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
PCA9539BS,115 NXP USA Inc. IC I/O EXPANDER I2C/SMBU 24HVQFN 1031 $0.00
PCA9539RBS,118 NXP USA Inc. IC I/O EXPANDER I2C 16B 24HVQFN 3094 $0.00
PCA9539BS,118 NXP USA Inc. IC I/O EXPANDER I2C 16B 24HVQFN 4690 $0.00
PCA9500PW,118 NXP USA Inc. IC I/O EXPANDER I2C 8B 16TSSOP 1616 $0.00
TCA1116PWR Texas Instruments IC I/O EXPANDR I2C 16BIT 24TSSOP 1546 $0.00
MIC74YQS-TR Microchip Technology IC I/O EXPANDER I2C 8B 16QSOP 1884 $0.00
TCA1116RTWR Texas Instruments IC I/O EXPANDER I2C 16BIT 24WQFN 10780 $0.00
PCA9555D,118 NXP USA Inc. IC I/O EXPANDER I2C 16B 24SOIC 1950 $0.00
PCA9554PW/Q900,118 NXP USA Inc. IC I/O EXPANDER I2C 8B 16TSSOP 2338 $0.00
PCA9554DBR Texas Instruments IC I/O EXPANDER I2C 8B 16SSOP 1932 $0.00