ISO7820LLDWW

Overview

The ISO7820LLDWW is a dual-channel, high-performance reinforced isolated LVDS buffer 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 Mbps. The device features unidirectional signal transmission with two forward channels and zero reverse channels. It provides an insulation voltage of 5700 Vrms and exhibits a typical propagation delay of 17 ns. The component is housed in a 16-pin SOIC (DWW) package and functions reliably across an operating temperature range of -55°C to +125°C.

Feature Summary

• Provides reinforced isolation for LVDS signals using capacitive coupling technology
• Supports high-speed data transmission at rates up to 100 Mbps
• Features low propagation delay for precise timing applications
• Operates over an extended industrial temperature range

Applications

• Industrial communication systems requiring galvanic isolation
• Medical equipment with strict safety isolation standards
• Power metering and energy monitoring interfaces
• Automotive infotainment and sensor networks

Procurement Notes

Verify the specific suffix 'DWW' confirms the SOIC-16 surface-mount package variant. Confirm that the 'LL' designation indicates the reinforced isolation rating required for your safety standards. Ensure compatibility with 3.3V or 5V logic levels on both sides of the isolator. Check for RoHS compliance status if environmental regulations apply to your manufacturing process.

Selection Notes

Select this component when bidirectional communication is not required, as it offers only unidirectional channels. Compare against the ISO7821 series if reverse channel capability is needed. Consider the ISO7820DW variant if tube packaging is preferred over tape and reel. Evaluate power consumption requirements, as the quiescent current impacts thermal management in dense PCB layouts.

Part Context

This part belongs to the ISO78xx family of digital isolators from Texas Instruments. It is specifically designed for LVDS applications, distinguishing it from standard CMOS isolators like the ISO7741. The device complements other members such as the ISO7821 (dual-channel, 1/1 configuration) and ISO7830 (triple-channel). It serves as a critical interface between noisy high-voltage domains and sensitive low-voltage control circuitry.

Replacement Considerations

The ISO7820LLDWR is the reel-pack equivalent of this tube-packaged component. For pin-compatible alternatives with different channel configurations, consider the ISO7821LLDWW or ISO7830DWW families.