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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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PCA8575BS,118 | NXP Semiconductors / Freescale | IC I/O EXPANDER I2C 16B 24HVQFN | - | Tape & Reel (TR) | Surface Mount | 2.3 V ~ 5.5 V | 24-VFQFN Exposed Pad | PCA8575 | 24-HVQFN (4x4) | - | - | |
| TCA9539RGER | N/A | IC I/O EXPANDER I2C 16B 24VQFN | - | Original-Reel® | Surface Mount | 1.65 V ~ 5.5 V | 24-VFQFN Exposed Pad | - | 24-VQFN (4x4) | - | - | |
| PCF8574ADGVR | N/A | IC I/O EXPANDER I2C 8B 20TVSOP | - | Tape & Reel (TR) | Surface Mount | 2.5 V ~ 6 V | 20-TFSOP (0.173", 4.40mm Width) | PCF8574A | 20-TVSOP | - | - | |
| PCA9555D,112 | NXP Semiconductors / Freescale | IC I/O EXPANDER I2C 16B 24SOIC | - | Tube | Surface Mount | 2.3 V ~ 5.5 V | 24-SOIC (0.295", 7.50mm Width) | PCA9555 | 24-SO | - | - | |
| IMQ82C55AZ | Intersil | IC I/O EXPANDER 24B 44MQFP | - | Tube | Surface Mount | 4.5 V ~ 5.5 V | 44-QFP | 82C55A | 44-MQFP (10x10) | - | - | |
| PCA9557PW,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) | PCA9557 | 16-TSSOP | - | - | |
| TCA6408PWR | N/A | IC I/O EXPANDER I2C 8B 16TSSOP | - | Tape & Reel (TR) | Surface Mount | 1.65 V ~ 5.5 V | 16-TSSOP (0.173", 4.40mm Width) | TCA6408 | 16-TSSOP | - | - | |
| PCA9675PW/S911,118 | 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) | PCA9675 | 24-TSSOP | - | - | |
| PCA9554AD,118 | NXP Semiconductors / Freescale | IC I/O EXPANDER I2C 8B 16SOIC | - | Tape & Reel (TR) | Surface Mount | 2.3 V ~ 5.5 V | 16-SOIC (0.295", 7.50mm Width) | PCA9554 | 16-SO | - | - | |
| CAT9554AYI-GT2 | AMI Semiconductor / ON Semiconductor | IC I/O EXPANDER I2C 8B 16TSSOP | - | Tape & Reel (TR) | Surface Mount | 2.3 V ~ 5.5 V | 16-TSSOP (0.173", 4.40mm Width) | CAT9554A | 16-TSSOP | - | - |
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.