ISO7730DW

Overview

The ISO7730DW is a high-speed, robust-EMC reinforced triple-channel digital isolator manufactured by Texas Instruments. It features capacitive coupling technology within a 16-SOIC package. Key electrical parameters include a data rate of 100 Mbps, an isolation voltage of 5000 Vrms, and a common-mode transient immunity (CMTI) of 85 kV/µs. The device operates with a supply voltage range of 2.25 V to 5.5 V and supports unidirectional signal transmission across three forward channels with zero reverse channels. Propagation delay is typically 11 ns, with rise and fall times around 1.3 ns and 1.4 ns respectively. It functions reliably within a temperature range of -55°C to 125°C.

Feature Summary

• Provides reinforced insulation capabilities for safety-critical applications
• Delivers high common-mode transient immunity to ensure signal integrity in noisy environments
• Integrates three independent unidirectional channels in a compact surface-mount package

Applications

• Automotive electronic control units requiring robust electromagnetic compatibility
• Industrial communication interfaces such as CAN and LIN bus systems
• Power conversion circuits involving isolated gate driving or feedback loops

Procurement Notes

Verify the specific suffix against official datasheets to confirm package type and tape/reel specifications. Ensure the component meets required automotive or industrial qualification standards if applicable. Cross-reference the manufacturer part number with authorized distributors to avoid counterfeit products. Confirm lead times and availability directly with the supplier prior to ordering.

Selection Notes

Select this component when high-speed data transmission up to 100 Mbps is required alongside strong EMC performance. The 5000 Vrms isolation rating suits applications demanding reinforced safety barriers. Consider the 16-SOIC footprint for PCB layout constraints. Evaluate power consumption and propagation delay requirements against system timing budgets before finalizing the design choice.

Part Context

This device belongs to the ISO773x family of triple-channel digital isolators from Texas Instruments. It complements other variants like the ISO7730DWR and ISO7730QDWRQ1, differing primarily in packaging format and automotive qualification status. The series is designed to replace traditional transformer and optocoupler solutions in modern interface designs.

Replacement Considerations

The ISO7730DWR serves as a direct functional equivalent with reel packaging. For automotive-grade requirements, the ISO7730QDWRQ1 is the qualified alternative. Verify pinout compatibility and thermal characteristics when substituting these parts.