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Our versatile general purpose I/O (GPIO) expanders provide 4, 8, 16, 24 or 40 general-purpose I/O pins for the CPU via the I²C-bus or SPI-bus to help designers reduce board space and complexity while simplifying software development and lowering overall system cost.
Our Agile I/O feature set enables designers to configure the GPIO to optimize performance to their end application. It includes features to eliminate external components such as pullup resistors, open-drain outputs, output drive control and input latches to permit faster software development and more robust firmware performance. These GPIOs can be used in a variety of applications such as keyboards, IO expansion, driving LED and signal monitoring.
AEC-Q100 Qualified GPIOs are designed for the highest reliability and lowest power consumption and are available with I²C or SPI bus interfaces. They have an extended operating temperature range of up to 125 °C and AEC-Q100 automotive-compliant qualification.
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Ultra-Low Voltage 14-bit I/O Expander and Translator with SPI Interface
Ultra-Low Voltage 22-bit I/O Expander and Translator with SPI
Low-Voltage 16-bit I²C-Bus I/O Port with Interrupt and Weak Pull-Up
The PCAL9722 makes it easy to add 22 I/O channels. Users can truly optimize their application with the 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.
Ultra-Low Voltage 14-bit I/O Expander and Translator with SPI Interface
Ultra-Low Voltage 22-bit I/O Expander and Translator with SPI
8-bit I²C-Bus and SMBus Low-Power I/O Port with Interrupt and Reset
16-bit I²C-Bus and SMBus Low-Power I/O Port with Interrupt and Reset
18 V Tolerant SPI 16-bit GPI with Maskable INT
18 V Tolerant SPI 8-bit GPI with Maskable INT
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Discover the advantages of the I²C based I/O expanders.
Learn more as we dive deeper into this subject matter with experts from our High-Performance Analog team.
The PCAL6534 is a 34-bit general-purpose I/O expander that provides remote I/O expansion for a majority of microcontroller families via the Fast-mode Plus (Fm+) I²C-bus interface.
Agile I/O versions reduce system cost and ease software development.
Read the brochureSelector guide of interface components for all your design needs.
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General Purpose I/O (GPIO)
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