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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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| MAX1608EEE | Maxim Integrated | IC EXPANDER OCTAL BUS 16-QSOP | - | Tube | Surface Mount | 2.7 V ~ 5.5 V | 16-SSOP (0.154", 3.90mm Width) Exposed Pad | MAX1608 | 16-QSOP | - | - | |
| PCA9557PW | N/A | IC I/O EXPANDER I2C 8B 16TSSOP | - | Tube | Surface Mount | 2.3 V ~ 5.5 V | 16-TSSOP (0.173", 4.40mm Width) | PCA9557 | 16-TSSOP | - | - | |
| MAX7310ATE+ | Maxim Integrated | IC I/O EXPANDER I2C 8B 16TQFN | - | Tube | Surface Mount | 2.3 V ~ 5.5 V | 16-WQFN Exposed Pad | MAX7310 | 16-TQFN (4x4) | - | - | |
| PCA9534DB | N/A | IC I/O EXPANDER I2C 8B 16SSOP | - | Tube | Surface Mount | 2.3 V ~ 5.5 V | 16-SSOP (0.209", 5.30mm Width) | PCA9534 | 16-SSOP | - | - | |
| PCF8575CDB | N/A | IC I/O EXPANDER I2C 16B 24SSOP | - | Tube | Surface Mount | 4.5 V ~ 5.5 V | 24-SSOP (0.209", 5.30mm Width) | PCF8575C | 24-SSOP | - | - | |
| CAT9554AHV4I-GT2 | AMI Semiconductor / ON Semiconductor | IC I/O EXPANDER I2C SMBUS 16TQFN | - | Tape & Reel (TR) | Surface Mount | 2.3 V ~ 5.5 V | 16-WQFN Exposed Pad | CAT9554A | 16-TQFN (4x4) | - | - | |
| MCP25025T-I/SL | Micrel / Microchip Technology | IC I/O EXPANDER CAN 8B 14SOIC | - | Tape & Reel (TR) | Surface Mount | 2.7 V ~ 5.5 V | 14-SOIC (0.154", 3.90mm Width) | MCP25025 | 14-SOIC | - | - | |
| PCA9555AHF,128 | NXP Semiconductors / Freescale | IC I/O EXPANDER I2C 24QFN | - | Tape & Reel (TR) | Surface Mount | 1.65 V ~ 5.5 V | 24-WFQFN Exposed Pad | PCA9555 | 24-HWQFN (4x4) | - | - | |
| PCA9554ATS,112 | NXP Semiconductors / Freescale | IC I/O EXPANDER I2C 8B 20SSOP | - | Tube | Surface Mount | 2.3 V ~ 5.5 V | 20-LSSOP (0.173", 4.40mm Width) | PCA9554 | 20-SSOP | - | - | |
| PCA9501BS,118 | NXP Semiconductors / Freescale | IC I/O EXPANDER I2C 8B 20HVQFN | - | Tape & Reel (TR) | Surface Mount | 2.5 V ~ 3.6 V | 20-VQFN Exposed Pad | PCA9501 | 20-HVQFN (5x5) | - | - |
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.