ISOUSB111DWXR

Signal Buffers, Repeaters, Splitters Overview

The ISOUSB111DWXR 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 utilizes a silicon dioxide insulation barrier rated for up to 5000 VRMS isolation voltage and 1500 VRMS working voltage. The device operates within an ambient temperature range of -40°C to +125°C and accepts VBUS input voltages between 4.25V and 5.5V, generating an internal 3.3V supply. It features automatic speed detection, role reversal for OTG/Type-C applications, and high common-mode transient immunity of 100 kV/µs.

Signal Buffers, Repeaters, Splitters Feature Summary

• Galvanic isolation using a silicon dioxide barrier for robust noise immunity
• Automatic connection and speed detection with support for L1 sleep and L2 suspend states
• Automatic role reversal capability enabling USB On-The-Go and Type-C Dual Role Port implementations
• Compliance with CISPR32 Class B emissions limits for low electromagnetic interference

Signal Buffers, Repeaters, Splitters Applications

• USB hub, host, peripheral, and cable isolation
• Medical equipment requiring reinforced safety isolation
• Factory automation systems
• Motor drives and grid infrastructure protection

Signal Buffers, Repeaters, Splitters Procurement Notes

Verify the specific ordering suffix 'X' confirms the reel packaging format required for automated assembly processes. Confirm that the component meets all relevant safety certifications, including UL 1577 and IEC standards, for the intended application environment. Ensure the design accommodates the SSOP-16 package dimensions and thermal requirements specified in the datasheet.

Signal Buffers, Repeaters, Splitters Selection Notes

Select this component when USB 2.0 full-speed or low-speed isolation is required with reinforced safety ratings. The device supports automatic role reversal, making it suitable for dual-role port designs. Verify that the system power supply falls within the 4.25V to 5.5V range to utilize the internal LDO, or provide an external 3.3V source if operating outside this range.

Signal Buffers, Repeaters, Splitters Part Context

This part belongs to the ISOUSB111 family of isolated USB repeaters manufactured by Texas Instruments. It is designed to replace traditional optocoupler-based solutions, offering higher performance and smaller footprint. The DWXR designation indicates the SSOP-16 package variant supplied in a tape and reel configuration for surface-mount technology.

Signal Buffers, Repeaters, Splitters Replacement Considerations

ISOUSB111DWR: Identical functional specifications but supplied in a SOIC-16 package instead of SSOP-16.