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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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| SX1501087TRT | Semtech | IC GPIO EXPANDER I2C QFN | - | - | - | - | - | - | - | - | - | |
| XRA1206IL16TR-F | Exar Corporation | IC I/O PORT EXPANDER 8 BIT I2C G | - | - | - | 1.65 V ~ 3.6 V | - | - | - | - | - | |
| CP82C55AZ | Intersil | IC I/O EXPANDER 24B 40DIP | - | Tube | Through Hole | 4.5 V ~ 5.5 V | 40-DIP (0.600", 15.24mm) | 82C55A | 40-DIP | - | - | |
| PCA9534DWRG4 | N/A | 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) | PCA9534 | 16-SOIC | - | - | |
| PCF8574PWR | N/A | IC I/O EXPANDER I2C 8B 20TSSOP | - | Tape & Reel (TR) | Surface Mount | 2.5 V ~ 6 V | 20-TSSOP (0.173", 4.40mm Width) | PCF8574 | 20-TSSOP | - | - | |
| PCA9539RPW,112 | NXP Semiconductors / Freescale | IC I/O EXPANDER I2C 16B 24TSSOP | - | Tube | Surface Mount | 2.3 V ~ 5.5 V | 24-TSSOP (0.173", 4.40mm Width) | PCA9539 | 24-TSSOP | - | - | |
| PCA9502BS,151 | 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) | - | - | |
| XRA1404IL16-F | Exar Corporation | IC I/O EXPANDER SPI 8B 16QFN | - | Bulk | Surface Mount | 1.65 V ~ 3.6 V | 16-VFQFN Exposed Pad | - | 16-QFN (3x3) | - | - | |
| MAX7313AEG+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) | MAX7313 | 24-QSOP | - | - | |
| PCAL9535APW,118 | NXP Semiconductors / Freescale | IC I/O PORT 16BIT 24TSSOP | Agile | Cut Tape (CT) | Surface Mount | 1.65 V ~ 5.5 V | 24-TSSOP (0.173", 4.40mm Width) | PCAL9535 | 24-TSSOP | - | - |
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.