22-Bit SPI I/O Expander with Agile I/O Features
PCAL9722 Receive alerts
The PCAL9722 is an ultra-low voltage 22-bit I/O expander and translator with SPI interface and is ideal for a wide range of applications that require expansion of inputs and outputs to their existing micro and reduces design cycle time. Integrated Agile I/O features further enable flexible and configurable designs with push-pull or open-drain outputs, interrupt status registers, four different output drive strengths, enable and resistor selector for pull-up and pull-down resistors and interrupt mask options.
Product Details
Features
High Channel Count Expansion
- Industry’s first 22-bit GPIO with SPI
Highly Configurable Agile I/O Features
- Push-pull or open-drain outputs
- Interrupt status registers
- Four different output drive strengths
- Enable and resistor selector for pull-up and pull-down resistors
- Interrupt mask options
Robust Features
- Schmitt trigger action allows slow input transition and better switching noise immunity
- 5.5 V tolerant I/O ports and SPI bus pins
- Noise filter on SPI inputs
- Latch-up performance exceeds 100 mA per JESD 78, Class II
- ESD protection exceeds JESD 22
Part numbers include: PCAL9722HN, PCAL9722HN/Q900.
Documentation
Quick reference to our documentation types.