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PCA9535CHF from NXP,NXP Semiconductors

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PCA9535CHF

Manufacturer: NXP

16-bit I2C-bus and SMBus, low power I/O port with interrupt

Partnumber Manufacturer Quantity Availability
PCA9535CHF NXP 50 In Stock

Description and Introduction

16-bit I2C-bus and SMBus, low power I/O port with interrupt The **PCA9535CHF** from NXP Semiconductors is a versatile 16-bit I²C-bus and SMBus I/O expander designed to enhance system flexibility in embedded applications. This low-voltage CMOS device provides general-purpose remote I/O expansion, enabling microcontrollers to efficiently manage multiple digital inputs and outputs via a two-wire serial interface.  

Featuring an operating voltage range of **2.3V to 5.5V**, the PCA9535CHF is compatible with a wide variety of logic levels, making it suitable for mixed-voltage systems. Each of its 16 I/O pins can be independently configured as an input or output, with internal pull-up resistors simplifying circuit design. The device also includes interrupt output functionality, reducing the need for continuous polling and improving system efficiency.  

With its **400kHz I²C-bus interface**, the PCA9535CHF ensures fast communication while maintaining low power consumption. Its robust ESD protection and noise-filtered inputs enhance reliability in industrial and consumer applications. Available in a compact **TSSOP-24** package, this I/O expander is ideal for space-constrained designs requiring scalable I/O capabilities.  

Engineers value the PCA9535CHF for its ease of integration, configurable features, and dependable performance in applications such as LED control, keypad interfacing, and system monitoring. Its combination of flexibility and efficiency makes it a preferred choice for modern embedded systems.

Application Scenarios & Design Considerations

16-bit I2C-bus and SMBus, low power I/O port with interrupt

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