| Image | Part Number | Manufacturer | Description | Series | Operating Temperature | Features | Packaging | Mounting Type | RoHS Status | Manufacturer Part Number | Voltage - Supply | Output Type |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| CQ82C55A | Intersil | IC I/O EXPANDER 24B 44MQFP | - | 0°C ~ 70°C | - | Tube | Surface Mount | - | - | 4.5 V ~ 5.5 V | Open Drain | |
| PM8043B-F3GI | Microsemi | PM8043: SXP 24X12G | - | - | - | - | - | RoHS Compliant | - | - | - | |
| XRA1200PIL16MTR-F | Exar Corporation | IC I/O PORT EXPANDER 8 BIT I2C G | - | -40°C ~ 85°C | - | - | - | - | - | 1.65 V ~ 3.6 V | Open Drain | |
| MCP23S08T-E/ML | Micrel / Microchip Technology | IC I/O EXPANDER SPI 8B 20QFN | - | -40°C ~ 125°C | POR | Tape & Reel (TR) | Surface Mount | - | - | 1.8 V ~ 5.5 V | Push-Pull | |
| PCA9557DT | N/A | IC I/O EXPANDER I2C 8B 16SOIC | - | -40°C ~ 85°C | POR | Tape & Reel (TR) | Surface Mount | - | - | 2.3 V ~ 5.5 V | Open Drain, Push-Pull | |
| PCA9535BS,118 | NXP Semiconductors / Freescale | IC I/O EXPANDER I2C 16B 24HVQFN | - | -40°C ~ 85°C | POR | Tape & Reel (TR) | Surface Mount | - | - | 2.3 V ~ 5.5 V | Push-Pull | |
| TCA9554APWR | N/A | IC I/O EXPANDER I2C 8BIT 16TSSOP | - | -40°C ~ 85°C | POR | Tape & Reel (TR) | Surface Mount | - | - | 1.65 V ~ 5.5 V | Push-Pull | |
| MAX7310AEE+T | Maxim Integrated | IC I/O EXPANDER I2C 8B 16QSOP | - | -40°C ~ 125°C | POR | Cut Tape (CT) | Surface Mount | - | - | 2.3 V ~ 5.5 V | Open Drain, Push-Pull | |
| TCA9538DBR | 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 | |
| PCF8574DWE4 | N/A | IC I/O EXPANDER I2C 8B 16SOIC | - | -40°C ~ 85°C | POR | Tube | Surface Mount | - | - | 2.5 V ~ 6 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.