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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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| TCA1116PWR | N/A | IC I/O EXPANDR I2C 16BIT 24TSSOP | - | Cut Tape (CT) | Surface Mount | 1.65 V ~ 5.5 V | 24-TSSOP (0.173", 4.40mm Width) | TCA1116 | 24-TSSOP | - | - | |
| CMS82C55AZ | Intersil | IC I/O EXPANDER 24B 44PLCC | - | Bulk | Surface Mount | 4.5 V ~ 5.5 V | 44-LCC (J-Lead) | 82C55A | 44-PLCC (16.58x16.58) | - | - | |
| JLC1562BFG | AMI Semiconductor / ON Semiconductor | IC I/O EXPANDER I2C 8B 16SOEIAJ | - | Tube | Surface Mount | 4.2 V ~ 6 V | 16-SOIC (0.209", 5.30mm Width) | JLC1562 | 16-SOIC | - | - | |
| PCA9675DB,112 | NXP Semiconductors / Freescale | IC I/O EXPANDER I2C 16B 24SSOP | - | Tube | Surface Mount | 2.3 V ~ 5.5 V | 24-SSOP (0.209", 5.30mm Width) | PCA9675 | 24-SSOP | - | - | |
| PCF8574PWG4 | N/A | IC I/O EXPANDER I2C 8B 20TSSOP | - | Tube | Surface Mount | 2.5 V ~ 6 V | 20-TSSOP (0.173", 4.40mm Width) | PCF8574 | 20-TSSOP | - | - | |
| SX1509BIULTRT | Semtech | IC GPIO EXPANDER I2C 16CH 28QFN | - | Tape & Reel (TR) | Surface Mount | 1.425 V ~ 3.6 V | 28-UFQFN Exposed Pad | - | 28-QFN-UT (4x4) | - | - | |
| PCA9554ADB,118 | NXP Semiconductors / Freescale | IC I/O EXPANDER I2C 8B 16SSOP | - | Tape & Reel (TR) | Surface Mount | 2.3 V ~ 5.5 V | 16-SSOP (0.209", 5.30mm Width) | PCA9554 | 16-SSOP | - | - | |
| PCA9539AHF,128 | NXP Semiconductors / Freescale | IC I/O EXPANDER I2C 24HWQFN | - | Tape & Reel (TR) | Surface Mount | 1.65 V ~ 5.5 V | 24-WFQFN Exposed Pad | PCA9539 | 24-HWQFN (4x4) | - | - | |
| MAX7313ATG+T | Maxim Integrated | IC I/O EXPANDER I2C 16B 24TQFN | - | Tape & Reel (TR) | Surface Mount | 2 V ~ 3.6 V | 24-WFQFN Exposed Pad | MAX7313 | 24-TQFN (4x4) | - | - | |
| MCP23018-E/MJ | Micrel / Microchip Technology | IC I/O EXPANDER I2C 16B 24QFN | - | Tube | Surface Mount | 1.8 V ~ 5.5 V | 24-VFQFN Exposed Pad | MCP23018 | 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.