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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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| MCP23008-E/ML | Micrel / Microchip Technology | IC I/O EXPANDER I2C 8B 20QFN | - | Tray | Surface Mount | 1.8 V ~ 5.5 V | 20-VFQFN Exposed Pad | MCP23008 | 20-QFN-EP (4x4) | - | - | |
| TCA6408ARSVR | N/A | IC I/O EXPANDER I2C 8B 16QFN | - | Tape & Reel (TR) | Surface Mount | 1.65 V ~ 5.5 V | 16-UFQFN | TCA6408A | 16-UQFN (2.6x1.8) | - | - | |
| PCF8575CPWR | N/A | IC I/O EXPANDER I2C 16B 24TSSOP | - | Tape & Reel (TR) | Surface Mount | 4.5 V ~ 5.5 V | 24-TSSOP (0.173", 4.40mm Width) | PCF8575C | 24-TSSOP | - | - | |
| PCA9536DP,118 | NXP Semiconductors / Freescale | IC I/O EXPANDER I2C 4B 8TSSOP | - | Tape & Reel (TR) | Surface Mount | 2.3 V ~ 5.5 V | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) | PCA9536 | 8-TSSOP | - | - | |
| PI4IOE5V9539LEX | Diodes Incorporated | IC I/O EXPANDER 16B I2C 24TSSOP | - | Tape & Reel (TR) | Surface Mount | 2.3 V ~ 5.5 V | 24-TSSOP (0.173", 4.40mm Width) | - | 24-TSSOP | - | - | |
| PCA9555PWRE4 | N/A | IC I/O EXPANDER I2C 16B 24TSSOP | - | Tape & Reel (TR) | Surface Mount | 2.3 V ~ 5.5 V | 24-TSSOP (0.173", 4.40mm Width) | PCA9555 | 24-TSSOP | - | - | |
| ADP5587ACPZ-1-R7 | ADI (Analog Devices, Inc.) | IC I/O EXPANDER/KEYBRD CTRLR | - | Tape & Reel (TR) | Surface Mount | 1.65 V ~ 3.6 V | 24-WFQFN Exposed Pad, CSP | ADP5587 | 24-LFCSP-WQ (4x4) | - | - | |
| CS82C55A-596 | Intersil | IC I/O EXPANDER 24B 44PLCC | - | Tape & Reel (TR) | Surface Mount | 4.5 V ~ 5.5 V | 44-LCC (J-Lead) | 82C55A | 44-PLCC (16.58x16.58) | - | - | |
| MCP23S18T-E/MJ | Micrel / Microchip Technology | IC I/O EXPANDER SPI 16B 24QFN | - | Tape & Reel (TR) | Surface Mount | 1.8 V ~ 5.5 V | 24-VFQFN Exposed Pad | MCP23S18 | 24-QFN (4x4) | - | - | |
| MCP23S18T-E/MJVAO | Micrel / Microchip Technology | EXPANDERS | Automotive, AEC-Q100 | Tape & Reel (TR) | Surface Mount | 1.8 V ~ 5.5 V | 24-VFQFN Exposed Pad | - | 24-QFN (4x4) | - | - |
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.