Key facts
- Brand
- Texas Instruments
- Model
- TUSB2046B
- Industry
- Industrial
- Documents
- 3
- Languages
- EN
- Last added
- 2012-05-03
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TEXAS INSTRUMENTS TUSB2046B TUSB2046BIhandbook
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.
Texas Instruments TUSB2046B specifications
| 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 |
All Texas Instruments TUSB2046B documents by type
Ratings, dimensions and ordering codes, for selection and design work.
How to use the product for one specific task, with worked examples.
Questions answered in these manuals
Does the TUSB2046B require firmware programming?
No, the hub is implemented with a digital state machine and needs no firmware programming.
How many downstream ports does the TUSB2046B provide?
The device provides four downstream ports.
What power source modes does the TUSB2046B support?
It supports two power source modes: self‑powered and bus‑powered.
From: Texas Instruments TUSB2046B, TUSB2046BI 4-Port USB Hub Datasheet
How many downstream ports are provided by the hub?
The hub provides four downstream ports.
From: Texas Instruments TUSB2046B, TUSB2046BI 4-Port USB Hub Datasheet
How can false low‑speed detection be resolved?
Perform a CLEAR_PORT_FEATURE(PORT_ENABLE) followed by a RESET_PORT after DP and DM are stable.
From: TEXAS INSTRUMENTS Errata SLLZ051 October 2006 TUSB2046B Errata Manual