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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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PCA9673DB,118 | NXP Semiconductors / Freescale | IC I/O EXPANDER I2C 16B 24SSOP | - | Tape & Reel (TR) | Surface Mount | 2.3 V ~ 5.5 V | 24-SSOP (0.209", 5.30mm Width) | PCA9673 | 24-SSOP | - | - | |
| TCA6424RGJR | N/A | IC I/O EXPANDER I2C 24B 32QFN | - | Original-Reel® | Surface Mount | 1.65 V ~ 5.5 V | 32-UQFN Exposed Pad | TCA6424 | 32-UQFN-EP (5x5) | - | - | |
| MAX7323ATE+ | Maxim Integrated | IC I/O EXPANDER I2C 4B 16TQFN | - | Tube | Surface Mount | 1.71 V ~ 5.5 V | 16-WFQFN Exposed Pad | MAX7323 | 16-TQFN (3x3) | - | - | |
| PCA9539PW,118 | NXP Semiconductors / Freescale | IC I/O EXPANDER I2C 16B 24TSSOP | - | Tape & Reel (TR) | Surface Mount | 2.3 V ~ 5.5 V | 24-TSSOP (0.173", 4.40mm Width) | PCA9539 | 24-TSSOP | - | - | |
| PCA9674PW,112 | NXP Semiconductors / Freescale | IC I/O EXPANDER I2C 8B 16TSSOP | - | Tube | Surface Mount | 2.3 V ~ 5.5 V | 16-TSSOP (0.173", 4.40mm Width) | PCA9674 | 16-TSSOP | - | - | |
| IS82C55A96 | Intersil | IC I/O EXPANDER 24B 44PLCC | - | Tape & Reel (TR) | Surface Mount | 4.5 V ~ 5.5 V | 44-LCC (J-Lead) | 82C55A | 44-PLCC (16.58x16.58) | - | - | |
| MAX7313AEG+ | Maxim Integrated | IC I/O EXPANDER I2C 16B 24QSOP | - | Tube | Surface Mount | 2 V ~ 3.6 V | 24-SSOP (0.154", 3.90mm Width) | MAX7313 | 24-QSOP | - | - | |
| PCA9555PW,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) | PCA9555 | 24-TSSOP | - | - | |
| PCAL6416AERX | NXP Semiconductors / Freescale | IC I/O EXPANDER 16BIT 24UFBGA | Agile | Cut Tape (CT) | Surface Mount | 1.65 V ~ 5.5 V | 24-UFBGA | PCAL6416 | 24-UFBGA (2x2) | - | - | |
| PCA9570GMH | NXP Semiconductors / Freescale | IC GPIO EXPANDER 8XQFN | - | Cut Tape (CT) | Surface Mount | 1.1 V ~ 3.6 V | 8-XFQFN Exposed Pad | PCA9570 | 8-XQFN (1.6x1.6) | - | - |
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.