Texas Instruments

TCA9554DWR  

I/O Expanders

TCA9554DWR Description

The TCA9554DWR is a high-performance I/O expander from Texas Instruments, designed to provide efficient and reliable expansion of I/O ports in various electronic systems. This device features an 8-bit I/O expander with an I2C interface, operating at a clock frequency of 400 kHz. It is housed in a surface-mount 16SOIC package, making it suitable for compact and space-efficient designs. The TCA9554DWR supports a wide supply voltage range of 1.65V to 5.5V, ensuring compatibility with a variety of power supply configurations.

TCA9554DWR Features

• I2C Interface: The TCA9554DWR utilizes a standard I2C interface, allowing for seamless integration with microcontrollers and other I2C-compatible devices.
• 8-bit I/O Expansion: This I/O expander provides 8 additional I/O lines, significantly increasing the number of peripherals that can be controlled or monitored by a microcontroller.
• Interrupt Output: The device features an interrupt output, enabling efficient handling of I/O status changes and reducing the need for continuous polling.
• Power-On Reset (POR): The TCA9554DWR includes a power-on reset feature, ensuring reliable initialization and stable operation upon power-up.
• Wide Supply Voltage Range: With a supply voltage range of 1.65V to 5.5V, the TCA9554DWR is highly versatile and can be used in a wide range of applications with varying power supply requirements.
• Surface-Mount Packaging: The 16SOIC package is ideal for surface-mount technology (SMT), facilitating automated assembly processes and compact board designs.
• Compliance and Standards: The TCA9554DWR is REACH unaffected and RoHS3 compliant, meeting environmental and safety standards for electronic components.

TCA9554DWR Applications

The TCA9554DWR is well-suited for a variety of applications where I/O expansion is required. Some specific use cases include:

• Embedded Systems: Ideal for expanding the I/O capabilities of microcontrollers in embedded systems, enabling control and monitoring of additional peripherals.
• Industrial Automation: Useful in industrial applications where multiple sensors and actuators need to be interfaced with a central controller.
• Consumer Electronics: Enhances the functionality of consumer devices by providing additional I/O ports for features such as button inputs, LED indicators, and sensor interfaces.
• Automotive Systems: Suitable for automotive applications where space is limited and reliable I/O expansion is necessary for various control and monitoring functions.

Conclusion of TCA9554DWR

The TCA9554DWR from Texas Instruments is a robust and versatile I/O expander that offers significant benefits for a wide range of applications. Its 8-bit I/O expansion, I2C interface, and wide supply voltage range make it an excellent choice for expanding the capabilities of microcontrollers and other control devices. The inclusion of an interrupt output and power-on reset feature further enhances its reliability and ease of use. With its surface-mount packaging and compliance with environmental standards, the TCA9554DWR is an ideal solution for modern electronic designs, providing efficient I/O expansion in a compact and reliable package.

TCA9554DWR Documents

Download datasheets and manufacturer documentation for TCA9554DWR

Datasheets :

TCA9554       I2C Infographic Flyer      

HTML Datasheet :

TCA9554       I2C Infographic Flyer      

PCN Design/Specification :

Design 25/Feb/2022       TCA954/4A DataSheet Update 1/Mar/2017