ISO7820DWR

Overview

The ISO7820DWR is a high-performance, dual-channel digital isolator manufactured by Texas Instruments. It operates within a supply voltage range of 2.25 V to 5.5 V and supports data rates up to 100 Mb/s. The device features an insulation voltage of 5700 Vrms and utilizes capacitive coupling for signal transmission. It is housed in a 16-pin SOIC package with a wide operating temperature range from -55°C to +125°C. The typical working supply current is 11.9 mA, with a propagation delay of 10.7 ns.

Feature Summary

• Provides reinforced dual-channel isolation using capacitive coupling technology
• Supports bidirectional level translation across the 2.25 V to 5.5 V supply range
• Ensures signal integrity with low propagation delay and pulse width distortion

Applications

• Industrial automation systems requiring galvanic isolation
• Medical equipment needing high-reliability signal separation
• Power metering applications involving isolated communication interfaces

Procurement Notes

Verify the specific suffix (e.g., DWR) against the manufacturer's official datasheet to confirm package type and tape-and-reel specifications. Ensure compliance with RoHS directives as indicated in the product documentation. Confirm that the intended application environment falls within the specified -55°C to +125°C operating temperature range to guarantee performance reliability.

Selection Notes

Select this component when dual-channel isolation is required with high insulation voltage ratings. It is suitable for designs needing unidirectional signal transmission at speeds up to 100 Mbps. Consider the 16-pin SOIC footprint for PCB layout constraints. Evaluate power consumption requirements against the 11.9 mA typical supply current to ensure compatibility with system power budgets.

Part Context

This part belongs to the ISO78xx family of digital isolators from Texas Instruments. It shares common interface characteristics with other members like the ISO7840 and ISO7831 but differs in channel count and directionality. The series is designed for robust noise immunity and high-speed data transfer in electrically noisy environments.

Replacement Considerations

Check for direct pin-compatible alternatives within the same family, such as variants with different channel configurations or directionality, if system requirements change. Verify that any substitute maintains the 5700 Vrms insulation rating and 100 Mbps data rate capabilities.