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
PCA9554APWRG4 Texas Instruments IC I/O EXPANDER I2C 8B 16TSSOP 0 $0.68
XRA1203IG24TR-F MaxLinear, Inc. IC I/O PORT EXPANDER 16 BIT I2C 0 $0.66
PI4IOE5V9555LEX Diodes Incorporated IC I/O EXPANDER 16B I2C 24TSSOP 0 $0.64
PI4IOE5V9539LEX Diodes Incorporated IC I/O EXPANDER 16B I2C 24TSSOP 0 $0.64
IS31IO7325-QFLS4-TR ISSI (Integrated Silicon Solution, Inc.) IC MULTI-FUNCTION I/O DVR 24QFN 0 $0.64
XRA1201PIG24TR-F MaxLinear, Inc. IC I/O PORT EXPANDER 16 BIT I2C 0 $0.61
XRA1201IL24TR-F MaxLinear, Inc. IC I/O PORT EXPANDER 16 BIT I2C 0 $0.61
XRA1201IG24TR-F MaxLinear, Inc. IC I/O PORT EXPANDER 16 BIT I2C 0 $0.61
PCA9554ARGTR Texas Instruments IC I/O EXPANDER I2C 8B 16QFN 1 $0.00
PCA9536DRG4 Texas Instruments IC I/O EXPANDER I2C 4B 8SOIC 0 $0.55