I2C, SPI, I3C Interface Devices

The I²C-bus appears in virtually every application—from cellular handsets and LED blinkers to LCD displays. Our leadership position in I²C-bus devices offers you a vast portfolio to address all your design needs. In addition many of these product groups now include a higher speed I3C-bus or SPI interface.

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I²C, SPI, I3C Interface Device Families

Bus Controllers and Bridge ICs

Bridge ICs allow designers to connect devices that use different serial buses.

DIP Switch

Replacement for mechanical switches.

General Purpose I/O (GPIO)

Drives LED and monitor switches without using any microprocessor pins.

LED Drivers

For blinking, dimming and color mixing LEDs; frees the microprocessor for other purposes.

Multiplexers/Switches

Connects an upstream I²C-bus to any combination of downstream I²C buses.

Real-Time Clocks (RTC)

Targets applications needing accurate timekeeping: ultra-low-power, high-temperature tolerant, temperature compensated and high-accuracy.

Repeaters, Hubs and Extenders

Buffers I²C signals for a more reliable system and better noise immunity.

Temperature Sensors

Offers high-resolution solutions for thermal management—from process control to computing applications.

Serial Peripheral Interface (SPI) Devices

Full duplex synchronous serial interface consisting of four signals used for short distance high-speed communications.

I3C Interface Devices

Provides a scalable, medium-speed, utility and control bus for connecting peripherals to an application processor

Bridges

Bridge ICs offer compact, low-power protocol converters for creating simpler, more flexible designs while reducing software overhead and time-to-market.

PCAL9722 - Industry First 22-bit GPIO with SPI for Industrial, IoT and Communication Applications

The PCAL9722 makes it easy to add 22 I/O channels. Users can truly optimize their application with flexibility to set each channel to be an input or output as well as use our innovative Agile I/O features to configure the PCAL9722 registers.

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