| Image | Part Number | Manufacturer | Description | Series | Operating Temperature | Features | Packaging | Mounting Type | RoHS Status | Manufacturer Part Number | Voltage - Supply | Output Type |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| MCP23009-E/P | Micrel / Microchip Technology | IC I/O EXPANDER I2C 8B 18DIP | - | -40°C ~ 125°C | POR | Tube | Through Hole | - | - | 1.8 V ~ 5.5 V | Open Drain | |
| PCA9539PWRG4 | N/A | IC I/O EXPANDER I2C 16B 24TSSOP | - | -40°C ~ 85°C | POR | Tape & Reel (TR) | Surface Mount | - | - | 2.3 V ~ 5.5 V | Push-Pull | |
| PCA9671PW,112 | NXP Semiconductors / Freescale | IC I/O EXPANDER I2C 16B 24TSSOP | - | -40°C ~ 85°C | POR | Tube | Surface Mount | - | - | 2.3 V ~ 5.5 V | Push-Pull | |
| TCA9535DBR | N/A | IC I/O EXPANDER 16B 24SSOP | - | -40°C ~ 85°C | POR | Tape & Reel (TR) | Surface Mount | - | - | 1.65 V ~ 5.5 V | Push-Pull | |
| MAX7319AEE+T | Maxim Integrated | IC I/O EXPANDER I2C 8B 16QSOP | - | -40°C ~ 125°C | POR | Tape & Reel (TR) | Surface Mount | - | - | 1.71 V ~ 5.5 V | - | |
| PI4IOE5V9535LEX | Diodes Incorporated | IC I/O EXPANDER 16BIT 24TSSOP | - | -40°C ~ 85°C | - | Cut Tape (CT) | Surface Mount | - | - | 2.3 V ~ 5.5 V | - | |
| XRA1200IG16-F | Exar Corporation | IC I/O PORT EXPANDER I2C 16TSSOP | - | -40°C ~ 85°C | - | Tube | Surface Mount | - | - | 1.65 V ~ 3.6 V | Open Drain | |
| PCA9557DB | N/A | IC I/O EXPANDER I2C 8B 16SSOP | - | -40°C ~ 85°C | POR | Tube | Surface Mount | - | - | 2.3 V ~ 5.5 V | Open Drain, Push-Pull | |
| MAX7312AUG+ | Maxim Integrated | IC I/O EXPANDER I2C 16B 24TSSOP | - | -40°C ~ 125°C | POR | Tube | Surface Mount | - | - | 2 V ~ 5.5 V | Push-Pull | |
| PCA9655EDTR2G | AMI Semiconductor / ON Semiconductor | IC I/O EXPANDER I2C 16B 24-TSSOP | - | -55°C ~ 125°C | POR | Tape & Reel (TR) | Surface Mount | - | - | 1.65 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.