| Image | Part Number | Manufacturer | Description | Series | Operating Temperature | Features | Packaging | Mounting Type | RoHS Status | Manufacturer Part Number | Voltage - Supply | Output Type |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PCA9674TS,112 | NXP Semiconductors / Freescale | IC I/O EXPANDER I2C 8B 20SSOP | - | -40°C ~ 85°C | POR | Tube | Surface Mount | - | - | 2.3 V ~ 5.5 V | Push-Pull | |
| PCA8575DK,118 | NXP Semiconductors / Freescale | IC I/O EXPANDER I2C 16B 24SSOP | - | -40°C ~ 85°C | POR | Tape & Reel (TR) | Surface Mount | - | - | 2.3 V ~ 5.5 V | Push-Pull | |
| PCA8575D,112 | NXP Semiconductors / Freescale | IC I/O EXPANDER I2C 16B 24SOIC | - | -40°C ~ 85°C | POR | Tube | Surface Mount | - | - | 2.3 V ~ 5.5 V | Push-Pull | |
| PCA9539RPW,118 | NXP Semiconductors / Freescale | IC I/O EXPANDER I2C 16B 24TSSOP | - | -40°C ~ 85°C | POR | Tape & Reel (TR) | Surface Mount | - | - | 2.3 V ~ 5.5 V | Push-Pull | |
| PCA9674AN,112 | NXP Semiconductors / Freescale | IC I/O EXPANDER I2C 8B 16DIP | - | -40°C ~ 85°C | POR | Tube | Through Hole | - | - | 2.3 V ~ 5.5 V | Push-Pull | |
| CAT9555YI-T2 | AMI Semiconductor / ON Semiconductor | IC I/O EXPANDER I2C 16B 24TSSOP | - | -40°C ~ 85°C | POR | Tape & Reel (TR) | Surface Mount | - | - | 2.3 V ~ 5.5 V | Push-Pull | |
| PCA8574D,512 | NXP Semiconductors / Freescale | IC I/O EXPANDER I2C 8B 16SOIC | - | -40°C ~ 85°C | POR | Tube | Surface Mount | - | - | 2.3 V ~ 5.5 V | Push-Pull | |
| PCA9554DW | N/A | IC I/O EXPANDER I2C 8B 16SOIC | - | -40°C ~ 85°C | POR | Tube | Surface Mount | - | - | 2.3 V ~ 5.5 V | Push-Pull | |
| IS82C55A-5 | Intersil | IC I/O EXPANDER 24B 44PLCC | - | -40°C ~ 85°C | - | Tube | Surface Mount | - | - | 4.5 V ~ 5.5 V | Open Drain | |
| XRA1404IL16TR-F | Exar Corporation | IC I/O PORT EXPANDER 8 BIT SPI G | - | -40°C ~ 85°C | - | - | - | - | - | 1.65 V ~ 3.6 V | Open Drain |
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.