| Image | Part Number | Manufacturer | Description | Series | Operating Temperature | Features | Packaging | Mounting Type | RoHS Status | Manufacturer Part Number | Voltage - Supply | Output Type |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PCA9554ADB,112 | NXP Semiconductors / Freescale | IC I/O EXPANDER I2C 8B 16SSOP | - | -40°C ~ 85°C | POR | Tube | Surface Mount | - | - | 2.3 V ~ 5.5 V | Push-Pull | |
| SX1508IULTRT | Semtech | IC GPIO EXPANDER I2C 8CH 20QFN | - | -40°C ~ 85°C | Keypad Controller, LED Output, POR | Tape & Reel (TR) | Surface Mount | - | - | 1.425 V ~ 3.6 V | Open Drain, Push-Pull | |
| MAX7324AEG+T | Maxim Integrated | IC I/O EXPANDER I2C 8B 24QSOP | - | -40°C ~ 125°C | POR | Tape & Reel (TR) | Surface Mount | - | - | 1.71 V ~ 5.5 V | Push-Pull | |
| MAX7323AEE+T | Maxim Integrated | IC I/O EXPANDER I2C 4B 16QSOP | - | -40°C ~ 125°C | POR | Tape & Reel (TR) | Surface Mount | - | - | 1.71 V ~ 5.5 V | Open Drain, Push-Pull | |
| PCAL9554CPWJ | NXP Semiconductors / Freescale | IC GPIO EXPANDER 16TSSOP | Agile | -40°C ~ 85°C | POR | Tape & Reel (TR) | Surface Mount | - | - | 1.65 V ~ 5.5 V | Open Drain, Push-Pull | |
| PCF8575PW | N/A | IC I/O EXPANDER I2C 16B 24TSSOP | - | -40°C ~ 85°C | POR | Tube | Surface Mount | - | - | 4.5 V ~ 5.5 V | Push-Pull | |
| PCA9554AN,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 | |
| MCP25020T-E/SL | Micrel / Microchip Technology | IC I/O EXPANDER CAN 8B 14SOIC | - | -40°C ~ 125°C | EEPROM, POR, PWM | Tape & Reel (TR) | Surface Mount | - | - | 4.5 V ~ 5.5 V | Push-Pull | |
| PCA9556PW,112 | NXP Semiconductors / Freescale | IC I/O EXPANDER I2C 8B 16TSSOP | - | -40°C ~ 85°C | POR | Tube | Surface Mount | - | - | 3 V ~ 5.5 V | Open Drain, Push-Pull | |
| PCF8575DWG4 | N/A | IC I/O EXPANDER I2C 16B 24SOIC | - | -40°C ~ 85°C | POR | Tube | Surface Mount | - | - | 2.5 V ~ 5.5 V | Push-Pull |
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.