This document describes the features and characteristics of the RHB PACKAGE (TOP VIEW) VF PACKAGE (TOP VIEW) TUSB2046B TUSB2046BI products, including compliance with the USB specification, low power ASIC logic, integrated USB transceivers, support for one upstream port and four downstream ports, support for full-speed and low-speed operations, support for suspend and resume operations, support for programmable vendor ID and product ID, etc.
The TUSB2046B is a 3.3‑V CMOS USB 4‑port hub that offers one upstream and four downstream ports. It is fully USB‑compliant, requires no firmware programming, and includes integrated transceivers and optional EEPROM interface.
The device supports both bus‑powered and self‑powered operation, offers selectable 6‑MHz crystal or 48‑MHz clock sources, and provides configurable power‑switching and over‑current protection per‑port or ganged. Detailed electrical characteristics, absolute maximum ratings, and mechanical data are included.
| Supply voltage range | 0.5 V – 3.6 V |
|---|---|
| Number of ports | 1 upstream, 4 downstream |
| Package options | 0.8‑mm LQFP or 0.5‑mm QFN |
| Clock source options | 6 MHz crystal or 48 MHz input |
| Power modes | Bus‑powered and self‑powered |
No, the hub is implemented with a digital state machine and needs no firmware programming.
The device provides four downstream ports.
It supports both bus‑powered and self‑powered operation.
The hub can use a 6‑MHz crystal or a 48‑MHz external clock input.