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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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| MAX7311AWG+T | Maxim Integrated | IC I/O EXPANDER I2C 16B 24SOIC | - | Cut Tape (CT) | Surface Mount | 2 V ~ 5.5 V | 24-SOIC (0.295", 7.50mm Width) | - | 24-SOIC | - | - | |
| TCA6408PWRG4 | N/A | IC I/O EXPANDER I2C 8B 16TSSOP | - | Tape & Reel (TR) | Surface Mount | 1.65 V ~ 5.5 V | 16-TSSOP (0.173", 4.40mm Width) | TCA6408 | 16-TSSOP | - | - | |
| PCA8574APW,118 | NXP Semiconductors / Freescale | IC I/O EXPANDER I2C 8B 16TSSOP | - | Tape & Reel (TR) | Surface Mount | 2.3 V ~ 5.5 V | 16-TSSOP (0.173", 4.40mm Width) | PCA8574 | 16-TSSOP | - | - | |
| TCA6408PWG4 | N/A | IC I/O EXPANDER I2C 8B 16TSSOP | - | Tube | Surface Mount | 1.65 V ~ 5.5 V | 16-TSSOP (0.173", 4.40mm Width) | TCA6408 | 16-TSSOP | - | - | |
| NCT5655W | Nuvoton Technology Corporation America | SMBUS-GPIO EXPANDER; 16 GPIO PIN | - | - | Surface Mount | 2.3 V ~ 5.5 V | 24-TSSOP (0.173", 4.40mm Width) | - | 24-TSSOP | - | - | |
| PI4IOE5V9539ZDEX | Diodes Incorporated | IC I/O EXPANDER 16B I2C 24TQFN | - | Tape & Reel (TR) | Surface Mount | 2.3 V ~ 5.5 V | 24-TSSOP (0.173", 4.40mm Width) | - | 24-TSSOP | - | - | |
| PCA9539DW | N/A | IC I/O EXPANDER I2C 16B 24SOIC | - | Tube | Surface Mount | 2.3 V ~ 5.5 V | 24-SOIC (0.295", 7.50mm Width) | PCA9539 | 24-SOIC | - | - | |
| PCA9555DW | N/A | IC I/O EXPANDER I2C 16B 24SOIC | - | Tube | Surface Mount | 2.3 V ~ 5.5 V | 24-SOIC (0.295", 7.50mm Width) | PCA9555 | 24-SOIC | - | - | |
| MCP23S17-E/SO | Micrel / Microchip Technology | IC I/O EXPANDER SPI 16B 28SOIC | - | Tube | Surface Mount | 1.8 V ~ 5.5 V | 28-SOIC (0.295", 7.50mm Width) | MCP23S17 | 28-SOIC | - | - | |
| MCP23018-E/SO | Micrel / Microchip Technology | IC I/O EXPANDER I2C 16B 28SOIC | - | Tube | Surface Mount | 1.8 V ~ 5.5 V | 28-SOIC (0.295", 7.50mm Width) | MCP23018 | 28-SOIC | - | - |
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.