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
CAT9554YI-GT2 ON Semiconductor IC I/O EXPANDER I2C 8B 16TSSOP 1941 $0.00
PCAL9538APWJ NXP USA Inc. IC GPIO EXPANDER 16TSSOP 0 $0.71
MCP23016T-I/ML Microchip Technology IC I/O EXPANDER I2C 16B 28QFN 1443 $1.74
PCA9554DGVR Texas Instruments IC I/O EXPANDER I2C 8B 16TVSOP 1934 $1.90
PCA9535EDTR2G ON Semiconductor IC I/O EXPANDER 16B 24TSSOP 0 $0.94
MCP23S18-E/SP Microchip Technology IC EXPANDER SPI 16BIT I/O 28SDIP 277 $1.65
MCP23016-I/SP Microchip Technology IC I/O EXPANDER I2C 16B 28SDIP 152 $1.63
MCP23016-I/SO Microchip Technology IC I/O EXPANDER I2C 16B 28SOIC 355 $1.63
PCA6408AHKX NXP USA Inc. IC I/O EXPANDER 8BIT GP 16XQFN 0 $0.49
PCAL6408AHKX NXP USA Inc. IC I/O EXPANDER 8BIT I2C 16XQFN 0 $0.00