The PCA9544ADGVR is a high-performance, low-voltage 4-channel I²C-bus switch with interrupt logic, designed and manufactured by Texas Instruments. This integrated circuit (IC) provides the capability to interface multiple I²C devices that have the same address, thereby solving address-conflict issues and expanding I²C bus capabilities in a system.

Key Features

• Channel Selection: The device has four bidirectional translating switches that can be controlled via the I²C bus, allowing connection of up to four separate I²C sub-buses to a main I²C bus.
• Voltage Range: It operates at a supply voltage range of 2.3V to 5.5V, making it suitable for a variety of low-voltage applications.
• Interrupt Function: Each switch has an interrupt input associated with it, which can be monitored via the interrupt output of the PCA9544ADGVR, providing additional flexibility and control.
• Active-Low Reset: An active-low reset input allows the IC to be reset remotely if required.
• Packaging: The device comes in a compact TSSOP-16 (DGVR) package, which is ideal for space-constrained applications.

Applications

The versatility of the PCA9544ADGVR makes it an ideal choice for a wide range of applications including, but not limited to, servers, telecommunication systems, and consumer electronics where multiple I²C devices are used. It is particularly useful in applications where PCB space is limited and multiple I²C devices with the same address need to be connected to a single I²C bus.

Technical Specifications

• Manufacturer: Texas Instruments
• Part Number: PCA9544ADGVR
• Channels: 4-channel
• Supply Voltage: 2.3V to 5.5V
• Package: TSSOP-16
• Operating Temperature: -40°C to +85°C

Overall, the PCA9544ADGVR from Texas Instruments is a robust and reliable solution for complex I²C-bus configurations, offering enhanced functionality and ease of use for designers and engineers.