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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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PCA9557BSHP | NXP Semiconductors / Freescale | 8-BIT I2C-BUS AND SMBUS I/O PORT | - | - | Surface Mount | 2.3 V ~ 5.5 V | 16-VQFN Exposed Pad | - | 16-HVQFN (4x4) | - | - | |
| MCP25055-I/SL | Micrel / Microchip Technology | IC I/O EXPANDER CAN 8B 14SOIC | - | Tube | Surface Mount | 2.7 V ~ 5.5 V | 14-SOIC (0.154", 3.90mm Width) | MCP25055 | 14-SOIC | - | - | |
| PCF8574TS/3,112 | NXP Semiconductors / Freescale | IC I/O EXPANDER I2C 8B 20SSOP | - | Tube | Surface Mount | 2.5 V ~ 6 V | 20-LSSOP (0.173", 4.40mm Width) | PCF8574 | 20-SSOP | - | - | |
| LM8335TLE/NOPB | N/A | IC GPIO EXPANDER 16DSBGA | - | Tape & Reel (TR) | Surface Mount | 1.8 V ~ 3.3 V | 16-WFBGA, DSBGA | LM8335 | 16-DSBGA (2.5x2.12) | - | - | |
| MAX7316ATE+ | Maxim Integrated | IC I/O EXPANDER I2C 16B 16TQFN | - | Tube | Surface Mount | 2 V ~ 3.6 V | 16-WFQFN Exposed Pad | MAX7316 | 16-TQFN (3x3) | - | - | |
| PCAL9539AHF,128 | NXP Semiconductors / Freescale | IC I/O EXPANDER 16BIT 24HWQFN | Agile | Tape & Reel (TR) | Surface Mount | 1.65 V ~ 5.5 V | 24-WFQFN Exposed Pad | PCAL9539A | 24-HWQFN (4x4) | - | - | |
| MAX7310AEE+ | Maxim Integrated | IC I/O EXPANDER I2C 8B 16QSOP | - | Tube | Surface Mount | 2.3 V ~ 5.5 V | 16-SSOP (0.154", 3.90mm Width) | MAX7310 | 16-QSOP | - | - | |
| PCA9554BPWJ | NXP Semiconductors / Freescale | IC GPIO EXPANDER 16TSSOP | - | Original-Reel® | Surface Mount | 1.65 V ~ 5.5 V | 16-TSSOP (0.173", 4.40mm Width) | PCA9554 | 16-TSSOP | - | - | |
| PCAL6408APWJ | NXP Semiconductors / Freescale | IC I/O EXPANDER 16TSSOP | Agile | Tape & Reel (TR) | Surface Mount | 1.65 V ~ 5.5 V | 16-TSSOP (0.173", 4.40mm Width) | PCAL6408 | 16-TSSOP | - | - | |
| PCA9554ARGVR | N/A | IC I/O EXPANDER I2C 8B 16VQFN | - | Tape & Reel (TR) | Surface Mount | 2.3 V ~ 5.5 V | 16-VQFN Exposed Pad | PCA9554A | 16-VQFN (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.