| Image | Part Number | Manufacturer | Description | Series | Operating Temperature | Features | Packaging | Mounting Type | RoHS Status | Manufacturer Part Number | Voltage - Supply | Output Type |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PCF8574ADW | N/A | IC I/O EXPANDER I2C 8B 16SOIC | - | -40°C ~ 85°C | POR | Tube | Surface Mount | - | - | 2.5 V ~ 6 V | Push-Pull | |
| PCA9698DGG,518 | NXP Semiconductors / Freescale | IC I/O EXPANDER I2C 40B 56TSSOP | - | -40°C ~ 85°C | POR | Tape & Reel (TR) | Surface Mount | - | - | 2.3 V ~ 5.5 V | Open Drain | |
| PCA8574D,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 | |
| MCP23017-E/SO | Micrel / Microchip Technology | IC I/O EXPANDER I2C 16B 28SOIC | - | -40°C ~ 125°C | POR | Tube | Surface Mount | - | - | 1.8 V ~ 5.5 V | Push-Pull | |
| PCA6107DWR | N/A | IC I/O EXPANDER I2C 8B 18SOIC | - | -40°C ~ 85°C | POR | Cut Tape (CT) | Surface Mount | - | - | 2.3 V ~ 5.5 V | Open Drain, Push-Pull | |
| SX1508BIULTRT | Semtech | IC EXPANDER 8 CHAN 20QFN | - | -40°C ~ 85°C | POR | Cut Tape (CT) | Surface Mount | - | - | 1.2 V ~ 3.6 V | Open Drain, Push-Pull | |
| PCA9535EDWR2G | AMI Semiconductor / ON Semiconductor | IC I/O Expander 16B 24SOIC | - | -55°C ~ 125°C | POR | Tape & Reel (TR) | Surface Mount | - | - | 1.65 V ~ 5.5 V | Push-Pull | |
| MAX7315AUE+ | Maxim Integrated | IC I/O EXPANDER I2C 8B 16TSSOP | - | -40°C ~ 125°C | PWM | Tube | Surface Mount | - | - | 2 V ~ 3.6 V | Open Drain | |
| PCF8575CDW | N/A | IC I/O EXPANDER I2C 16B 24SOIC | - | -40°C ~ 85°C | POR | Tube | Surface Mount | - | - | 4.5 V ~ 5.5 V | Open Drain | |
| CAT9534YI-GT2 | AMI Semiconductor / ON Semiconductor | IC I/O EXPANDER I2C 8B 16TSSOP | - | -40°C ~ 85°C | POR | Original-Reel® | Surface Mount | - | - | 2.3 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.