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.
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| Part & Mfr | AEC Qualified | Automotive Grade | Clock Frequency | Current | ESD Protection | Features | Industrial Grade | Interface | Interrupt Output | Latch-up Performance | Lead Spacing | Lead Style | Medical Grade | Military Grade | Mounting Type | Number of I | Number of I/O | Operating Temperature | Operating Voltage | Output Current | Output Type | SVHC Present | Storage Temperature | Supplier Device Package | Supplier Package | Supply Current | Supply Voltage | Tape & Reel | Voltage | Voltage Supply | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
NXP Semiconductors
|
250
|
$1.15
|
No | No | 400 kHz | 10mA | - | POR | No | I²C, SMBus | Yes | - | 3.0 mm | - | No | No | Surface Mount | 4 | - | -40°C | - | - | Push-Pull | - | - | 10-TSSOP | 10-TSSOP | - | - | Tape & Reel | 2.3V | - | |
Texas Instruments
|
239
|
$0.86
|
- | - | 400 kHz | 10mA / 25mA | Exceeds JESD 22 | POR | - | I2C, SMBus | No | Exceeds 100mA per JESD 78, class II | 3.9 mm | - | - | - | Surface Mount | 8 | - | -40°C / 85°C | - | - | Open Drain, Push-Pull | - | - | 16-SOIC | 16-SOIC | - | - | - | 2.3V / 5.5V | - | |
Texas Instruments
|
222
|
$0.52
|
- | - | 400 kHz | - | Exceeds JESD 22 2000-V Human-Body Model (A114-A), 1000-V Charged-Device Model (C101) | POR | - | I2C | Yes | Exceeds 100 mA Per JESD 78, Class II | - | - | - | - | Surface Mount | 8-bit | - | -40°C ~ 85°C | - | - | Push-Pull | - | - | 16-SOIC | - | - | - | 2000 | 1.65 V to 5.5 V | - | |
On Semiconductor
|
200
|
$1.15
|
- | - | 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
|
$1.47
|
- | - | 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
|
- | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | |
Analog Devices / Maxim Integrated
|
192
|
$1.15
|
- | - | 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
|
$1.11
|
- | - | 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
|
$1.15
|
- | - | 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
|
$1.15
|
- | - | 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
|
$1.15
|
- | - | 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
|
$1.15
|
- | - | 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
|
$1.15
|
No | No | - | - | - | - | No | - | - | - | - | - | No | No | - | - | - | - | - | - | - | - | °C ~ °C | - | - | - | - | No | - | - | |
NXP Semiconductors
|
105
|
$1.15
|
- | - | 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
|
$1.15
|
- | - | 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
|
- | - | 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
|
$1.15
|
- | - | 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
|
$1.15
|
- | - | 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
|
$1.15
|
- | - | 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
|
- | - | - | 2.5mA | - | - | - | Parallel | No | - | - | - | - | - | Surface Mount | 24 | - | 0°C ~ 70°C | - | - | Open Drain | Not Present | - | 44-PLCC (16.58x16.58) | 44-PLCC (16.58x16.58) | - | - | - | 4.5V ~ 5.5V | - | |
|
NXP Semiconductors
|
64
|
$1.15
|
- | - | 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
|
$1.15
|
- | - | 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
|
$1.15
|
No | No | 10 MHz | 25 mA | - | - | No | SPI | Yes | - | 7.62 mm | - | No | No | Through Hole | 8 | - | -40°C ~ 125°C | - | - | Open Drain | - | - | 18-PDIP | 18-PDIP | - | - | No | 1.8V ~ 5.5V | - | |
Analog Devices / Maxim Integrated
|
48
|
$1.15
|
- | - | 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
|
$0.54
|
- | - | 400 kHz | 10mA | - | POR | - | I2C, SMBus | No | - | - | - | - | - | Surface Mount | 4 | - | -40°C | - | - | Push-Pull | - | - | 8-SOIC | - | - | - | 2500 | 2.3V | - | |
Microchip Technology
|
40
|
$1.15
|
- | - | 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
|
$1.15
|
- | - | 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
|
$1.15
|
No | No | 3.4 MHz | 25mA | - | POR | No | I²C | Yes | - | 7.62 mm | - | No | No | Through Hole | 8 | 8 | -40°C ~ 125°C | - | - | Open Drain | - | - | 18-PDIP | - | - | - | No | 1.8V ~ 5.5V | 1.8V ~ 5.5V | |
NXP Semiconductors
|
38
|
$1.15
|
- | - | 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
|
$1.15
|
- | - | 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
|
- | - | 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
|
$1.15
|
- | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | |
Microchip Technology
|
25
|
$1.15
|
- | - | 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 | - | |
Diodes Incorporated
|
22
|
Price on request
|
- | - | 400 kHz | 10mA, 25mA | - | POR | - | I²C | Yes | - | - | - | - | - | Surface Mount | 16 | - | -40°C ~ 85°C | - | - | Open Drain, Push-Pull | - | - | 24-TSSOP | - | - | - | - | 1.65V ~ 5.5V | - | |
|
Analog Devices / Maxim Integrated
|
20
|
$1.15
|
- | - | 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
|
$1.15
|
- | - | 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
|
$1.15
|
No | No | 400 kHz | 10 mA, 25 mA | - | POR | No | I²C, SMBus | Open-drain active LOW | - | - | - | No | No | 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
|
$1.15
|
- | - | 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
|
$1.15
|
No | No | 10 MHz | 25mA | - | POR | No | SPI | Yes | - | - | - | No | No | Through Hole | 8 | - | -40°C ~ 125°C | - | - | Push-Pull | - | - | 18-PDIP | 18-PDIP | - | - | No | 1.8V ~ 5.5V | - | |
|
Texas Instruments
|
12
|
$0.58
|
- | - | 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
|
$1.15
|
- | - | 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
|
$1.15
|
- | - | 400kHz | 20mA | - | POR | - | I2C | Yes | - | - | - | - | - | Surface Mount | 8 | - | -40°C | - | - | Open Drain, Push-Pull | - | - | 16-QSOP | 16-QSOP | - | - | - | 1.71V | - | |
Texas Instruments
|
10
|
$1.68
|
- | - | 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
|
$1.15
|
- | - | 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
|
- | - | - | - | - | - | - | - | Yes | - | - | - | - | - | Through Hole | 24 | - | 0°C ~ 70°C | - | - | - | - | - | 40-PDIP | - | - | - | - | 4.5V ~ 5.5V | - | |
|
Diodes Incorporated
|
9
|
$1.15
|
- | - | 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
|
$1.15
|
- | - | 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 | - | |
Analog Devices / Maxim Integrated
|
6
|
$1.15
|
- | - | 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 | - | |
Intersil
|
6
|
Price on request
|
- | - | - | 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 | - | |
|
NXP Semiconductors
|
5
|
$1.15
|
- | - | 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 | - |
Showing 351-400 of 1,100 products