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PCA9508D from NXP,NXP Semiconductors

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PCA9508D

Manufacturer: NXP

Hot swappable level translating I2C-bus repeater

Partnumber Manufacturer Quantity Availability
PCA9508D NXP 60 In Stock

Description and Introduction

Hot swappable level translating I2C-bus repeater The **PCA9508D** from NXP Semiconductors is a versatile **8-bit I²C-bus and SMBus I/O expander** designed to enhance system flexibility by providing additional GPIO ports through a serial interface. This CMOS-based device is particularly useful in applications requiring multiple digital inputs or outputs while minimizing microcontroller pin usage.  

Featuring **interrupt output capability**, the PCA9508D can alert the host controller of input state changes, reducing the need for continuous polling. It supports **voltage-level translation** between 1.8V, 2.5V, 3.3V, and 5V buses, making it suitable for mixed-voltage systems. The device operates with a **400 kHz I²C-bus interface**, ensuring efficient communication in embedded designs.  

Key features include **individually configurable I/O ports**, allowing each pin to function as an input or output, and **low standby current consumption**, which is beneficial for power-sensitive applications. The PCA9508D is available in a **SO20 package**, offering a compact footprint for space-constrained designs.  

Common applications include **industrial control systems, consumer electronics, and networking equipment**, where expanding I/O capabilities without increasing microcontroller complexity is essential. With its robust performance and integration flexibility, the PCA9508D serves as a reliable solution for modern digital systems.

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