| Image | Part Number | Manufacturer | Description | Series | Operating Temperature | Features | Packaging | Mounting Type | RoHS Status | Manufacturer Part Number | Voltage - Supply | Output Type |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| TCA9534PWR | N/A | IC I/O EXPANDER I2C 8B 16TSSOP | - | -40°C ~ 85°C | - | Tape & Reel (TR) | Surface Mount | - | - | 1.65 V ~ 5.5 V | Push-Pull | |
| BU1850MUV-E2 | LAPIS Semiconductor | IC I/O EXPANDER IAC 8B 16VQFN | - | -30°C ~ 85°C | POR | Tape & Reel (TR) | Surface Mount | - | - | 1.65 V ~ 3.6 V | Open Drain | |
| PCA9539RPW/Q900J | NXP Semiconductors / Freescale | 16-BIT I2C-BUS AND SMBUS LOW POW | Automotive, AEC-Q100 | -40°C ~ 105°C | POR | Tape & Reel (TR) | Surface Mount | - | - | 2.3 V ~ 5.5 V | Push-Pull | |
| PCA9675D,118 | NXP Semiconductors / Freescale | IC I/O EXPANDER I2C 16B 24SOIC | - | -40°C ~ 85°C | POR | Tape & Reel (TR) | Surface Mount | - | - | 2.3 V ~ 5.5 V | Push-Pull | |
| PCA9534BS3,118 | NXP Semiconductors / Freescale | IC I/O EXPANDER I2C 8B 16HVQFN | - | -40°C ~ 85°C | POR | Cut Tape (CT) | Surface Mount | - | - | 2.3 V ~ 5.5 V | Push-Pull | |
| STMPE2401TBR | STMicroelectronics | IC I/O EXPANDER I2C 24B 36TFBGA | Xpander Logic™ | -40°C ~ 85°C | Keypad Controller, POR, PWM | Original-Reel® | Surface Mount | - | - | 1.65 V ~ 1.95 V | Push-Pull | |
| PCF8575PWG4 | N/A | IC I/O EXPANDER I2C 16B 24TSSOP | - | -40°C ~ 85°C | POR | Tube | Surface Mount | - | - | 2.5 V ~ 5.5 V | Push-Pull | |
| PI4IOE5V9557LE | Diodes Incorporated | IC I/O EXPANDER 8BIT I2C 16TSSOP | - | -40°C ~ 85°C | - | - | - | - | - | 2.3 V ~ 5.5 V | - | |
| PCA9557D/DG,118 | NXP Semiconductors / Freescale | IC I/O PORT I2C/SMBUS 16-SOIC | - | -40°C ~ 85°C | POR | Tape & Reel (TR) | Surface Mount | - | - | 2.3 V ~ 5.5 V | Open Drain, Push-Pull | |
| PCA9703PW,112 | NXP Semiconductors / Freescale | IC SPI GPI 16-BIT 24TSSOP | - | - | - | Tube | Surface Mount | - | - | 4.5 V ~ 5.5 V | Push-Pull |
I/O expanders are integrated circuits or modules used to increase the number of input and output (I/O) pins available to a microcontroller or other digital device. They typically use serial communication interfaces such as I2C or SPI to communicate with the host controller and provide additional GPIO (General Purpose Input/Output) pins for connecting sensors, actuators, and other peripherals. I/O expanders are commonly used in embedded systems, IoT (Internet of Things) devices, and industrial automation applications where the number of available I/O pins on the microcontroller is limited.