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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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| MCP23018T-E/SS | Micrel / Microchip Technology | IC I/O EXPANDER I2C 16B 24SSOP | - | Tape & Reel (TR) | Surface Mount | 1.8 V ~ 5.5 V | 24-SSOP (0.209", 5.30mm Width) | MCP23018 | 24-SSOP | - | - | |
| PCA9675DB,118 | NXP Semiconductors / Freescale | IC I/O EXPANDER I2C 16B 24SSOP | - | Tape & Reel (TR) | Surface Mount | 2.3 V ~ 5.5 V | 24-SSOP (0.209", 5.30mm Width) | PCA9675 | 24-SSOP | - | - | |
| PCA9557PWRG4 | N/A | 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) | PCA9557 | 16-TSSOP | - | - | |
| PCF8574ADGVRG4 | N/A | IC I/O EXPANDER I2C 8B 20TVSOP | - | Tape & Reel (TR) | Surface Mount | 2.5 V ~ 6 V | 20-TFSOP (0.173", 4.40mm Width) | PCF8574A | 20-TVSOP | - | - | |
| IQ82C55A | Intersil | IC I/O EXPANDER 24B 44MQFP | - | Tube | Surface Mount | 4.5 V ~ 5.5 V | 44-QFP | 82C55A | 44-MQFP (10x10) | - | - | |
| PCA9501PW,118 | NXP Semiconductors / Freescale | IC I/O EXPANDER I2C 8B 20TSSOP | - | Tape & Reel (TR) | Surface Mount | 2.5 V ~ 3.6 V | 20-TSSOP (0.173", 4.40mm Width) | PCA9501 | 20-TSSOP | - | - | |
| PCA9502BS,157 | NXP Semiconductors / Freescale | IC I/O EXPANDER I2C/SPI 24HVQFN | - | Tray | Surface Mount | 2.3 V ~ 3.6 V | 24-VFQFN Exposed Pad | PCA9502 | 24-HVQFN (4x4) | - | - | |
| PCA9673D,118 | NXP Semiconductors / Freescale | IC I/O EXPANDER I2C 16B 24SOIC | - | Tape & Reel (TR) | Surface Mount | 2.3 V ~ 5.5 V | 24-SOIC (0.295", 7.50mm Width) | PCA9673 | 24-SO | - | - | |
| XRA1206IL16MTR-F | Exar Corporation | IC I/O PORT EXPANDER 8 BIT I2C G | - | - | - | 1.65 V ~ 3.6 V | - | - | - | - | - | |
| MAX7300ATL+T | Maxim Integrated | IC I/O EXPANDER 2WIRE 40TQFN | - | Tape & Reel (TR) | Surface Mount | 2.5 V ~ 5.5 V | 40-WFQFN Exposed Pad | MAX7300 | 40-TQFN-EP (6x6) | - | - |
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.