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
PCA9555RGER Texas Instruments IC I/O EXPANDER I2C 16B 24QFN 7276 $0.00
MCP23017T-E/SO Microchip Technology IC I/O EXPANDER I2C 16B 28SOIC 4836 $0.00
MCP23S08T-E/SS Microchip Technology IC I/O EXPANDER SPI 8B 20SSOP 2416 $0.00
MCP23S08T-E/ML Microchip Technology IC I/O EXPANDER SPI 8B 20QFN 4713 $0.00
TCA6424ARGJR Texas Instruments IC I/O EXPANDER I2C 24B 32UQFN 27115 $0.00
MCP23008T-E/SS Microchip Technology IC I/O EXPANDER 8BIT I2C 20-SSOP 3080 $0.00
SX1508BIULTRT Semtech Corporation IC EXPANDER 8 CHAN 20QFN 7855 $1.82
MCP23008T-E/SO Microchip Technology IC I/O EXPANDER I2C 8B 18SOIC 3824 $0.00
PCA9534ARGTR Texas Instruments IC I/O EXPANDER I2C 8B 16VQFN 4626 $0.00
PCA9534RGVR Texas Instruments IC I/O EXPANDER I2C 8B 16QFN 5629 $0.00