| Image | Part Number | Manufacturer | Description | Series | Operating Temperature | Features | Packaging | Mounting Type | RoHS Status | Manufacturer Part Number | Voltage - Supply | Output Type |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PCA9674D,518 | NXP Semiconductors / Freescale | IC I/O EXPANDER I2C 8B 16SOIC | - | -40°C ~ 85°C | POR | Tape & Reel (TR) | Surface Mount | - | - | 2.3 V ~ 5.5 V | Push-Pull | |
| TCA9554DWR | N/A | IC I/O EXPANDER I2C 8BIT 16-SOIC | - | -40°C ~ 85°C | POR | - | - | - | - | 1.65 V ~ 5.5 V | Push-Pull | |
| PCA9536DG4 | N/A | IC I/O EXPANDER I2C 4B 8SOIC | - | -40°C ~ 85°C | POR | Tube | Surface Mount | - | - | 2.3 V ~ 5.5 V | Push-Pull | |
| PCA9534APWR | N/A | IC I/O EXPANDER I2C 8B 16TSSOP | - | -40°C ~ 85°C | POR | Cut Tape (CT) | Surface Mount | - | - | 2.3 V ~ 5.5 V | Push-Pull | |
| PCA9554DB,112 | NXP Semiconductors / Freescale | IC I/O EXPANDER I2C 8B 16SSOP | - | -40°C ~ 85°C | POR | Tube | Surface Mount | - | - | 2.3 V ~ 5.5 V | Push-Pull | |
| MCP23017-E/SP | Micrel / Microchip Technology | IC I/O EXPANDER I2C 16B 28SDIP | - | -40°C ~ 125°C | POR | Tube | Through Hole | - | - | 1.8 V ~ 5.5 V | Push-Pull | |
| PI4IOE5V9554LEX | Diodes Incorporated | IC I/O EXPANDER 8-BIT 16TSSOP | - | -40°C ~ 85°C | - | Tape & Reel (TR) | Surface Mount | - | - | 2.3 V ~ 5.5 V | - | |
| MCP23S17T-E/SS | Micrel / Microchip Technology | IC I/O EXPANDER SPI 16B 28SSOP | - | -40°C ~ 125°C | - | Original-Reel® | Surface Mount | - | - | 1.8 V ~ 5.5 V | Push-Pull | |
| PCAL6416AEVJ | NXP Semiconductors / Freescale | IC I/O EXPANDER 16BIT 24VFBGA | Agile | -40°C ~ 85°C | POR | Tape & Reel (TR) | Surface Mount | - | - | 1.65 V ~ 5.5 V | Open Drain, Push-Pull | |
| PCA9703PW,118 | NXP Semiconductors / Freescale | IC SHIFT REG SPI GPI 24TSSOP | - | - | - | Tape & Reel (TR) | 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.