TUSB2077APTG4

Controllers Overview

The TUSB2077APTG4 is a USB 2.0 compliant hub controller manufactured by Texas Instruments, designed to expand a single upstream host connection into seven downstream ports. It supports Full Speed (12 Mb/s) and Low Speed (1.5 Mb/s) data rates. The device operates on a single 3.3 V power supply with a maximum operating voltage of 3.6 V and draws approximately 40 mA of working current. It is housed in a 48-lead LQFP package suitable for surface mount technology. The component functions within an ambient temperature range of 0°C to +70°C and includes an optional interface for serial EEPROM configuration.

Controllers Feature Summary

• Provides seven downstream USB ports for connecting multiple peripherals to a single host controller.
• Integrates an optional serial EEPROM interface to store hub configuration data and descriptors.
• Supports self-powered operation modes with independent power control for downstream ports.

Controllers Applications

• Desktop computer peripheral expansion systems
• Industrial control panels requiring multiple USB connections
• Embedded systems integrating various USB-enabled sensors or storage devices

Controllers Procurement Notes

Verify the specific suffix 'G4' indicates lead-free compliance and RoHS adherence as per Texas Instruments standards. Confirm the package type matches the required PCB footprint, specifically the LQFP-48 variant. Ensure the operating temperature range meets the environmental requirements of the target application. Check for moisture sensitivity levels if reflow soldering is planned. Validate that the supplier provides genuine components from authorized distribution channels.

Controllers Selection Notes

Select this component when a design requires expanding a USB host connection to seven devices without external switching logic. Consider the 3.3 V supply constraint and ensure adequate power delivery for self-powered applications. Evaluate the need for EEPROM integration to customize vendor and product identifiers. Compare against lower-port-count alternatives like the TUSB2046B if fewer ports suffice. Assess thermal management capabilities given the LQFP-48 package constraints.

Controllers Part Context

The TUSB2077A series belongs to Texas Instruments' family of USB 2.0 hub controllers. It serves as a higher-density alternative to the four-port TUSB2046B, offering expanded connectivity for complex USB topologies. The device simplifies system design by integrating hub functionality and configuration storage interfaces into a single integrated circuit solution.

Controllers Replacement Considerations

The TUSB2077APTRG4 is a reel-packaged equivalent of the TUSB2077APTG4. Direct substitutes include other 7-port USB hubs from different manufacturers, though pin compatibility and electrical characteristics must be verified. Lower port count options like the TUSB2046B require significant schematic redesign.