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
PCA6107DW Texas Instruments IC I/O EXPANDER I2C 8B 18SOIC 0 $1.35
TCA6416RTWR Texas Instruments IC I/O EXPANDER I2C 16B 24WQFN 0 $1.35
MCP23016T-I/SS Microchip Technology IC I/O EXPANDER I2C 16B 28SSOP 0 $1.32
MCP23018T-E/SS Microchip Technology IC I/O EXPANDER I2C 16B 24SSOP 0 $1.30
PI4IOE5V9555LE Diodes Incorporated IC I/O EXPANDER 16B I2C 24TSSOP 0 $1.29
PCA9535PWRG4 Texas Instruments IC I/O EXPANDER I2C 16B 24TSSOP 0 $1.26
PCA9535RTWR Texas Instruments IC I/O EXPANDER I2C 16B 24WQFN 0 $0.00
MAX7321ATE+T Maxim Integrated IC I/O EXPANDER I2C 8B 16TQFN 0 $1.26
PCA9538DW Texas Instruments IC I/O EXPANDER I2C 8B 16SOIC 0 $1.25
PCA9538PWG4 Texas Instruments IC I/O EXPANDER I2C 8B 16TSSOP 0 $1.25