ISO7821LLSDWWR

Overview

The ISO7821LLSDWWR is a dual-channel digital isolator from the ISO7821LLS series, manufactured by Texas Instruments. It features a 1/1 channel configuration with bidirectional and unidirectional polarity support. The device operates at a data rate of 150 Mbps and provides an insulation voltage of 5700 Vrms using capacitive coupling technology. It functions within a supply voltage range of 2.25 V to 5.5 V, drawing a typical operating current of 9.5 mA. Key timing parameters include a propagation delay of 17 ns and rise/fall times of 1.38 ns. The component is housed in a 16-pin SOIC (DWW) package, supports a wide operating temperature range from -55°C to +125°C, and has zero pulse width distortion.

Feature Summary

• Provides reinforced isolation capabilities via capacitive coupling for high noise immunity
• Supports both bidirectional and unidirectional signal transmission configurations
• Delivers high-speed data transfer performance up to 150 Mbps
• Ensures signal integrity with zero pulse width distortion

Applications

• Industrial automation systems requiring galvanic isolation
• Medical equipment needing reinforced safety isolation
• Power metering applications with high-voltage separation needs
• Inverter drives and motor control circuits

Procurement Notes

Verify the specific suffix 'DWWR' confirms the SOIC-16 package and reel packaging format. Ensure the order matches the 150 Mbps speed grade distinct from the 100 Mbps variants. Confirm RoHS compliance status through official manufacturer documentation before procurement.

Selection Notes

Select this component when enhanced isolation voltage ratings are required compared to standard isolators. Consider the 150 Mbps data rate for higher bandwidth applications. Evaluate the 16-pin SOIC footprint against available PCB space constraints. Verify compatibility with system supply voltages between 2.25 V and 5.5 V.

Part Context

This part belongs to the ISO7821LLS family of high-performance digital isolators. It serves as a specialized variant offering 150 Mbps throughput, distinguishing it from the 100 Mbps ISO7821LLDWR counterpart. The device integrates into interface IC subcategories designed for robust signal transmission across isolation barriers.

Replacement Considerations

ISO7821LLDWR is a similar 100 Mbps variant in the same family but offers lower data rates. Direct substitution requires verifying if the reduced speed meets application requirements.