I2C-Bus/SMBus I/O Expander

Manufacturer

Part #

Description

The Texas Instruments TCAL9539R/TCAL9539R-Q1 I2C-Bus/SMBus I/O Expander provides general-purpose output (I/O) and parallel input expansion for the two-line bidirectional SMBus or I2C bus protocol, designed for 1.08V to 3.6V VCC operation. It supports multiple I2C clock frequencies and includes features like programmable pull-up/down resistors and interrupt status registers. This device is ideal for applications requiring additional I/Os for sensors, switches, and LEDs.

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Texas Instruments TCAL9539R/TCAL9539R-Q1 I2C-Bus/SMBus I/O Expander

Introduction

The Texas Instruments TCAL9539R/TCAL9539R-Q1 is a versatile I/O expander designed to enhance the capabilities of devices using the I2C or SMBus protocols. With its ability to operate within a voltage range of 1.08V to 3.6V, this component is ideal for applications requiring additional input/output options.

Part Description

The TCAL9539R/TCAL9539R-Q1 I/O expander provides general-purpose output and parallel input expansion, making it a valuable addition to systems that need to manage multiple sensors, switches, and LEDs. It supports various I2C clock frequencies, including 100kHz, 400kHz, and 1MHz, ensuring compatibility with a wide range of devices. Key features include programmable pull-up/down resistors, interrupt status registers, and the ability to retain the last configured state during resets, enhancing its usability in complex applications.

TCAL9539R/TCAL9539R-Q1

Applications

Sensors
Switches
Push-buttons
LEDs
Fans
Automotive applications

Industries

Consumer Electronics
Automotive
Industrial Automation
Telecommunications
Gaming

Usage Ideas

Smart Home Automation: Use the TCAL9539R to expand the number of sensors and switches in a smart home system, allowing for more control points and enhanced functionality.
LED Control Panel: Create a custom LED control panel for a gaming console, utilizing the I/O expander to manage multiple LED indicators and buttons.
Automotive Dashboard Interface: Implement the TCAL9539R in an automotive dashboard to manage various input and output devices, such as buttons for controlling lights and indicators.

Conclusion

The Texas Instruments TCAL9539R/TCAL9539R-Q1 I2C-Bus/SMBus I/O Expander is a powerful and flexible solution for applications requiring additional I/O capabilities. Its wide operating voltage range, support for multiple I2C clock frequencies, and advanced features make it suitable for a variety of industries and applications. Whether in consumer electronics, automotive, or industrial automation, this I/O expander can significantly enhance device functionality and performance.