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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
On Semiconductor
|
200
|
Price on request
200
|
- | - | 400 kHz | 10mA, 24mA | - | - | POR | - | - | - | I2C, SMBus | Yes | - | 4.4 mm | - | Surface Mount | - | 8 | - | -40°C ~ 85°C | - | - | - | Push-Pull | - | - | - | - | - | 16-TSSOP | 16-TSSOP | - | - | Yes | 2.3V ~ 5.5V | - | |
Texas Instruments
|
195
|
Price on request
195
|
- | - | 400 kHz | 10mA, 25mA | - | - | POR | - | - | - | I²C, SMBus | Yes | - | - | - | Surface Mount | - | 16 | - | -40°C ~ 85°C | - | - | - | Push-Pull | - | - | - | - | - | 24-TVSOP | - | - | - | - | 2.3V ~ 5.5V | - | |
Intersil
|
195
|
Price on request
195
|
- | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | |
Analog Devices / Maxim Integrated
|
192
|
Price on request
192
|
- | - | 26 MHz | 4.5mA, 10mA | - | - | - | - | - | - | SPI | Yes | - | 7.62 mm | - | Through Hole | - | 28 | - | -40°C ~ 125°C | - | - | - | Push-Pull | - | - | - | - | - | 28-PDIP | - | - | - | - | 2.5V ~ 5.5V | - | |
Texas Instruments
|
188
|
Price on request
188
|
- | - | 400 kHz | 10mA, 25mA | - | - | POR | - | - | - | I2C, SMBus | Yes | - | - | - | Surface Mount | - | 16 | - | -40°C ~ 85°C | - | - | - | Push-Pull | - | - | - | - | - | 24-TSSOP | - | - | - | - | 2.3V ~ 5.5V | - | |
Texas Instruments
|
160
|
Price on request
160
|
- | - | 10 MHz | 10mA, 25mA | - | 4 kV | POR | - | - | - | I²C, SMBus | Yes | - | 4.4 mm | - | Surface Mount | - | 16 | 8 | -40°C ~ 125°C | - | 1.8 V ~ 5.5 V | - | Push-Pull | - | - | - | - | - | 24-TSSOP | - | - | - | No | 2.3V ~ 5.5V | - | |
Analog Devices / Maxim Integrated
|
155
|
Price on request
155
|
- | - | 400 kHz | 4.5 mA, 10 mA | - | - | - | - | - | - | I²C, 2-Wire Serial | Yes | - | 5 mm | - | Surface Mount | - | 28 | - | -40°C ~ 125°C | - | - | - | Open Drain, Push-Pull | - | - | - | - | - | 28-TQFN (5x5) | - | - | - | - | 2.5 V ~ 5.5 V | - | |
Analog Devices / Maxim Integrated
|
130
|
Price on request
130
|
- | - | 400 kHz | 4.5 mA, 10 mA | - | - | - | - | - | - | I²C, 2-Wire Serial | Yes | - | 5 mm | - | Surface Mount | - | 20 | - | -40°C to 125°C | - | - | - | Push-Pull | - | - | - | - | - | 28-TQFN (5x5) | - | - | - | - | 2.5 V to 5.5 V | - | |
Analog Devices / Maxim Integrated
|
130
|
Price on request
130
|
- | - | 400kHz | 20mA | - | - | POR | - | - | - | I2C | Yes | - | 3 mm | - | Surface Mount | - | 4 | - | -40°C to +125°C | - | - | - | Open Drain, Push-Pull | - | - | - | - | - | 16-TQFN (3x3) | - | - | - | - | 1.71V to 5.5V | - | |
NXP Semiconductors
|
107
|
Price on request
107
|
No | - | - | - | - | - | - | - | No | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | °C ~ °C | - | - | - | - | No | - | - | |
NXP Semiconductors
|
105
|
Price on request
105
|
- | - | 100 kHz | 300µA, 25mA | - | - | POR | - | - | - | I²C | Yes | - | 7.5 mm | Through Hole | Surface Mount | - | 8 | - | -40°C ~ 85°C | - | - | - | Push-Pull | - | - | - | - | - | 16-SO | 16-SO | - | - | - | 2.5 V ~ 6 V | - | |
Analog Devices / Maxim Integrated
|
93
|
Price on request
93
|
- | - | 400kHz | 25mA | - | - | POR | - | - | - | I²C | No | - | - | - | Surface Mount | - | 8 | 8 | -40°C | - | 1.71V | 25mA | Open Drain, Push-Pull | - | - | - | - | - | 16-TQFN (3x3) | - | - | - | - | 1.71V ~ 5.5V | - | |
Analog Devices / Maxim Integrated
|
91
|
Price on request
91
|
- | - | 400 kHz | 12mA | - | - | EEPROM, POR | - | - | - | I2C | No | - | - | Through Hole | Surface Mount | - | 9 | - | -40°C / 85°C | - | - | - | Open Drain | - | - | - | - | - | 16-TSSOP | - | - | - | - | 2.7V / 5.5V | - | |
NXP Semiconductors
|
84
|
Price on request
84
|
- | - | 400 kHz | 10mA, 25mA | - | - | POR | - | - | - | I²C, SMBus | Yes | - | 3 mm | - | Surface Mount | - | 16 | - | -40°C / 85°C | - | - | - | Open Drain, Push-Pull | - | - | - | - | - | 24-VFBGA (3x3) | 24-VFBGA (3x3) | - | - | - | 1.65 V to 5.5 V | - | |
NXP Semiconductors
|
73
|
Price on request
73
|
- | - | 400 kHz | 10mA, 25mA | - | - | POR | - | - | - | I2C, SMBus | Yes | - | - | - | Surface Mount | - | 16 | - | -40°C | - | 1.65 V to 5.5 V | 25 mA | Open Drain, Push-Pull | - | - | - | - | - | 24-TSSOP | - | - | - | - | 1.65V ~ 5.5V | - | |
NXP Semiconductors
|
71
|
Price on request
71
|
- | - | 400 kHz | 10mA, 25mA | - | - | POR | - | - | - | I²C, SMBus | No | - | - | - | Surface Mount | - | 8 | - | -40°C ~ 85°C | - | - | - | Open Drain, Push-Pull | - | - | - | - | - | 16-TSSOP | - | - | - | - | 2.3 V to 5.5 V | - | |
Renesas
|
71
|
Price on request
71
|
- | - | - | 2.5mA | - | - | - | - | - | - | Parallel | No | - | - | - | Surface Mount | - | 24 | - | 0°C ~ 70°C | - | - | - | Open Drain | - | - | - | - | - | 44-PLCC (16.58x16.58) | 44-PLCC (16.58x16.58) | - | - | - | 4.5V ~ 5.5V | - | |
NXP Semiconductors
|
64
|
Price on request
64
|
- | - | 400 kHz | 100µA, 25mA | - | - | POR | - | - | - | I2C | Yes | - | - | - | SMD/SMT | - | 8 | - | -40°C ~ 85°C | - | - | 25 mA | Open Drain | - | - | - | - | - | 16-SO | - | - | - | - | 2.3V ~ 5.5V | - | |
Analog Devices / Maxim Integrated
|
60
|
Price on request
60
|
- | - | 400 kHz | 50mA | - | - | PWM | - | - | - | I2C, SMBus | Yes | - | - | - | Surface Mount | - | 8 | - | -40°C ~ 125°C | - | - | - | Open Drain | - | - | - | - | - | 16-QSOP | 16-QSOP | - | - | - | 2V ~ 3.6V | - | |
Microchip Technology
|
50
|
Price on request
50
|
No | - | 10 MHz | 25 mA | - | - | - | - | No | - | SPI | Yes | - | 7.62 mm | - | Through Hole | - | 8 | - | -40°C ~ 125°C | - | - | - | Open Drain | - | - | - | - | - | 18-PDIP | 18-PDIP | - | - | No | 1.8V ~ 5.5V | - | |
Analog Devices / Maxim Integrated
|
48
|
Price on request
48
|
- | - | 400kHz | 31mA / 43mA | - | - | POR; Supports Hot Insertion; Bus Timeout for Lock-Up-Free Operation; Noise Filter on SCL/SDA Inputs; Polarity Inversion; 64 User-Selectable Slave ID Addresses | - | - | - | I2C, SMBus | Yes | - | 4 mm | - | Surface Mount | - | 16 | - | -40°C / 125°C | - | - | - | Push-Pull | - | - | - | - | - | 24-TQFN (4x4) | - | - | - | - | 2V ~ 5.5V | - | |
Texas Instruments
|
43
|
Price on request
43
|
- | - | 400 kHz | 10mA | - | - | POR | - | - | - | I2C, SMBus | No | - | - | - | Surface Mount | - | 4 | - | -40°C | - | - | - | Push-Pull | - | - | - | - | - | 8-SOIC | - | - | - | 2500 | 2.3V | - | |
Microchip Technology
|
40
|
Price on request
40
|
- | - | 3.4 MHz | 25mA | - | - | POR | - | - | - | I²C | Yes | - | - | Through Hole | Surface Mount | - | 8 | - | -40°C ~ 125°C | - | - | - | Open Drain | - | - | - | - | - | 18-SOIC | - | - | - | - | 1.8V ~ 5.5V | - | |
Texas Instruments
|
40
|
Price on request
40
|
- | - | 400 kHz | - | - | - | - | - | - | - | I²C | Yes | - | - | Surface Mount | Surface Mount | - | 8 | - | -40°C ~ 85°C | - | - | - | Push-Pull | - | - | - | - | - | 16-SSOP | 16-SSOP | - | - | - | 1.65V ~ 5.5V | - | |
Microchip Technology
|
40
|
Price on request
40
|
No | - | 3.4 MHz | 25mA | - | - | POR | - | No | - | I²C | Yes | - | 7.62 mm | - | Through Hole | - | 8 | 8 | -40°C ~ 125°C | - | - | - | Open Drain | - | - | - | - | - | 18-PDIP | - | - | - | No | 1.8V ~ 5.5V | 1.8V ~ 5.5V | |
NXP Semiconductors
|
38
|
Price on request
38
|
- | - | 400 kHz | 10 mA, 25 mA | - | - | POR | - | - | - | I²C, SMBus | Yes | - | - | - | Surface Mount | - | 8 | - | -40°C to 85°C | - | - | - | Push-Pull | - | - | - | - | - | 16-HVQFN (3x3) | - | - | - | - | 1.65 V to 5.5 V | - | |
NXP Semiconductors
|
34
|
Price on request
34
|
- | - | 400 kHz | 10mA, 25mA | - | - | POR | - | - | - | I²C, SMBus | Yes | - | - | - | Surface Mount | - | 16 | - | -40°C | - | - | - | Push-Pull | - | - | - | - | - | 24-HVQFN (4x4) | - | - | - | - | 2.3 V to 5.5 V | - | |
Analog Devices / Maxim Integrated
|
32
|
Price on request
32
|
- | - | 400 kHz | 16mA | - | - | EEPROM, POR | - | - | - | I²C, JTAG | No | - | 4.4 mm | - | Surface Mount | - | 9 | - | -40°C ~ 85°C | - | - | - | Open Drain | - | - | - | - | - | 20-TSSOP | 20-TSSOP | - | 2.7V to 5.5V | - | 2.7V ~ 5.5V | - | |
Rochester Electronics
|
25
|
Price on request
25
|
- | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | |
Microchip Technology
|
25
|
Price on request
25
|
- | - | 10 MHz | 25 mA | - | - | - | - | - | - | SPI | Yes | - | 7.62 mm | - | Through Hole | - | 16 | - | -40°C ~ 125°C | - | - | - | Open Drain | - | - | - | - | - | 28-SPDIP | 28-SPDIP | - | - | No | 1.8V to 5.5V | - | |
Analog Devices / Maxim Integrated
|
20
|
Price on request
20
|
- | - | 100 kHz | - | - | - | POR | - | - | - | SMBus | No | - | - | - | Surface Mount | - | 8 | 8 | -40°C to +85°C | - | - | - | Open Drain | - | - | - | - | - | 16-QSOP | 16-QSOP | 2.5µA | 2.7V to 5.5V | - | 2.7V ~ 5.5V | - | |
NXP Semiconductors
|
17
|
Price on request
17
|
- | - | 0 Hz to 400 kHz | 10mA, 25mA | - | - | POR | - | - | - | I²C, SMBus | Yes | - | - | Through Hole | Surface Mount | - | 8 | - | -40°C ~ 85°C | - | - | - | Push-Pull | - | - | - | - | - | 16-TSSOP | 16-TSSOP | - | - | - | 2.3V ~ 5.5V | - | |
NXP Semiconductors
|
15
|
Price on request
15
|
No | - | 400 kHz | 10 mA, 25 mA | - | - | POR | - | No | - | I²C, SMBus | Open-drain active LOW | - | - | - | Surface Mount | - | 16 | - | -40°C to 85°C | - | - | - | Push-Pull | - | - | - | - | - | 24-TSSOP | 24-TSSOP | - | - | No | 1.65 V to 5.5 V | - | |
NXP Semiconductors
|
13
|
Price on request
13
|
- | - | 400 kHz | 10mA, 25mA | - | - | POR | - | - | - | I²C, SMBus | Yes | - | - | - | Surface Mount | - | 16 | 16 | -40°C ~ 85°C | - | - | - | Push-Pull | - | - | - | - | - | 24-TSSOP | - | - | - | - | 2.3V ~ 5.5V | - | |
Microchip Technology
|
12
|
Price on request
12
|
No | - | 10 MHz | 25mA | - | - | POR | - | No | - | SPI | Yes | - | - | - | Through Hole | - | 8 | - | -40°C ~ 125°C | - | - | - | Push-Pull | - | - | - | - | - | 18-PDIP | 18-PDIP | - | - | No | 1.8V ~ 5.5V | - | |
Texas Instruments
|
12
|
Price on request
12
|
- | - | 400 kHz | 10mA, 25mA | - | Exceeds JESD 22 | POR | - | - | - | I²C, SMBus | Yes | Exceeds 100 mA Per JESD 78, Class II | 7.5 mm | - | Surface Mount | - | 8 | - | -40°C ~ 85°C | - | 2.3 V to 5.5 V | - | Push-Pull | - | - | - | - | - | 16-SOIC | 16-SOIC | - | - | - | 2.3V ~ 5.5V | - | |
Diodes Incorporated
|
11
|
Price on request
11
|
- | - | 400 kHz | - | - | - | - | - | - | - | I²C | Yes | - | - | - | Surface Mount | - | 16 | - | -40°C | - | 2.3V | - | - | - | - | - | - | - | 24-TQFN (4x4) | 24-TQFN (4x4) | - | - | No | 2.3V ~ 5.5V | - | |
Analog Devices / Maxim Integrated
|
10
|
Price on request
10
|
- | - | 400kHz | 20mA | - | - | POR | - | - | - | I2C | Yes | - | - | - | Surface Mount | - | 8 | - | -40°C | - | - | - | Open Drain, Push-Pull | - | - | - | - | - | 16-QSOP | 16-QSOP | - | - | - | 1.71V | - | |
Texas Instruments
|
10
|
Price on request
10
|
- | - | 0.1 MHz | 1 mA | - | - | POR; Interrupt pin | - | - | - | I²C | Yes | - | 7.62 mm | - | Through Hole | - | 8 | - | -40°C | - | - | - | Push-Pull | - | - | - | - | - | 16-PDIP | 16-PDIP | - | - | - | 2.5 V | - | |
NXP Semiconductors
|
9
|
Price on request
9
|
- | - | 400 kHz | 10mA, 25mA | - | - | POR | - | - | - | I²C, SMBus | Yes | - | - | - | Surface Mount | - | 16 | - | -40°C ~ 85°C | - | - | - | Open Drain | - | - | - | - | - | 24-TSSOP | - | - | - | - | 2.3V to 5.5V | - | |
Harris Semiconductor
|
9
|
Price on request
9
|
- | - | - | - | - | - | - | - | - | - | - | Yes | - | - | - | Through Hole | - | 24 | - | 0°C ~ 70°C | - | - | - | - | - | - | - | - | - | 40-PDIP | - | - | - | - | 4.5V ~ 5.5V | - | |
Diodes Incorporated
|
9
|
Price on request
9
|
- | - | 400 kHz | - | - | 4KV HBM and 1KV CDM | - | - | - | - | I²C | Yes | - | - | - | Surface Mount | - | 16 | - | -40°C ~ 85°C | - | - | - | - | - | - | - | - | - | 24-TSSOP | - | - | - | - | 2.3V to 5.5V | - | |
Microchip Technology
|
8
|
Price on request
8
|
- | - | 3.4 MHz | 25mA | - | - | POR | - | - | - | I²C | Yes | - | - | - | Surface Mount | - | 8 | - | -40°C to 125°C | - | - | - | Open Drain | - | - | - | - | - | 16-QFN (3x3) | - | - | - | No | 1.8V to 5.5V | - | |
Intersil
|
6
|
Price on request
6
|
- | - | - | 2.5mA | - | - | - | - | - | - | Parallel | No | - | 16.58 mm | - | Surface Mount | - | 24 | - | -40°C ~ 85°C | - | - | - | Open Drain | - | - | - | - | - | 44-PLCC (16.58x16.58) | - | - | - | - | 4.5V ~ 5.5V | - | |
Analog Devices / Maxim Integrated
|
6
|
Price on request
6
|
- | - | 26 MHz | 4.5mA / 10mA | - | - | - | - | - | - | SPI | Yes | - | 0.209 mm | - | Surface Mount | - | 20 | - | -40°C to +125°C | - | - | - | Push-Pull | - | - | - | - | - | 28-SSOP | - | - | - | - | 2.5V to 5.5V | - | |
NXP Semiconductors
|
5
|
Price on request
5
|
- | - | 400 kHz | 100µA, 25mA | - | - | EEPROM, POR | - | - | - | I2C, SMBus | No | - | 4.40 mm | - | Surface Mount | - | 8 | - | -40°C to 85°C | - | - | - | Push-Pull | - | - | - | - | - | 16-TSSOP | - | 2.5 µA | - | No | 2.5 V to 3.6 V | - | |
NXP Semiconductors
|
5
|
Price on request
5
|
- | - | 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 | - | |
NXP Semiconductors
|
5
|
Price on request
5
|
- | - | 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 | - | |
Texas Instruments
|
5
|
Price on request
5
|
- | - | 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
|
Price on request
5
|
- | - | 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 | - |
Showing 351-400 of 1,100 products