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
MCP25020T-I/SL Microchip Technology IC I/O EXPANDER CAN 8B 14SOIC 0 $1.99
MAX7322ATE+T Maxim Integrated IC I/O EXPANDER I2C 4B 16TQFN 0 $1.95
PCF8575DB Texas Instruments IC I/O EXPANDER I2C 16B 24SSOP 0 $1.94
MAX7319ATE+T Maxim Integrated IC I/O EXPANDER I2C 8B 16TQFN 0 $1.90
MAX7321AEE+T Maxim Integrated IC I/O EXPANDER I2C 8B 16QSOP 0 $1.90
CP2120-GMR Silicon Labs IC I/O EXPANDER I2C/SPI 8B 20QFN 0 $1.89
MAX7323ATE+T Maxim Integrated IC I/O EXPANDER I2C 4B 16TQFN 0 $1.87
MAX7323AEE+T Maxim Integrated IC I/O EXPANDER I2C 4B 16QSOP 0 $1.87
PCA9535DB Texas Instruments IC I/O EXPANDER I2C 16B 24SSOP 0 $1.87
PCA9539PWRG4 Texas Instruments IC I/O EXPANDER I2C 16B 24TSSOP 0 $1.78