NXP Interface IC Distributor | I2C and GPIO Expanders

BeiLuo supplies genuine NXP interface ICs, the small devices that expand the I2C bus and the GPIO of a microcontroller, so a system can add ports, addresses and channels without a larger host. NXP invented the I2C bus and its interface family is the natural companion to any I2C design. The family includes the PCA9548A, an 8-channel I2C switch that fans one upstream pair out to eight downstream buses so a designer can isolate a noisy or a hot-plug section and resolve an address conflict; the PCA9555, a 16-bit I2C and SMBus I/O expander with an interrupt output; and the PCA9554, an 8-bit I/O expander in the same style, so a small host can drive more buttons, LEDs, relays and control lines. The devices share the I2C and SMBus interface, operate over a broad voltage range, support up to several devices on one bus through the address pins and provide an interrupt to the host, and they come in small TSSOP and SO packages. Typical applications include an industrial control board, a consumer product, a server and a networking system that must add I/O or isolate a bus. Every device BeiLuo ships is factory-traceable and includes an import declaration, a certificate of origin and a RoHS compliance file. Our FAE team helps you choose the function, the channel count and the package and plan the pull-ups and the layout.