ISO7320CDR

Overview

The ISO7320CDR is a dual-channel digital isolator from Texas Instruments, housed in an SOIC-8 package. It provides unidirectional signal isolation with a data rate of 25 Mb/s and a common-mode transient immunity of 25 kV/µs. The device operates on a supply voltage range of 3 V to 5.5 V, drawing a typical operating current of 4.9 mA per channel. It features a propagation delay of 32 ns and supports an insulation voltage of 3000 Vrms. The component functions within a temperature range of -40°C to +125°C.

Feature Summary

• Provides robust electromagnetic compatibility performance suitable for noisy industrial environments
• Integrates input noise filters to enhance signal integrity during high-frequency operation
• Offers certified electrical isolation ratings compliant with UL and VDE standards

Applications

• Industrial automation systems requiring galvanic isolation
• Medical equipment needing reliable signal separation
• Power metering applications involving high-voltage interfaces

Procurement Notes

Verify the specific suffix 'CDR' corresponds to the SOIC-8 tape-and-reel packaging configuration. Confirm that the C variant meets the required thermal and electrical specifications for your target application environment. Ensure compliance with RoHS directives if applicable to your manufacturing region. Cross-reference the manufacturer part number against official datasheets to avoid substitution errors.

Selection Notes

Select this component when unidirectional isolation is sufficient for the circuit design. The low power consumption makes it suitable for battery-operated or thermally constrained devices. Consider the 25 Mb/s data rate limit when designing for higher speed communication protocols. The wide operating temperature range supports deployment in harsh industrial conditions without additional cooling.

Part Context

This device belongs to the ISO732x family of robust EMC, low-power, dual-channel digital isolators. The family utilizes capacitive coupling technology to transmit digital signals across isolation barriers. These components are designed to replace traditional magnetic couplers while offering superior reliability and smaller form factors for modern interface circuits.

Replacement Considerations

The ISO7320FCDR serves as a functional substitute within the same series, sharing identical pinouts and core electrical characteristics. Verify that any replacement maintains the required insulation voltage and transient immunity ratings for safety compliance.