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
PCA6416AHF,128 NXP USA Inc. IC I/O EXPANDER 16BIT 24HWQFN 2859 $0.00
TCA9554DWR Texas Instruments IC I/O EXPANDER I2C 8BIT 16-SOIC 1039 $0.00
TCA9554ADBQR Texas Instruments IC I/O EXPANDER I2C 8BIT 16TSSOP 1356 $0.00
PCA9554ARGVR Texas Instruments IC I/O EXPANDER I2C 8B 16VQFN 1906 $0.00
PCA9670PW,118 NXP USA Inc. IC I/O EXPANDER I2C 8B 16TSSOP 1986 $0.00
TCA9554DBQR Texas Instruments IC I/O EXPANDER I2C 8BIT 16TSSOP 2751 $0.00
TCA9554APWR Texas Instruments IC I/O EXPANDER I2C 8BIT 16TSSOP 3267 $0.00
PI4IOE5V6416ZDEX Diodes Incorporated INTERFACE IO EXPANDER V-QFN4040- 3383 $0.00
PCA9670BS,118 NXP USA Inc. IC I/O EXPANDER I2C 8B 16HVQFN 3617 $0.00
TCA9554ADBR Texas Instruments IC SMBUS I/O EXPANDER I2C 16SSOP 0 $0.00