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
CY8C9540A-24PVXIT Cypress Semiconductor Corp IC I/O EXPANDER I2C 40B 48SSOP 0 $4.58
MAX7300AAI+T Maxim Integrated IC I/O EXPANDER I2C 28B 28SSOP 0 $3.46
MAX7311AAG+T Maxim Integrated IC I/O EXPANDER I2C 16B 24SSOP 0 $3.22
MCP25050T-E/SL Microchip Technology IC I/O EXPANDER CAN 8B 14SOIC 0 $3.17
MAX7311ATG+T Maxim Integrated IC I/O EXPANDER I2C 16B 24TQFN 0 $3.10
PCA9539PWG4 Texas Instruments IC I/O EXPANDER I2C 16B 24TSSOP 0 $2.88
PCA9539PWE4 Texas Instruments IC I/O EXPANDER I2C 16B 24TSSOP 0 $2.88
MAX7314ATG+T Maxim Integrated IC I/O EXPANDER I2C 16B 24TQFN 0 $2.64
MAX7312AWG+T Maxim Integrated IC I/O EXPANDER I2C 16B 24SOIC 0 $2.62
MAX7312AUG+T Maxim Integrated IC I/O EXPANDER I2C 16B 24TSSOP 0 $2.56