PCA9538DBRManufacturer: 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. |
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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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