ISO7521CDW

Overview

The ISO7521CDW is a low-power, dual-channel digital isolator manufactured by Texas Instruments. It utilizes capacitive coupling technology to provide electrical isolation with a rated insulation voltage of 5000 Vrms. The device supports data rates up to 1 Mb/s and features a maximum propagation delay of 9 ns. It operates within a supply voltage range of 3.15 V to 5.25 V and consumes approximately 2 mA of quiescent current per channel. The component is housed in a 16-pin SOIC (DW) package and is designed for operation across an ambient temperature range of -40°C to +105°C.

Feature Summary

• Capacitive coupling technology provides high common-mode transient immunity
• Low-power consumption suitable for energy-efficient designs
• Wide operating temperature range for industrial environments

Applications

• Industrial process control systems
• Medical equipment requiring galvanic isolation
• Power metering applications

Procurement Notes

Verify the specific suffix 'DW' confirms the SOIC-16 package and tube packaging format. Ensure the order matches the unidirectional channel configuration. Confirm RoHS compliance status as indicated in official documentation before procurement.

Selection Notes

Select this component when a dual-channel isolator with 5 kVrms rating and 1 Mbps speed is required. Consider the 16-pin SOIC footprint for PCB layout constraints. Evaluate power budget against the 2 mA per channel specification.

Part Context

This part belongs to the ISO7521C series of digital isolators from Texas Instruments. It is part of the broader interface IC category, specifically designed for general-purpose signal isolation tasks where low power and moderate speed are prioritized over higher data throughput options.

Replacement Considerations

Check for ISO7521CDWR if tape-and-reel packaging is preferred instead of tubes. Verify pinout compatibility with existing designs when considering alternative manufacturers.