PCA9535HFManufacturer: NXP 16-bit I2C-bus and SMBus, low power I/O port with interrupt | |||
| Partnumber | Manufacturer | Quantity | Availability |
|---|---|---|---|
| PCA9535HF | NXP | 12447 | In Stock |
Description and Introduction
16-bit I2C-bus and SMBus, low power I/O port with interrupt The **PCA9535HF** 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 for microcontrollers, enabling efficient control of multiple peripherals with minimal GPIO pin usage.  
Featuring two programmable I²C-bus addresses, the PCA9535HF supports bidirectional data transfer, allowing each of its 16 I/O ports to be independently configured as an input or output. With an operating voltage range of **2.3V to 5.5V**, it is compatible with a wide variety of logic levels, making it suitable for mixed-voltage systems.   Key features include **interrupt output** for efficient event-driven designs, reducing the need for continuous polling. The device also incorporates internal pull-up resistors, simplifying PCB design by minimizing external components. Its robust ESD protection ensures reliability in industrial and consumer applications.   Ideal for applications such as LED control, sensor interfacing, and keypad management, the PCA9535HF offers a compact, cost-effective solution for expanding I/O capabilities while maintaining low power consumption. Its compatibility with standard I²C protocols ensures seamless integration into existing designs. |
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Application Scenarios & Design Considerations
16-bit I2C-bus and SMBus, low power I/O port with interrupt
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