Texas Instruments

TCA9544APWR  

Encoders, Decoders, Multiplexers & Demultiplexers

The TCA9544APWR is a low-cost, multi-master I2C bus switch designed by Texas Instruments. It is a versatile device that allows multiple I2C masters to communicate with multiple I2C slaves using a single I2C bus. The TCA9544APWR is a 4-port I2C bus switch, which means it can connect up to four I2C masters to up to four I2C slaves.

Description:

The TCA9544APWR is a highly integrated, low-power I2C bus switch that provides a simple and cost-effective solution for managing multiple I2C buses. It is available in a small 16-pin TSSOP package, making it suitable for space-constrained applications. The device is designed to operate with a wide range of I2C bus speeds, from standard mode (100 kbps) to fast mode (400 kbps).

Features:

1. 4-port I2C bus switch: Connects up to four I2C masters to up to four I2C slaves.
2. Supports standard mode (100 kbps) and fast mode (400 kbps) I2C bus speeds.
3. Compact 16-pin TSSOP package for space-constrained applications.
4. Low power consumption: 1.2 mA in operation and 0.1 µA in standby mode.
5. Automatic bus arbitration: Ensures that only one master can control the bus at a time, preventing data collisions.
6. General call address support: Allows a single message to be sent to all connected I2C devices.
7. Individual channel control: Each channel can be independently enabled or disabled.
8. Hierarchical addressing: Allows for easy expansion of the I2C bus system by cascading multiple TCA9544APWR devices.
9. SMBus compatible: Supports the SMBus protocol for system management and communication between devices.

Applications:

The TCA9544APWR is suitable for a wide range of applications where multiple I2C masters need to communicate with multiple I2C slaves. Some common applications include:

1. Industrial automation systems: Connecting multiple sensors, actuators, and controllers on a single I2C bus.
2. Consumer electronics: Managing multiple I2C devices in smartphones, tablets, and other portable devices.
3. Automotive systems: Connecting various electronic control units (ECUs) and sensors in modern vehicles.
4. Home automation systems: Interfacing multiple I2C-based devices for smart home applications.
5. IoT devices: Enabling communication between various sensors, actuators, and microcontrollers in Internet of Things (IoT) applications.

In summary, the TCA9544APWR is a versatile and cost-effective I2C bus switch that provides a reliable solution for managing multiple I2C buses in various applications. Its compact form factor, low power consumption, and support for standard and fast I2C bus speeds make it an ideal choice for space-constrained and power-sensitive applications.

TCA9544APWR Documents

Download datasheets and manufacturer documentation for TCA9544APWR

Datasheets :

TCA9544A      

HTML Datasheet :

TCA9544A      

PCN Design/Specification :

TCA9544A 03/Jul/2018       Mult PN PART MARKING 08/Dec/2023