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 | ESD Protection | Features | Interface | Interrupt Output | Latch-up Performance | Lead Spacing | Mounting Type | Number of Bits | Number of I | Operating Temperature | Operating Voltage | Output Type | Power Dissipation | Supplier Device Package | Supplier Package | Tape & Reel | Voltage | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
NXP Semiconductors
|
5
|
$1.15
|
400 kHz | 10 mA, 25 mA | - | POR | I²C, SMBus | Yes | - | - | Surface Mount | - | 16 | -40°C ~ 85°C | - | Push-Pull | 200 mW | 24-SSOP | - | - | 2.3 V to 5.5 V | |
NXP Semiconductors
|
5
|
$1.15
|
400 kHz | 10mA, 25mA | - | POR | I²C, SMBus | Yes | - | - | Surface Mount | - | 16 | -40°C ~ 85°C | - | Push-Pull | - | 24-HWQFN (4x4) | 24-HWQFN (4x4) | - | 2.3V to 5.5V | |
Texas Instruments
|
5
|
$1.42
|
400 kHz | 10mA, 25mA | 2000V HBM, 1000V CDM | POR | I²C, SMBus | Yes | > 100 mA | - | Surface Mount | - | 16 | -40°C ~ 85°C | - | Push-Pull | - | 24-SOIC | 24-SOIC | - | 2.3V ~ 5.5V | |
Maxlinear
|
5
|
$1.15
|
26 MHz | - | - | - | SPI | Yes | - | - | Surface Mount | - | 16 | -40°C to 85°C | - | Push-Pull | - | 24-QFN (4x4) | 24-QFN (4x4) | - | 1.65V to 3.6V | |
NXP Semiconductors
|
4
|
$1.15
|
400 kHz | - | - | - | I²C, SPI | Yes | - | - | Surface Mount | - | 8 | -40°C to +85°C | 2.5 V or 3.3 V | Push-Pull | - | 24-HVQFN (4x4) | - | No | 2.3 V / 3.6 V | |
Analog Devices / Maxim Integrated
|
4
|
$1.15
|
400 kHz | 50mA | - | PWM | I2C, SMBus | Yes | - | 4 mm | Surface Mount | - | 16 | -40°C ~ 125°C | - | Open Drain | - | 24-TQFN (4x4) | 24-TQFN (4x4) | - | 2V ~ 3.6V | |
Harris Semiconductor
|
3
|
Price on request
|
- | - | - | - | - | Yes | - | - | Through Hole | 8bit | 24 | 0°C ~ 70°C | - | - | - | 40-PDIP | - | - | 4.5V ~ 5.5V | |
Renesas
|
2
|
Price on request
|
- | 2.5mA | - | - | Parallel | No | - | 15.24 mm | Through Hole | - | 24 | 0°C ~ 70°C | - | Open Drain | - | 40-PDIP | 40-PDIP | - | 4.5V ~ 5.5V | |
Diodes Incorporated
|
1
|
$1.15
|
1 MHz | 25mA | - | Yes | I²C, SMBus | Yes | - | 3 mm | Surface Mount | - | 24 | -40°C ~ 85°C | - | Open Drain | - | 32-TQFN (3x6) | 32-TQFN (3x6) | - | 2.3V to 5.5V | |
Texas Instruments
|
Send RFQ |
Price on request
Price and Stock
on Request |
400 kHz | 10mA, 25mA | - | POR | I²C, SMBus | Yes | - | - | Surface Mount | - | 8 | -40°C ~ 85°C | - | Push-Pull | - | 16-SOIC | - | - | 2.3V ~ 5.5V | |
Diodes Incorporated
|
Send RFQ |
Price on request
Price and Stock
on Request |
1 MHz | 50mA | - | POR | SMBus | No | - | - | Surface Mount | - | 4 | -40°C ~ 85°C | - | - | - | 8-MSOP | - | - | 2.3V ~ 5.5V | |
Texas Instruments
|
Send RFQ |
Price on request
Price and Stock
on Request |
400 kHz | - | - | POR | I²C | Yes | - | - | Surface Mount | - | 8 | -40°C ~ 85°C | - | Push-Pull | - | 16-SOIC | - | - | 1.65V ~ 5.5V | |
NXP Semiconductors
|
Send RFQ |
Price on request
Price and Stock
on Request |
400 kHz | 10mA, 25mA | - | POR | I²C, SMBus | Yes | - | - | Surface Mount | - | 8 | -40°C ~ 85°C | - | Open Drain, Push-Pull | - | 16-X2QFN (1.6x1.6) | - | - | 1.65V ~ 5.5V | |
Texas Instruments
|
Send RFQ |
Price on request
Price and Stock
on Request |
400 kHz | - | - | - | I²C | Yes | - | - | Surface Mount | - | 8 | -40°C ~ 85°C | - | Push-Pull | - | 16-SOIC | - | - | 1.65V ~ 5.5V | |
Texas Instruments
|
Send RFQ |
Price on request
Price and Stock
on Request |
400 kHz | - | - | - | I²C | Yes | - | - | Surface Mount | - | 8 | -40°C ~ 85°C | - | Push-Pull | - | 16-SOIC | - | - | 1.65V ~ 5.5V | |
Texas Instruments
|
Send RFQ |
Price on request
Price and Stock
on Request |
1 MHz | 10mA, 25mA | - | POR | I²C, SMBus | Yes | - | - | Surface Mount | - | 4 | -40°C ~ 125°C | - | Open Drain | - | 8-VSSOP | - | - | 1.65V ~ 5.5V | |
Diodes Incorporated
|
Send RFQ |
Price on request
Price and Stock
on Request |
400 kHz | - | - | - | I²C | Yes | - | - | Surface Mount | - | 8 | -40°C ~ 85°C | - | - | - | 16-TSSOP | - | - | 2.3V ~ 5.5V | |
Microchip Technology
|
Send RFQ |
Price on request
Price and Stock
on Request |
3.4 MHz | 25mA | - | POR | I²C | Yes | - | - | Surface Mount | - | 8 | -40°C ~ 125°C | - | Open Drain | - | 20-SSOP | - | - | 1.8V ~ 5.5V | |
Renesas
|
Send RFQ |
Price on request
Price and Stock
on Request |
- | 2.5mA | - | - | Parallel | No | - | - | Surface Mount | - | 24 | 0°C ~ 70°C | - | Open Drain | - | 44-PLCC (16.58x16.58) | - | - | 4.5V ~ 5.5V | |
Texas Instruments
|
Send RFQ |
Price on request
Price and Stock
on Request |
400 kHz | 10mA, 25mA | - | POR | I²C, SMBus | Yes | - | - | Surface Mount | - | 8 | -40°C ~ 85°C | - | Push-Pull | - | 16-TVSOP | - | - | 2.3V ~ 5.5V | |
Texas Instruments
|
Send RFQ |
Price on request
Price and Stock
on Request |
400 kHz | 10mA, 25mA | - | POR | I²C, SMBus | Yes | - | - | Surface Mount | - | 16 | -40°C ~ 85°C | - | Push-Pull | - | 24-TSSOP | - | - | 2.3V ~ 5.5V | |
|
Infineon Technologies
|
Send RFQ |
Price on request
Price and Stock
on Request |
100 kHz | 10mA, 25mA | - | EEPROM, POR, PWM, WDT | I²C | Yes | - | - | Surface Mount | - | 60 | -40°C ~ 85°C | - | Open Drain | - | 100-TQFP (14x14) | - | - | 3V ~ 5.25V | |
Renesas
|
Send RFQ |
Price on request
Price and Stock
on Request |
- | 2.5mA | - | - | Parallel | No | - | - | Surface Mount | - | 24 | 0°C ~ 70°C | - | Open Drain | - | 44-PLCC (16.58x16.58) | - | - | 4.5V ~ 5.5V | |
On Semiconductor
|
Send RFQ |
Price on request
Price and Stock
on Request |
100 kHz | 25mA | - | POR | I²C, SMBus | Yes | - | - | Surface Mount | - | 16 | -55°C ~ 125°C | - | Open Drain | - | 24-TSSOP | - | - | 1.65V ~ 5.5V | |
NXP Semiconductors
|
Send RFQ |
Price on request
Price and Stock
on Request |
5 MHz | - | - | - | SPI | Yes | - | - | Surface Mount | - | 8 (Input Only) | -40°C ~ 125°C | - | Open Drain | - | 16-TSSOP | - | - | 4.5V ~ 5.5V | |
|
Renesas
|
Send RFQ |
Price on request
Price and Stock
on Request |
100 kHz | - | - | - | I²C | No | - | - | Surface Mount | - | 8 | -20°C ~ 85°C | - | - | - | 16-SOP | - | - | 3V ~ 5.5V | |
Renesas
|
Send RFQ |
Price on request
Price and Stock
on Request |
- | 2.5mA | - | - | Parallel | No | - | - | Surface Mount | - | 24 | -40°C ~ 85°C | - | Open Drain | - | 44-PLCC (16.58x16.58) | - | - | 4.5V ~ 5.5V | |
On Semiconductor
|
Send RFQ |
Price on request
Price and Stock
on Request |
100 kHz | - | - | POR | I²C | Yes | - | - | Surface Mount | - | 8 | -55°C ~ 125°C | - | - | - | 16-SOIC | - | - | 1.65V ~ 5.5V | |
Analog Devices / Maxim Integrated
|
Send RFQ |
Price on request
Price and Stock
on Request |
400 kHz | - | - | Keypad Controller, POR | I²C | Yes | - | - | Surface Mount | - | 18 | -40°C ~ 85°C | - | Open Drain | - | 24-LFCSP-WQ (4x4) | - | - | 1.65V ~ 3.6V | |
Texas Instruments
|
Send RFQ |
Price on request
Price and Stock
on Request |
400 kHz | 10mA, 25mA | - | POR | I²C, SMBus | Yes | - | - | Surface Mount | - | 16 | -40°C ~ 85°C | - | Push-Pull | - | 24-TSSOP | - | - | 1.65V ~ 5.5V | |
Renesas
|
Send RFQ |
Price on request
Price and Stock
on Request |
- | 2.5mA | - | - | Parallel | No | - | - | Surface Mount | - | 24 | 0°C ~ 70°C | - | Open Drain | - | 44-MQFP (10x10) | - | - | 4.5V ~ 5.5V | |
Analog Devices / Maxim Integrated
|
Send RFQ |
Price on request
Price and Stock
on Request |
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 | |
Analog Devices / Maxim Integrated
|
Send RFQ |
Price on request
Price and Stock
on Request |
400 kHz | 20mA | - | POR | I²C | Yes | - | - | Surface Mount | - | 8 | -40°C ~ 125°C | - | Open Drain, Push-Pull | - | 16-TQFN (3x3) | - | - | 1.71V ~ 5.5V | |
Analog Devices / Maxim Integrated
|
Send RFQ |
Price on request
Price and Stock
on Request |
400 kHz | 4.5mA, 10mA | - | - | I²C | Yes | - | - | Surface Mount | - | 28 | -40°C ~ 125°C | - | Push-Pull | - | 40-TQFN (6x6) | - | - | 2.5V ~ 5.5V | |
Texas Instruments
|
Send RFQ |
Price on request
Price and Stock
on Request |
400 kHz | 10mA, 25mA | - | POR | I²C, SMBus | Yes | - | - | Surface Mount | - | 16 | -40°C ~ 85°C | - | Push-Pull | - | 24-TSSOP | - | - | 2.3V ~ 5.5V | |
NXP Semiconductors
|
Send RFQ |
Price on request
Price and Stock
on Request |
400 kHz | 10mA, 25mA | - | POR | I²C, SMBus | Yes | - | - | Surface Mount | - | 16 | -40°C ~ 85°C | - | Open Drain | - | 24-HWQFN (4x4) | - | - | 2.3V ~ 5.5V | |
Microchip Technology
|
Send RFQ |
Price on request
Price and Stock
on Request |
400 kHz | 25mA | - | POR | I²C | Yes | - | - | Through Hole | - | 16 | -40°C ~ 85°C | - | Push-Pull | - | 28-SPDIP | - | - | 2V ~ 5.5V | |
NXP Semiconductors
|
Send RFQ |
Price on request
Price and Stock
on Request |
5 MHz | - | - | - | SPI Serial | Yes | - | - | Surface Mount | - | 16 (Input Only) | - | - | Push-Pull | - | 24-TSSOP | - | - | 4.5V ~ 5.5V | |
NXP Semiconductors
|
Send RFQ |
Price on request
Price and Stock
on Request |
400 kHz | 10mA, 25mA | - | POR | I²C | Yes | - | - | Surface Mount | - | 16 | -40°C ~ 85°C | - | Open Drain, Push-Pull | - | 24-HWQFN (4x4) | - | - | 1.65V ~ 5.5V | |
On Semiconductor
|
Send RFQ |
Price on request
Price and Stock
on Request |
100 kHz | 42mA | - | POR | I²C, SMBus | Yes | - | - | Surface Mount | - | 16 | -55°C ~ 125°C | - | Push-Pull | - | 24-SOIC | - | - | 1.65V ~ 5.5V | |
|
Microchip Technology
|
Send RFQ |
Price on request
Price and Stock
on Request |
3.4 MHz | 25mA | - | POR | I²C | Yes | - | - | Surface Mount | - | 16 | -40°C ~ 125°C | - | Open Drain | - | 28-SOIC | - | - | 1.8V ~ 5.5V | |
Analog Devices / Maxim Integrated
|
Send RFQ |
Price on request
Price and Stock
on Request |
400 kHz | 31mA, 43mA | - | POR | I²C, SMBus | Yes | - | - | Surface Mount | - | 16 | -40°C ~ 125°C | - | Push-Pull | - | 24-SSOP | - | - | 2V ~ 5.5V | |
Microchip Technology
|
Send RFQ |
Price on request
Price and Stock
on Request |
10 MHz | 25mA | - | POR | SPI | Yes | - | - | Surface Mount | - | 8 | -40°C ~ 125°C | - | Push-Pull | - | 18-SOIC | - | - | 1.8V ~ 5.5V | |
NXP Semiconductors
|
Send RFQ
|
Price on request
Price and Stock
on Request |
5 MHz | - | - | - | SPI Serial | Yes | - | - | Surface Mount | - | 8 (Input Only) | -40°C ~ 125°C | - | Push-Pull | - | 16-TSSOP | - | - | 2.5V ~ 5.5V | |
Harris Semiconductor
|
Send RFQ |
Price on request
Price and Stock
on Request |
- | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | |
Diodes Incorporated
|
Send RFQ |
Price on request
Price and Stock
on Request |
400 kHz | - | - | POR | I²C | Yes | - | - | Surface Mount | - | 16 | -40°C ~ 105°C | - | Open Drain, Push-Pull | - | 24-TSSOP | - | - | 1.65V ~ 5.5V | |
Texas Instruments
|
Send RFQ |
Price on request
Price and Stock
on Request |
400 kHz | 10mA, 25mA | - | POR | I²C, SMBus | Yes | - | - | Surface Mount | - | 16 | -40°C ~ 85°C | - | Push-Pull | - | 24-SSOP | - | - | 1.65V ~ 5.5V | |
|
Microchip Technology
|
Send RFQ |
Price on request
Price and Stock
on Request |
400 kHz | 25mA | - | POR | I²C | Yes | - | - | Surface Mount | - | 16 | -40°C ~ 85°C | - | Push-Pull | - | 28-SOIC | - | - | 2V ~ 5.5V | |
NXP Semiconductors
|
Send RFQ |
Price on request
Price and Stock
on Request |
1 MHz | 100µA, 25mA | - | POR | I²C | Yes | - | - | Surface Mount | - | 16 | -40°C ~ 85°C | - | Push-Pull | - | 24-TSSOP | - | - | 2.3V ~ 5.5V | |
Infineon Technologies
|
Send RFQ |
Price on request
Price and Stock
on Request |
100 kHz | 10mA, 25mA | - | EEPROM, POR, PWM, WDT | I²C | Yes | - | - | Surface Mount | - | 40 | -40°C ~ 85°C | - | Open Drain | - | 48-SSOP | - | - | 3V ~ 5.25V |
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