | 1.65V ~ 3.6V | |
|
Maxlinear
|
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400 kHz | - | - | I²C, SMBus | Yes | Surface Mount | 8 | -40°C ~ 85°C | Open Drain | 16-QFN (3x3) | 1.65V ~ 3.6V | |
Maxlinear
|
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400 kHz | - | - | I²C, SMBus | Yes | Surface Mount | 16 | -40°C ~ 85°C | Open Drain | 24-QFN (4x4) | 1.65V ~ 3.6V | |
Maxlinear
|
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400 kHz | - | - | I²C, SMBus | Yes | Surface Mount | 8 | -40°C ~ 85°C | Open Drain | 16-TSSOP | 1.65V ~ 3.6V | |
|
Maxlinear
|
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Price on request
Price and Stock
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400 kHz | - | - | I²C, SMBus | Yes | Surface Mount | 8 | -40°C ~ 85°C | Open Drain | 16-QFN (3x3) | 1.65V ~ 3.6V | |
|
Maxlinear
|
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Price on request
Price and Stock
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400 kHz | - | - | I²C, SMBus | Yes | Surface Mount | 8 | -40°C ~ 85°C | Open Drain | 16-QFN (3x3) | 1.65V ~ 3.6V | |
|
Maxlinear
|
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Price on request
Price and Stock
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400 kHz | - | - | I²C, SMBus | Yes | Surface Mount | 16 | -40°C ~ 85°C | Open Drain | 24-TSSOP | 1.65V ~ 3.6V | |
Maxlinear
|
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Price on request
Price and Stock
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400 kHz | - | - | I²C, SMBus | Yes | Surface Mount | 16 | -40°C ~ 85°C | Open Drain | 24-QFN (4x4) | 1.65V ~ 3.6V | |
|
Maxlinear
|
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Price on request
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26 MHz | - | - | SPI | 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
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26 MHz | - | - | SPI | 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
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26 MHz | - | - | SPI | Yes | Surface Mount | 8 | -40°C ~ 85°C | Open Drain | 16-TSSOP | 1.65V ~ 3.6V | |
|
Maxlinear
|
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Price on request
Price and Stock
on Request |
26 MHz | - | - | SPI | Yes | Surface Mount | 8 | -40°C ~ 85°C | Open Drain | 16-QFN (3x3) | 1.65V ~ 3.6V | |
|
Maxlinear
|
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Price on request
Price and Stock
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26 MHz | - | - | SPI | Yes | Surface Mount | 16 | -40°C ~ 85°C | Open Drain | 24-TSSOP | 1.65V ~ 3.6V | |
|
Diodes Incorporated
|
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1 MHz | 20mA | - | I²C | Yes | Surface Mount | 1 | - | - | 8-UQFN (1.6x1.6) | 2.3V ~ 5.5V | |
Diodes Incorporated
|
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1 MHz | - | - | I²C | Yes | Surface Mount | - | - | Open Drain | 8-MSOP-EP | 2.3V ~ 5.5V | |
Diodes Incorporated
|
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1 MHz | - | - | I²C | No | Surface Mount | 4 | - | Push-Pull | 8-MSOP | 2.3V ~ 5.5V | |
Semtech
|
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20 MHz | 8mA, 15mA | - | SPI | No | Surface Mount | 16 | -40°C ~ 85°C | Open Drain, Push-Pull | 28-QFN-UT (4x4) | 1.425V ~ 3.6V | |
|
Microchip Technology
|
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- | - | - | - | No | - | 24 | - | - | - | - | |
|
Microchip Technology
|
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- | - | - | - | No | - | 24 | - | - | - | - | |
|
Microchip Technology
|
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- | - | - | - | No | - | 24 | - | - | - | - | |
|
Microchip Technology
|
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- | - | - | - | No | - | 24 | - | - | - | - | |
|
Microchip Technology
|
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- | - | - | - | No | - | 24 | - | - | - | - | |
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Microchip Technology
|
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- | - | - | - | No | - | 24 | - | - | - | - | |
|
Microchip Technology
|
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10 MHz | 25mA | POR | SPI | Yes | Surface Mount | 16 | -40°C ~ 125°C | Open Drain | 24-QFN (4x4) | 1.8V ~ 5.5V | |
Microchip Technology
|
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10 MHz | 25mA | POR | I²C | Yes | Surface Mount | 8 | -40°C ~ 125°C | Push-Pull | 20-SSOP | 4.5V ~ 5.5V |
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