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.

DACs and ADCs

Used for communication and protocol conversion.

DIP Switch

Replacement for mechanical switches.

General Purpose I/O (GPIO)

Drives LED and monitor switches without using any microprocessor pins.

LED Controllers

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.

Voltage Level Translators

Allows easy connection between a wide range of supply voltage domains.

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

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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