ISO7842DWW

Overview

The ISO7842DWW is a high-performance, quad-channel digital isolator manufactured by Texas Instruments. It features reinforced isolation certifications with an 8000 VPK isolation voltage and 5700 Vrms insulation rating. The device supports data rates up to 100 Mb/s with a propagation delay of 11 ns. It operates on a supply voltage range of 2.25 V to 5.5 V and consumes 13.7 mA of operating current. The component utilizes capacitive coupling technology and is housed in a 16-pin SOIC package. It functions as a unidirectional isolator with two forward and two reverse channels, suitable for harsh environments within a temperature range of -55°C to +125°C.

Feature Summary

• Provides reinforced isolation certification for safety-critical applications
• Supports signaling rates up to 100 Mbps for high-speed data transmission
• Enables wide supply voltage translation from 2.25V to 5.5V

Applications

• Industrial automation systems requiring galvanic isolation
• Medical equipment needing reinforced electrical safety barriers
• Automotive electronics interfaces demanding high reliability

Procurement Notes

Verify the specific suffix DWW indicates tube packaging rather than tape and reel variants like DWWR. Confirm RoHS compliance status through official manufacturer documentation before procurement. Ensure the ordering part number matches the required isolation ratings and channel configuration exactly. Cross-reference the datasheet revision date to guarantee parameter accuracy for design integration.

Selection Notes

Select this component when reinforced isolation certification is mandatory for regulatory compliance. Choose the ISO7842DWW over standard isolators if higher breakdown voltage capabilities are required. Consider the 16-pin SOIC footprint for PCB layout constraints. Evaluate the 100 Mbps data rate against system timing requirements to ensure signal integrity is maintained across the isolation barrier.

Part Context

This device belongs to the ISO7842 family of quad-channel digital isolators from Texas Instruments. It shares architectural similarities with other members but offers specific reinforced isolation ratings. The DWW suffix denotes the tube packaging format, distinguishing it from the DWWR tape-and-reel variant. It serves as a robust interface solution for separating noisy digital grounds in complex electronic systems.

Replacement Considerations

Check for ISO7842DWWR if tape-and-reel packaging is preferred for automated assembly. Verify pinout compatibility with existing designs when substituting similar quad-channel isolators. Ensure replacement parts maintain the same 8000 VPK isolation rating for safety compliance.