ISO7821LLDWW

Overview

The ISO7821LLDWW is a high-performance, dual-channel digital isolator manufactured by Texas Instruments. It features reinforced isolation capabilities with an insulation voltage of 5700 Vrms and a surge rating of 8000 Vpk. The device supports data rates up to 100 Mbps with a propagation delay of 17 ns. It operates on a supply voltage range of 2.25 V to 5.5 V and consumes 9.5 mA of quiescent current. Packaged in a 16-pin SOIC (DWW) format, it functions within a temperature range of -55°C to +125°C.

Feature Summary

• Provides reinforced isolation for LVDS signals using capacitive coupling technology
• Supports bidirectional and unidirectional signal transmission without shutdown control
• Complies with TIA/EIA-644-A LVDS standards for DC-balanced data optimization

Applications

• Isolated LVDS buffer interfaces in industrial communication systems
• High-speed data transfer across galvanic isolation barriers
• Signal conditioning in noisy electrical environments requiring reinforced safety

Procurement Notes

Verify the specific suffix DWW corresponds to the SOIC-16 package configuration before ordering. Confirm that the required insulation voltage ratings meet system safety standards. Ensure the operating temperature range aligns with environmental conditions. Check RoHS compliance status if restricted substances are prohibited in the application. Validate pinout compatibility with existing PCB layouts.

Selection Notes

Choose this component when reinforced isolation is mandatory for LVDS applications. It is suitable for designs requiring high common-mode transient immunity. Select this part over standard isolators if higher surge voltage tolerance is needed. Consider the 16-pin package size for space-constrained boards. Evaluate power consumption against battery-operated constraints.

Part Context

This device belongs to the ISO7821LL series of isolated LVDS buffers. It is designed to replace discrete isolation solutions in high-speed digital interfaces. The family offers enhanced reliability compared to optical isolators. It integrates dual channels into a single compact package. The series targets applications demanding precise timing and low jitter.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.