ISO7821LLSDWW

Overview

The ISO7821LLSDWW is a high-performance, dual-channel digital isolator from Texas Instruments, designed for isolated LVDS signaling. It features capacitive coupling technology with an insulation voltage of 5700 Vrms and supports data rates up to 150 Mbps. The device operates within a supply voltage range of 3 V to 5.5 V and offers a propagation delay of 17 ns. It provides bidirectional or unidirectional channel configurations in a 16-pin SOIC package, functioning reliably across a temperature range of -55°C to +125°C.

Feature Summary

• Provides reinforced isolation for dual LVDS signals using capacitive coupling technology
• Supports high-speed data transmission with rates up to 150 Mbps
• Enables flexible signal routing through configurable bidirectional or unidirectional channel polarities

Applications

• Isolated LVDS communication interfaces
• High-speed data acquisition systems requiring galvanic isolation
• Industrial equipment with differential signaling requirements

Procurement Notes

Verify the specific suffix 'DWW' confirms the 16-SOIC package and tube packaging format. Ensure the design accounts for the 3 V to 5.5 V supply range and the -55°C to +125°C operating temperature limits. Confirm that the 5700 Vrms insulation rating meets the system's safety isolation requirements.

Selection Notes

Select this component when dual-channel LVDS isolation is required with high data throughput. Consider the 17 ns propagation delay and 150 Mbps speed for timing-sensitive applications. Evaluate the 16-SOIC footprint against available PCB space and thermal management needs for the specified power dissipation.

Part Context

This part belongs to the ISO7821LLS series of high-performance isolated buffers. It is engineered specifically for DC-balanced data transmission over long distances in noisy environments. The series emphasizes low jitter and high common-mode transient immunity for reliable digital isolation.

Replacement Considerations

Check for ISO7821 variants with different suffixes indicating alternative packages or tape-and-reel options. Verify compatibility with existing LVDS drivers and receivers before substituting.