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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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PCA9539RBS,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 | PCA9539 | 24-HVQFN (4x4) | - | - | |
| MAX7314AEG+T | Maxim Integrated | IC I/O EXPANDER I2C 16B 24QSOP | - | Tape & Reel (TR) | Surface Mount | 2 V ~ 3.6 V | 24-SSOP (0.154", 3.90mm Width) | MAX7314 | 24-QSOP | - | - | |
| MAX7324ATG+ | Maxim Integrated | IC I/O EXPANDER I2C 8B 24TQFN | - | Tube | Surface Mount | 1.71 V ~ 5.5 V | 24-WFQFN Exposed Pad | MAX7324 | 24-TQFN (4x4) | - | - | |
| PCA9571GUX | NXP Semiconductors / Freescale | IC I/O EXPANDER I2C 12XQFN | - | Tape & Reel (TR) | Surface Mount | 1.1 V ~ 3.6 V | 12-XFQFN | PCA9571 | 12-XQFN (2x1.7) | - | - | |
| SX1512BIULTRT | Semtech | IC GPIO EXPANDER I2C 16CH 28QFN | - | Cut Tape (CT) | Surface Mount | 1.425 V ~ 3.6 V | 28-UFQFN Exposed Pad | - | 28-QFN-UT (4x4) | - | - | |
| PCA9674AD,518 | NXP Semiconductors / Freescale | IC I/O EXPANDER I2C 8B 16SOIC | - | Tape & Reel (TR) | Surface Mount | 2.3 V ~ 5.5 V | 16-SOIC (0.295", 7.50mm Width) | PCA9674 | 16-SO | - | - | |
| TCA9555PWR | N/A | IC I/O EXPANDER I2C 16B 24TSSOP | - | Tape & Reel (TR) | Surface Mount | 1.65 V ~ 5.5 V | 24-TSSOP (0.173", 4.40mm Width) | TCA9555 | 24-TSSOP | - | - | |
| PCA9535DW | 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) | PCA9535 | 24-SOIC | - | - | |
| PCF8574DWG4 | 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 | - | - | |
| PCA9672D,512 | NXP Semiconductors / Freescale | IC I/O EXPANDER I2C 8B 16SOIC | - | Tube | Surface Mount | 2.3 V ~ 5.5 V | 16-SOIC (0.295", 7.50mm Width) | PCA9672 | 16-SO | - | - |
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.