I/O Expanders

Devices in this family are used in conjunction with microcontrollers, microprocessors, or similar devices for the purpose of increasing the number of signal connections available for connecting peripheral devices. The typical concept of operation involves the use of serial communications requiring only a few I/O lines on the host device to read/write the status of many input/output pins on the expander device. The technique exchanges speed of communication for increased connectivity, and is best suited for applications where fast response is not critical, such as in many human interface applications.

Part Number Manufacturer Description Quantity Price Option
PCF8575DWR Texas Instruments IC I/O EXPANDER I2C 16B 24SOIC 7384 $0.00
PCF8575PWR Texas Instruments IC I/O EXPANDER I2C 16B 24TSSOP 8095 $0.00
SX1509BIULTRT Semtech Corporation IC GPIO EXPANDER I2C 16CH 28QFN 21710 $0.00
MCP23S17T-E/SS Microchip Technology IC I/O EXPANDER SPI 16B 28SSOP 10519 $0.00
PCA9654EDTR2G ON Semiconductor IC I/O EXPANDER 8BIT I2C 16TSSOP 4638 $0.00
MCP23S09T-E/MG Microchip Technology IC I/O EXPANDER SPI 8B 16QFN 5143 $0.00
MCP23S17T-E/SO Microchip Technology IC I/O EXPANDER SPI 16B 28SOIC 8371 $0.00
MCP23017T-E/SS Microchip Technology IC I/O EXPANDER 16BIT I2C 28SSOP 23918 $0.00
PCA9539RGER Texas Instruments IC I/O EXPANDER I2C 16B 24VQFN 5663 $0.00
PCA9555DWR Texas Instruments IC I/O EXPANDER I2C 16B 24SOIC 4489 $0.00