ISOW7742FDFMR

Overview

The ISOW7742FDFMR is a quad-channel digital isolator from Texas Instruments featuring galvanic isolation technology. It operates within a supply voltage range of 2.97 V to 5.5 V and supports data rates up to 100 Mb/s. The device provides an insulation voltage of 5000 Vrms with unidirectional signal transmission. Key electrical parameters include a propagation delay of 10.7 ns, maximum rise time of 3.6 ns, and fall time of 3.5 ns. Power consumption is specified at 5.4 mA or 16.7 mA depending on configuration, with a power dissipation of 1.48 W. It functions reliably between -40°C and +125°C in a SOIC-20 package.

Feature Summary

• Integrates four independent digital channels for high-density signal isolation
• Utilizes magnetic coupling technology for robust galvanic isolation
• Features low electromagnetic emissions and reduced ripple current
• Includes integrated power stage capabilities for simplified design

Applications

• Industrial automation systems requiring reinforced isolation
• Medical equipment needing reliable signal separation
• Power electronics monitoring circuits
• Data acquisition systems with high noise environments

Procurement Notes

Verify the specific suffix FDFMR confirms the SOIC-20 package and reel packaging format. Ensure the component meets RoHS compliance requirements for your region. Confirm that the moisture sensitivity level aligns with your assembly process timeline. Check for any specific quality certifications required by your industry standards before finalizing procurement.

Selection Notes

Select this model when reinforced isolation with integrated power is necessary. Compare channel count and isolation voltage against system requirements. Evaluate power consumption differences between variants if thermal management is critical. Ensure the SOIC-20 footprint fits your PCB layout constraints. Verify compatibility with existing control logic levels and signal speeds.

Part Context

This component belongs to the ISOW774x family of quad-channel digital isolators. It shares architectural similarities with other members like the ISOW7740 and ISOW7743 but differs in internal power integration and channel directionality. The series emphasizes low emissions and high reliability for demanding industrial applications.

Replacement Considerations

Direct substitutes include ISOW7740FDFMR and ISOW7743FDFMR. Verify pinout compatibility and specific channel direction requirements before swapping. Ensure replacement parts match the required insulation voltage and operating temperature range.