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PCA9538DBR from TI,Texas Instruments

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PCA9538DBR

Manufacturer: TI

Remote 8-Bit I2C and SMBus Low-Power I/O Expander With Interrupt Output, Reset, and Config Registers 16-SSOP -40 to 85

Partnumber Manufacturer Quantity Availability
PCA9538DBR TI 1800 In Stock

Description and Introduction

Remote 8-Bit I2C and SMBus Low-Power I/O Expander With Interrupt Output, Reset, and Config Registers 16-SSOP -40 to 85 The **PCA9538DBR** from Texas Instruments is a versatile **I²C-bus controlled 8-bit I/O expander**, designed to enhance system flexibility by providing additional GPIO ports for microcontrollers and processors. This low-power CMOS device features an **interrupt output**, allowing efficient monitoring of input state changes without continuous polling.  

With **bidirectional I/O pins**, the PCA9538DBR supports both input and output configurations, making it suitable for a wide range of applications, including industrial control, consumer electronics, and embedded systems. Each I/O can be independently programmed, offering granular control over peripheral interfacing.  

The device operates on a **1.65V to 5.5V supply voltage**, ensuring compatibility with various logic levels. Its **I²C interface** supports standard (100 kHz) and fast (400 kHz) modes, facilitating seamless integration into existing communication architectures. Additionally, the PCA9538DBR includes **internal pull-up resistors**, reducing external component count and simplifying PCB design.  

Housed in a compact **TSSOP-16 package**, this expander is ideal for space-constrained designs. Its robust ESD protection enhances reliability in harsh environments. Whether expanding I/O capabilities or reducing microcontroller pin usage, the PCA9538DBR delivers a reliable and efficient solution for modern electronic systems.

Application Scenarios & Design Considerations

Remote 8-Bit I2C and SMBus Low-Power I/O Expander With Interrupt Output, Reset, and Config Registers 16-SSOP -40 to 85

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