PCA9691T/1,518 Overview
The PCA9691T/1,518 is a versatile I2C-bus controlled GPIO expander designed to enhance communication in embedded systems. With its ability to interface seamlessly with various microcontrollers, it provides a reliable solution for applications requiring additional input/output capabilities. This device is ideal for engineers seeking to optimize their designs for performance and efficiency. For more details, visit IC Manufacturer.
PCA9691T/1,518 Key Features
- 16 GPIO pins provide flexibility for connecting multiple devices, reducing the need for additional components.
- I2C interface facilitates easy integration with existing systems, enabling efficient communication and reducing design complexity.
- Low power consumption ensures longer battery life in portable applications, making it an energy-efficient choice for developers.
- Configurable pull-up resistors enhance signal integrity and adaptability to various circuit conditions.
PCA9691T/1,518 Technical Specifications
| Parameter | Value |
|---|---|
| Supply Voltage | 2.3V to 5.5V |
| GPIO Configuration | 16-bit |
| I2C Bus Speed | 100 kHz / 400 kHz |
| Input Voltage Levels | 0V to Vcc |
| Output Current per Pin | 20 mA |
| Operating Temperature Range | -40??C to 85??C |
| Package Type | QFN |
| Maximum I2C Address | 127 |
PCA9691T/1,518 Advantages vs Typical Alternatives
This device stands out against typical alternatives due to its robust I2C interface, which delivers superior communication reliability. The integration of 16 GPIO pins allows for extensive connectivity, reducing overall design complexity while maintaining efficiency and power management advantages. These features collectively enhance performance in demanding applications.
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Typical Applications
- This GPIO expander is ideal for use in automated industrial equipment, where multiple I/O connections are needed to manage various sensors and actuators efficiently, enabling streamlined operations and improved control.
- It can be used in consumer electronics to expand device capabilities, allowing for additional controls and features to be implemented without extensive redesign.
- The PCA9691T/1,518 is suitable for smart home devices, providing flexible input/output options for various sensors and controls, enhancing user interaction and automation.
- It is also applicable in medical devices, where reliable GPIO management is crucial for operating multiple sensors and ensuring accurate readings.
PCA9691T/1,518 Brand Info
The PCA9691T/1,518 is a product from a renowned manufacturer in the semiconductor industry, specializing in innovative solutions for electronic applications. This device exemplifies the brand’s commitment to quality and reliability, making it an excellent choice for engineers looking for effective and efficient I/O expansion options in their designs.
FAQ
What is the maximum number of devices that can share the I2C bus with PCA9691T/1,518?
The PCA9691T/1,518 can support a maximum of 127 devices on the I2C bus, allowing for extensive system scalability and versatility in various applications.
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Is the PCA9691T/1,518 suitable for battery-powered applications?
Yes, the low power consumption of this device makes it highly suitable for battery-powered applications, enabling longer operation times without sacrificing performance.
Can the GPIO pins be configured as inputs or outputs?
Yes, the GPIO pins of the PCA9691T/1,518 can be configured as either inputs or outputs, providing flexibility for various application needs and enhancing overall functionality.
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What is the operating temperature range of the PCA9691T/1,518?
This device operates within a temperature range of -40??C to 85??C, making it suitable for use in challenging environments and ensuring reliable performance across diverse applications.
How is the PCA9691T/1,518 integrated into existing systems?
Integration is straightforward, as the PCA9691T/1,518 uses the I2C interface, allowing easy communication with microcontrollers and other devices, simplifying system design and reducing time to market.




