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
PCA9501PW,118 NXP USA Inc. IC I/O EXPANDER I2C 8B 20TSSOP 2158 $0.00
PCA9501BS,118 NXP USA Inc. IC I/O EXPANDER I2C 8B 20HVQFN 4074 $0.00
PCA9539DGVR Texas Instruments IC I/O EXPANDER I2C 16B 24TVSOP 1681 $0.00
PCA9539DBR Texas Instruments IC I/O EXPANDER I2C 16B 24SSOP 2880 $0.00
PCA9555DBQR Texas Instruments IC I/O EXPANDER I2C 16B 24QSOP 1519 $0.00
PCA9535ECMTTXG ON Semiconductor IC I/O EXPANDER 16B 24WQFN 2421 $0.00
PCA9535ECDTR2G ON Semiconductor IC I/O EXPANDER 16B 24TSSOP 2479 $0.00
PCA9555DGVR Texas Instruments IC I/O EXPANDER I2C 16B 24TVSOP 2503 $0.00
PCA9655EMTTXG ON Semiconductor IC I/O EXPANDER I2C 16B QFN-24 2835 $0.00
PCA9502BS,128 NXP USA Inc. IC I/O EXPANDER I2C/SPI 24HVQFN 1097 $0.00