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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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| MAX7300ATL+ | Maxim Integrated | IC I/O EXPANDER 2WIRE 40TQFN | - | Tube | Surface Mount | 2.5 V ~ 5.5 V | 40-WFQFN Exposed Pad | MAX7300 | 40-TQFN-EP (6x6) | - | - | |
| PCA9535ECMTTXG | AMI Semiconductor / ON Semiconductor | IC I/O Expander 16B 24WQFN | - | Tape & Reel (TR) | Surface Mount | 1.65 V ~ 5.5 V | 24-WFQFN Exposed Pad | PCA9535E | 24-QFN (4x4) | - | - | |
| MAX7320AEE+T | Maxim Integrated | IC I/O EXPANDER I2C 8B 16QSOP | - | Tape & Reel (TR) | Surface Mount | 1.71 V ~ 5.5 V | 16-SSOP (0.154", 3.90mm Width) | MAX7320 | 16-QSOP | - | - | |
| PCF8575CDBG4 | 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 | - | - | |
| PCF8574P,112 | NXP Semiconductors / Freescale | IC I/O EXPANDER I2C 8B 16DIP | - | Tube | Through Hole | 2.5 V ~ 6 V | 16-DIP (0.300", 7.62mm) | PCF8574 | 16-DIP | - | - | |
| PCA9538D,118 | NXP Semiconductors / Freescale | IC I/O EXPANDER I2C 8B 16SOIC | - | Cut Tape (CT) | Surface Mount | 2.3 V ~ 5.5 V | 16-SOIC (0.295", 7.50mm Width) | PCA9538 | 16-SO | - | - | |
| XRA1203IL24-F | Exar Corporation | IC I/O PORT EXPANDER I2C 24QFN | - | Tray | Surface Mount | 1.65 V ~ 3.6 V | 24-VFQFN Exposed Pad | - | 24-QFN (4x4) | - | - | |
| PI4IOE5V9539LE | Diodes Incorporated | IC I/O EXPANDER 16B I2C 24TSSOP | - | Tube | Surface Mount | 2.3 V ~ 5.5 V | 24-TSSOP (0.173", 4.40mm Width) | - | 24-TSSOP | - | - | |
| IS82C55A | Intersil | IC I/O EXPANDER 24B 44PLCC | - | Tube | Surface Mount | 4.5 V ~ 5.5 V | 44-LCC (J-Lead) | 82C55A | 44-PLCC (16.58x16.58) | - | - | |
| IQ82C55A96 | Intersil | IC I/O EXPANDER 24B 44MQFP | - | Tape & Reel (TR) | Surface Mount | 4.5 V ~ 5.5 V | 44-QFP | 82C55A | 44-MQFP (10x10) | - | - |
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.