ISOUSB111DWR

Signal Buffers, Repeaters, Splitters Overview

The ISOUSB111DWR is a galvanically isolated USB repeater compliant with the USB 2.0 standard, supporting low-speed (1.5 Mbps) and full-speed (12 Mbps) signaling rates. It operates within a VBUS voltage range of 4.25V to 5.5V and features an internal 3.3V LDO. The device utilizes a silicon dioxide insulation barrier providing up to 5000VRMS isolation for one minute and withstands surge voltages of 12800VPK. It supports automatic speed detection, connection reflection, and link power management states including L1 sleep and L2 suspend. Designed for reinforced isolation, it meets CISPR32 Class B emissions limits and operates across an ambient temperature range from -40°C to +125°C.

Signal Buffers, Repeaters, Splitters Feature Summary

• Supports automatic role reversal for USB On-The-Go and Type-C Dual Role Port implementations
• High common-mode transient immunity of 100kV/µs
• Includes safety-related certifications such as UL 1577 and IEC 60601-1

Signal Buffers, Repeaters, Splitters Applications

• USB hub, host, peripheral, and cable isolation
• Medical equipment
• Factory automation systems
• Motor drives
• Grid infrastructure

Signal Buffers, Repeaters, Splitters Procurement Notes

Verify the specific package variant during procurement, as the DWR suffix denotes the SOIC-16 package. Confirm that the design requires reinforced isolation ratings suitable for safety-critical applications. Ensure the selected component matches the required safety certifications for the target market, such as UL or VDE standards. Check documentation for any planned certification updates regarding the SSOP package option if applicable.

Signal Buffers, Repeaters, Splitters Selection Notes

Select this component when designing circuits requiring electrical isolation between USB hosts and peripherals while maintaining USB 2.0 compliance. It is suitable for applications needing high common-mode transient immunity and support for OTG or DRP protocols. Consider the thermal resistance characteristics when determining heat dissipation requirements in enclosed environments. Verify that the available supply voltages align with the device's input specifications and internal LDO capabilities.

Signal Buffers, Repeaters, Splitters Part Context

The ISOUSB111 belongs to Texas Instruments' family of isolated USB repeaters designed for robust signal transmission across galvanic barriers. This series addresses the need for noise immunity and safety compliance in industrial and medical settings. The device integrates essential USB protocol handling functions directly into the isolator, simplifying system architecture by reducing the component count required for complete isolation solutions.

Signal Buffers, Repeaters, Splitters Replacement Considerations

ISOUSB211DPR