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PCA9575HF from NXP,NXP Semiconductors

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PCA9575HF

Manufacturer: NXP, NXP Pb-free

16-bit I2C-bus and SMBus, level translating, low voltage GPIO with reset and interrupt

Partnumber Manufacturer Quantity Availability
PCA9575HF NXP, NXP Pb-free 53800 In Stock

Description and Introduction

16-bit I2C-bus and SMBus, level translating, low voltage GPIO with reset and interrupt The **PCA9575HF** from **NXP Semiconductors** is a high-performance, low-voltage **I²C-bus GPIO expander** designed to enhance system flexibility by providing additional general-purpose input/output (GPIO) ports. This component is particularly useful in applications where microcontroller or processor GPIO pins are limited.  

Featuring **16-bit I/O expansion**, the PCA9575HF operates at voltages as low as **1.65V**, making it suitable for low-power and battery-operated devices. It supports **bidirectional data transfer** over the I²C-bus, allowing seamless integration with existing I²C host controllers. Each I/O pin can be independently configured as an input or output, offering versatile control for various peripheral interfaces.  

Key advantages include **low standby current consumption**, **interrupt output for monitoring input changes**, and **high noise immunity**, ensuring reliable performance in noisy environments. The device also incorporates internal pull-up resistors, reducing external component count.  

Common applications include **industrial automation**, **consumer electronics**, and **embedded systems** where additional GPIO expansion is required. With its compact **TSSOP-24 package**, the PCA9575HF is an efficient solution for space-constrained designs while maintaining robust functionality.  

Engineers seeking a reliable, low-power GPIO expander will find the PCA9575HF a practical choice for extending system I/O capabilities.

Application Scenarios & Design Considerations

16-bit I2C-bus and SMBus, level translating, low voltage GPIO with reset and interrupt

Alternative Part Number

  • TCA9555PWR --: 16-bit I2C/SMBus I/O expander with interrupt output, functionally similar to the PCA9575 and widely available in TSSOP package.
  • PCF8575TS --: 16-bit I2C I/O expander from NXP's PCF857x family, same vendor and similar I2C expander function, though without the same interrupt/INT features.
  • MAX7311AUG+ --: 16-bit I2C port expander with interrupt and reset, comparable I/O expansion role and pin-count, suitable as a functional substitute.
  • TCA9548APWR --: I2C switch/multiplexer with similar bus expansion function and widely available as a functional alternative.
  • PCA9548APW --: Same vendor I2C switch family with comparable I2C bus switching capability and similar package options.
  • PI4MSD5V9548AZLEX --: Pin-compatible I2C switch alternative from a different series, suitable for bus multiplexing applications.

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