USB2503-HZH

Controllers Overview

The USB2503-HZH is a Microchip Technology integrated USB 2.0 compatible 3-port hub controller housed in a 48-pin QFN package. It supports High-Speed (480 Mbits/s), Full-Speed (12 Mbits/s), and Low-Speed (1.5 Mbits/s) data rates with dedicated Transaction Translators for each downstream port. The device operates on a 1.8V core voltage with 3.3V I/O tolerant to 5V inputs. Configuration is achieved via an external I2C EEPROM, SMBus slave interface, or hardware strapping options. It features an internal 24MHz crystal driver, PLL, and 1.8V linear regulator.

Controllers Feature Summary

• Integrated USB 2.0 transceivers with three dedicated transaction translators for mixed-speed peripheral support
• Configurable power management allowing dynamic switching between bus-powered and self-powered modes
• Flexible configuration interfaces including I2C EEPROM, SMBus slave, and hardware strapping pins
• Built-in protection mechanisms including short circuit protection and over-current sensing capabilities

Controllers Applications

• Desktop computer expansion ports
• Peripheral connectivity hubs for consumer electronics
• Industrial control systems requiring USB connectivity
• Embedded host devices needing additional downstream ports

Controllers Procurement Notes

Verify the specific ordering suffix against the manufacturer's current product identification system to ensure correct package and temperature grade. Confirm that the component meets RoHS compliance requirements for your target market. Check for any available errata sheets related to silicon revisions before finalizing procurement specifications.

Controllers Selection Notes

Select this component when a compact 3-port solution with dedicated transaction translators is required. Ensure the design accommodates the 48-pin QFN thermal slug connection. Verify that the host system can support the SMBus or I2C configuration method if dynamic descriptor loading is needed rather than fixed hardware strapping.

Controllers Part Context

This part belongs to the USB2503/USB2503A series of integrated USB 2.0 hub controllers from Microchip Technology. It is designed as a complete solution for adding multiple USB peripherals to a host system. The series emphasizes low power consumption and flexible configuration options to suit various OEM design constraints.

Controllers Replacement Considerations

Consult official Microchip documentation for confirmed substitute part numbers within the same family or cross-compatible models. Do not assume functional equivalence with other manufacturers' hub controllers without verifying pinout and electrical parameter compatibility.