ISO7242ADW

Overview

The ISO7242ADW is a quad-channel digital isolator from Texas Instruments, housed in a 16-SOIC package. It features unidirectional signal paths with a 2/2 channel configuration and supports data rates up to 1 Mbps. The device provides 2500 Vrms isolation voltage using capacitive coupling technology. It operates on a supply voltage range of 3.15 V to 5.5 V, with typical operating currents of 6.5 mA and 13 mA for the respective sides. Propagation delay is specified at 110 ns. The component is rated for an operating temperature range of -40°C to 125°C.

Feature Summary

• Provides galvanic isolation between circuits using robust capacitive coupling technology.
• Features four independent channels configured as two inputs and two outputs.
• Supports high common-mode transient immunity for reliable operation in noisy environments.
• Designed for surface-mount assembly in standard 16-pin SOIC packages.

Applications

• Industrial automation systems requiring isolated communication interfaces
• Medical equipment needing reinforced isolation for patient safety
• Power electronics monitoring and control circuits
• Automotive electronic control units (ECUs) with isolated data lines

Procurement Notes

Verify current availability status as the ISO7242ADW may be subject to obsolescence notices or discontinuation by the manufacturer. Confirm that the 16-SOIC package dimensions match your PCB footprint requirements. Ensure that the 1 Mbps data rate meets your system's timing constraints. Check for any specific environmental certifications required for your application region. Validate that the 2500 Vrms isolation rating satisfies your safety standards compliance needs.

Selection Notes

Select this component when a quad-channel isolator with moderate speed is required. The 1 Mbps rate suits applications like UART, SPI, or I2C isolation where high bandwidth is unnecessary. Consider the 16-SOIC package if space allows for larger footprints. Evaluate the 2500 Vrms isolation against higher voltage requirements. Compare power consumption figures with other isolators if energy efficiency is critical.

Part Context

The ISO7242ADW belongs to the ISO724x family of digital isolators from Texas Instruments. This series offers various channel counts and data rates. The ADW suffix indicates the specific 16-SOIC package variant. Other family members include dual-channel and octal configurations. The family shares similar capacitive coupling technology and pinout compatibility within certain groups.

Replacement Considerations

Check for ISO7242ADWR as a tape-and-reel alternative from the same manufacturer. Verify cross-reference components with identical 1 Mbps speed and 16-SOIC packaging. Ensure substitute parts maintain the same 2500 Vrms isolation rating. Confirm that replacement devices support the same 3.15 V to 5.5 V supply range. Validate thermal performance matches the original -40°C to 125°C operating range.