ISO7342FCDWR

Overview

The ISO7342FCDWR is a low-power, quad-channel digital isolator from Texas Instruments, housed in a 16-pin SOIC (DW) package. It provides galvanic isolation with a rating of 3000 Vrms and supports data rates up to 25 Mbps. The device features a 2/2 channel configuration with unidirectional signal flow and default output low logic. It operates on a supply voltage range of 3 V to 5.5 V, drawing a typical operating current of 6.4 mA. Key electrical specifications include a propagation delay of 31 ns and a common-mode transient immunity of 25 kV/µs. The component is designed for industrial applications, functioning within a temperature range of -40°C to +125°C.

Feature Summary

• Provides robust galvanic isolation between circuits using high-speed digital technology.
• Features a quad-channel architecture with a 2-input, 2-output configuration for efficient signal routing.
• Delivers high common-mode transient immunity to maintain signal integrity in noisy environments.
• Operates reliably across an extended industrial temperature range without requiring shutdown functionality.

Applications

• Industrial automation systems requiring isolated communication interfaces
• Medical equipment needing safe patient isolation barriers
• Power metering applications involving high-voltage sensing
• Inverter drives and motor control circuits

Procurement Notes

Verify the specific suffix 'FCDWR' to confirm the SOIC-16 package, reel packaging format, and lead-free RoHS compliance status. Ensure the procurement order matches the exact part number to avoid confusion with non-reel or different package variants within the ISO7342 family. Cross-reference the manufacturer's latest datasheet for any updates regarding moisture sensitivity levels and recommended soldering profiles before integration into the supply chain.

Selection Notes

Select this component when a low-power solution is required for isolating multiple digital signals simultaneously. The 25 Mbps data rate suits moderate-speed communication protocols, while the 3000 Vrms isolation rating ensures safety in standard industrial environments. Consider the 16-pin SOIC footprint for PCB layout constraints and verify that the 3 V to 5.5 V supply range aligns with the system's power architecture.

Part Context

This device belongs to the ISO7342FC series of digital isolators manufactured by Texas Instruments. It is categorized under interface ICs and serves as a general-purpose isolation solution. The product utilizes silicon dioxide (SiO2) insulation technology to achieve high reliability and performance. It is distinct from other isolator types by its specific combination of low power consumption and high-speed data transmission capabilities in a compact surface-mount package.

Replacement Considerations

Check for direct substitutes within the ISO7342 family, such as ISO7342CDWR, ensuring pin compatibility and identical electrical characteristics. Verify that alternative parts meet the same 3000 Vrms isolation and 25 Mbps speed requirements. Confirm package dimensions match the existing SOIC-16 footprint to prevent mechanical interference during replacement.

FAQ

What is the common-mode transient immunity (CMTI) of the ISO7342FCDWR?

The ISO7342FCDWR has a common-mode transient immunity of 25 kV/µs, which helps maintain signal integrity in high-noise environments.

Does the ISO7342FCDWR include a shutdown feature?

No, the ISO7342FCDWR does not include a shutdown feature; it operates continuously once powered within its specified voltage range.

What is the maximum operating temperature for this isolator?

The maximum operating temperature for the ISO7342FCDWR is +125°C, making it suitable for harsh industrial conditions.