ISO6521DR

Overview

The ISO6521DR is a dual-channel digital isolator manufactured by Texas Instruments, featuring capacitive coupling technology for functional isolation. It supports unidirectional data transmission at a maximum data rate of 50 Mb/s with a propagation delay of 11 ns and pulse width distortion of 7 ns. The device operates within a supply voltage range of 1.71 V to 5.5 V and withstands an insulation voltage of 707 Vrms. It is housed in an SOIC-8 package and functions reliably across a temperature range of -40°C to +125°C.

Feature Summary

• Provides galvanic isolation between two channels using capacitive coupling technology
• Supports high-speed data transmission up to 50 Mbps with low propagation delay
• Compatible with 1.8V logic levels for versatile interface applications

Applications

• Industrial automation systems requiring signal isolation
• Measurement and sensing equipment interfaces
• Power management circuits needing galvanic separation

Procurement Notes

Verify the specific suffix 'D' corresponds to the SOIC-8 package configuration when sourcing. Confirm that the component meets RoHS compliance requirements for your region. Ensure that the operating temperature range aligns with your system's environmental specifications. Check for any specific handling instructions related to moisture sensitivity levels before assembly.

Selection Notes

Select this component when a compact solution for dual-channel isolation is required. Consider its 50 Mbps speed capability for moderate data rates. Evaluate the 707 Vrms insulation rating against your system's safety standards. The wide operating temperature range makes it suitable for harsh industrial environments.

Part Context

The ISO6521DR belongs to the ISO652x family of general-purpose dual-channel functional isolators from Texas Instruments. This series is designed to replace optical couplers in many applications, offering smaller size and lower power consumption. The DR variant specifically denotes the SOIC-8 surface-mount package option.

Replacement Considerations

Direct substitutes may include other models within the ISO652x family or similar dual-channel isolators from Texas Instruments. Verify pin compatibility and electrical parameters such as data rate and insulation voltage before substitution.