ISO7240CFDW

Overview

The ISO7240CFDW is a high-speed quad-channel digital isolator manufactured by Texas Instruments. It features four independent channels with unidirectional signal transmission, supporting data rates up to 150 Mbps. The device provides an isolation voltage of 2500 Vrms and operates within a supply voltage range of 3.15 V to 5.5 V. Key electrical parameters include a maximum propagation delay of 42 ns, a typical rise/fall time of 2 ns, and a pulse width distortion of 2.5 ns. It functions reliably across an operating temperature range of -40°C to +125°C and is housed in a 16-pin SOIC package.

Feature Summary

• Provides galvanic isolation between circuits using capacitive coupling technology for noise immunity.
• Supports high-speed data transmission with a maximum rate of 150 Mbps per channel.
• Features unidirectional signal flow across four independent channels for simplified interface design.

Applications

• Industrial communication interfaces requiring signal isolation
• Medical equipment signal processing circuits
• Power electronics control systems

Procurement Notes

Verify the specific suffix 'CFD' against the official datasheet to confirm the exact insulation rating and thermal grade. Ensure the 16-SOIC package dimensions match the PCB footprint requirements. Confirm that the 3.15V to 5.5V supply range aligns with the target system voltage levels before finalizing procurement.

Selection Notes

Select this component when high-speed data integrity is critical alongside moderate isolation requirements. The 150 Mbps speed suits applications needing faster throughput than standard isolators but where higher-cost options are unnecessary. Verify that the 2500 Vrms isolation level meets the safety standards of the specific application environment.

Part Context

This part belongs to the ISO7240 family of quad-channel digital isolators from Texas Instruments. It shares the same 16-pin SOIC footprint and basic functionality as variants like the ISO7240CDW but offers enhanced performance characteristics. The family is designed for general-purpose isolation in industrial and commercial environments.

Replacement Considerations

Check for ISO7240CDW or ISO7240ADWG4 if lower speed requirements allow. Verify pin compatibility and isolation ratings before substituting with other TI isolator families.

FAQ

What is the maximum data rate supported by the ISO7240CFDW?

The ISO7240CFDW supports a maximum data rate of 150 Mbps.

Does the ISO7240CFDW support bidirectional communication?

No, the ISO7240CFDW features unidirectional signal transmission only.