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| Image | Part Number | Manufacturer | Description | Series | Packaging | Mounting Type | Voltage - Supply | Package / Case | Base Part Number | Supplier Device Package | Data Format | Baud Rates |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| XRA1200PIL16MTR-F | Exar Corporation | IC I/O PORT EXPANDER 8 BIT I2C G | - | - | - | 1.65 V ~ 3.6 V | - | - | - | - | - | |
| MCP23S08T-E/ML | Micrel / Microchip Technology | IC I/O EXPANDER SPI 8B 20QFN | - | Tape & Reel (TR) | Surface Mount | 1.8 V ~ 5.5 V | 20-VFQFN Exposed Pad | MCP23S08 | 20-QFN-EP (4x4) | - | - | |
| PCA9557DT | N/A | IC I/O EXPANDER I2C 8B 16SOIC | - | Tape & Reel (TR) | Surface Mount | 2.3 V ~ 5.5 V | 16-SOIC (0.154", 3.90mm Width) | PCA9557 | 16-SOIC | - | - | |
| PCA9535BS,118 | NXP Semiconductors / Freescale | IC I/O EXPANDER I2C 16B 24HVQFN | - | Tape & Reel (TR) | Surface Mount | 2.3 V ~ 5.5 V | 24-VFQFN Exposed Pad | PCA9535 | 24-HVQFN (4x4) | - | - | |
| TCA9554APWR | N/A | IC I/O EXPANDER I2C 8BIT 16TSSOP | - | Tape & Reel (TR) | Surface Mount | 1.65 V ~ 5.5 V | 16-TSSOP (0.173", 4.40mm Width) | TCA9554A | 16-TSSOP | - | - | |
| MAX7310AEE+T | Maxim Integrated | IC I/O EXPANDER I2C 8B 16QSOP | - | Cut Tape (CT) | Surface Mount | 2.3 V ~ 5.5 V | 16-SSOP (0.154", 3.90mm Width) | - | 16-QSOP | - | - | |
| TCA9538DBR | N/A | IC I/O EXPANDER I2C 8B 16TSSOP | - | Tape & Reel (TR) | Surface Mount | 1.65 V ~ 5.5 V | 16-SSOP (0.209", 5.30mm Width) | - | 16-SSOP | - | - | |
| PCF8574DWE4 | N/A | IC I/O EXPANDER I2C 8B 16SOIC | - | Tube | Surface Mount | 2.5 V ~ 6 V | 16-SOIC (0.295", 7.50mm Width) | PCF8574 | 16-SOIC | - | - | |
| MAX7316ATE+T | Maxim Integrated | IC I/O EXPANDER I2C 16B 16TQFN | - | Tape & Reel (TR) | Surface Mount | 2 V ~ 3.6 V | 16-WFQFN Exposed Pad | MAX7316 | 16-TQFN (3x3) | - | - | |
| CMP82C55AZ | Intersil | IC PROG PERIPHERAL INTFC 40DIP | - | Tube | Through Hole | 4.5 V ~ 5.5 V | 40-DIP (0.600", 15.24mm) | 82C55A | 40-DIP | - | - |
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.