ISO7220CDR

Overview

The ISO7220CDR is a dual-channel unidirectional digital isolator from Texas Instruments, utilizing capacitive coupling technology. It operates within a supply voltage range of 2.8 V to 5 V and supports data rates up to 25 Mbps. The device provides an insulation voltage of 2500 Vrms and offers a common-mode transient immunity (CMTI) of 25 kV/µs. Key electrical parameters include a propagation delay of 32 ns and low channel-to-channel output skew of 1 ns maximum. It functions reliably across an operating temperature range of -40°C to +125°C and is housed in an 8-pin SOIC package.

Feature Summary

• Provides galvanic isolation between circuits using robust capacitive coupling architecture.
• Supports high-speed data transmission with signaling rates up to 25 Mbps.
• Ensures signal integrity through minimal pulse-width distortion and low output skew.
• Features high common-mode transient immunity for reliable operation in noisy environments.

Applications

• General-purpose digital isolation in industrial automation systems
• Isolation barriers in measurement and sensing equipment
• Power management circuit interfaces requiring galvanic separation

Procurement Notes

Verify the specific suffix 'CDR' corresponds to the required tape-and-reel packaging configuration. Confirm that the 8-pin SOIC footprint matches the target PCB layout. Ensure the component meets RoHS compliance requirements for the intended market. Cross-reference the datasheet revision to validate all electrical specifications against current manufacturing standards before finalizing procurement orders.

Selection Notes

Select this component when a dual-channel unidirectional isolator is required for general-purpose applications. It is suitable for designs needing 2500 Vrms isolation with data rates up to 25 Mbps. Consider the 8-pin SOIC package constraints and the 2.8 V to 5 V supply voltage range. Evaluate the -40°C to +125°C operating temperature range against environmental conditions.

Part Context

The ISO7220CDR belongs to the ISO722x family of dual-channel digital isolators manufactured by Texas Instruments. This series utilizes advanced capacitive isolation technology to provide robust signal transmission across isolation barriers. The family includes variants with different speed options, such as 1, 5, and 150 Mbps, catering to diverse application bandwidth requirements while maintaining consistent pinout and package dimensions.

Replacement Considerations

Check for direct substitutes within the ISO722x family, such as ISO7220C or ISO7220D, ensuring identical pin configurations and electrical characteristics. Verify compatibility with existing board layouts and thermal management strategies when swapping components.