TUSB211ARWBR

Overview

The TUSB211ARWBR is a USB 2.0 high-speed signal conditioner designed to compensate for inter-symbol interference and channel loss in transmission paths. It supports data rates up to 480 Mbps while remaining transparent to low-speed and full-speed signaling. The device operates on a supply voltage ranging from 2.3 V to 6.5 V, with a typical active current of 22 mA at 5 V. It features four selectable equalization levels configured via an external pull-down resistor on the EQ pin. The component is housed in a 12-pin X2QFN package measuring 1.6 mm by 1.6 mm and is rated for an operating temperature range of 0°C to +70°C.

Feature Summary

• Compensates for AC and DC signal loss using edge boost and DC boost functions to improve eye width.
• Supports daisy-chaining of up to five devices to extend cable length or address high-loss applications.
• Maintains signal integrity without adding propagation delay or altering packet timing.
• Compatible with USB On-The-Go (OTG) and Battery Charging (BC) protocols.

Applications

• Laptop, desktop, and docking station USB ports
• Portable electronics and tablets
• Active cables and cable extenders

Procurement Notes

Verify the specific suffix 'RWBR' corresponds to the commercial temperature grade (0°C to +70°C) rather than the industrial grade (-40°C to +85°C). Confirm the package type is X2QFN-12 and check for RoHS compliance status. Ensure the ordering quantity matches the standard reel size of 3000 units if applicable.

Selection Notes

Select this component when system design requires compensation for high PCB trace loss or long cable lengths exceeding standard USB 2.0 limits. Choose the ARWBR variant specifically for commercial temperature environments. Evaluate the required equalization level based on pre-channel and post-channel cable losses before finalizing the external pull-down resistor value.

Part Context

This part belongs to the TUSB211A series of third-generation USB high-speed signal conditioners. It serves as a redriver to restore signal quality for USB 2.0 connections. The device is distinct from the TUSB211 due to its wider supply voltage range and enhanced equalization capabilities.

Replacement Considerations

The TUSB211AIRWBR is the industrial temperature version of this component. Other pin-compatible options within the family include TUSB212, TUSB214, TUSB216, and TUSB217A, though these operate strictly at 3.3 V.

FAQ

How is the signal equalization level configured?

The equalization level is set by connecting an external pull-down resistor to the EQ pin. Four levels are available: Level 0 (0 Ω), Level 1 (1.8 kΩ), Level 2 (3.6 kΩ), and Level 3 (open/no resistor).

Does the TUSB211ARWBR affect Low-Speed or Full-Speed signals?

No, the device uses a patented design that leaves Low-Speed and Full-Speed signal characteristics unaffected, providing transparency for these modes.

What is the maximum number of devices that can be daisy-chained?

Up to five TUSB211A devices can be daisy-chained to support high-loss applications or extended cable lengths.