Access Secure Information About Our Products
Sign in to access authorized secure information. Learn more about secure access rights.
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 to help designers reduce board space and complexity while simplifying software development and lowering overall system cost.
Our agile I2C GPIO includes features to eliminate external components as pull-up resistors, open-drain outputs, output drive control and input latches to permit faster software development and more robust firmware performance. These GPIOs work with I2C and SPI interfaces and with applications such as: keyboards, IO expansion, driving LED and signal monitoring.
Choosing the right product just got easier. View all product finder tools.
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
Ultra-low-voltage, level translating, 34-bit I2C-bus/SMBus I/O expander
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.
Read the selector guideDiscover other solutions we offer for your designs.
Read the brochureNXP’s robust portfolio of automotive-compliant products includes over 700 devices and solutions that help enable breakthrough automotive designs.
Read the fact sheetSign in to access authorized secure information. Learn more about secure access rights.
Important: After email verification refresh this page.
Highly secure information about this product portfolio is available, request access rights. Learn more about secure access rights.
Note: Your application will be reviewed individually by NXP. A non-disclosure agreement will help expedite this process.
Your request to gain secure access rights has been declined. If you think this has been declined in error, request access again.
Access More. Additional secure (restricted) information is available for this product portfolio. Request additional access.
We are currently processing your secure access rights request. Once processed, a notification will be sent to ${emailId}.
Some files related to your secure access rights are temporary unavailable due to a system error. Please check back.
Your access to some secure information has been disabled while we process the updates you made to your NXP Account > Profile. We'll send you an email when the verification process is completed.
There is no information to display.
500 characters remaining.
*Describe the justification for your access request for the approver.