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
PCF8574ADWR Texas Instruments IC I/O EXPANDER I2C 8B 16SOIC 7863 $0.00
TCA9534APWR Texas Instruments IC I/O EXPANDER I2C 8B 16TSSOP 2984 $0.00