ISO7240CDWRG4

Overview

The ISO7240CDWRG4 is a general-purpose digital isolator from Texas Instruments, featuring four independent channels with unidirectional signal transmission. It utilizes capacitive coupling technology to provide electrical isolation between circuits. The device operates within a supply voltage range of 3.15 V to 5.5 V and supports data rates up to 25 Mbps. It offers an insulation voltage rating of 2500 Vrms and a common-mode transient immunity of 25 kV/µs. The component is housed in a 16-pin SOIC package and functions across a temperature range of -40°C to 125°C.

Feature Summary

• Provides galvanic isolation using high-performance capacitive coupling technology for reliable signal transmission.
• Features four independent unidirectional channels designed for general-purpose digital isolation applications.
• Ensures robust noise immunity with high common-mode transient rejection capabilities.

Applications

• General-purpose digital isolation in industrial automation systems
• Isolation interfaces for microcontrollers and communication buses
• Signal isolation in medical equipment and instrumentation

Procurement Notes

Verify the specific suffix 'G4' indicates RoHS compliance and manufacturing origin details as per Texas Instruments documentation. Confirm the package variant matches the required SOIC-16 footprint dimensions. Check current lifecycle status, as availability may vary by region or production phase. Ensure compatibility with existing PCB layout constraints regarding the 7.50 mm width specification.

Selection Notes

Select this component when four-channel unidirectional isolation is required with a 25 Mbps data rate capability. It is suitable for designs needing 2500 Vrms isolation strength without integrated power supplies. Consider the 16-SOIC package size for space-constrained surface-mount applications. Evaluate thermal performance requirements against the specified operating temperature range of -40°C to 125°C.

Part Context

This part belongs to the ISO7240C series of digital isolators manufactured by Texas Instruments. It is part of the broader interface IC category focusing on circuit isolation techniques. The device complements other members of the ISO723x/ISO724x family, offering standardized pinouts and performance characteristics for scalable isolation design solutions.

Replacement Considerations

The ISO7240CDWR is a non-RoHS compliant predecessor that shares identical functional specifications and pinout configuration. Designers transitioning from older versions should verify packaging and environmental compliance requirements before substitution.