18014215401L

Overview

The Würth Elektronik 18014215401L is a four-channel capacitive digital isolator from the WPME-CDIS series. It features a data rate of 150 Mbps and operates within a supply voltage range of 2.375 V to 5.5 V. The device provides 5 kVrms isolation voltage and exhibits a typical propagation delay of 12 ns. It utilizes a 16-pin WSOIC package with dimensions suitable for surface mount applications.

Feature Summary

• Provides capacitive isolation between primary and secondary circuit sides
• Supports bidirectional signal transmission with two forward and two reverse channels
• Features default low output logic state configuration
• Offers high common-mode transient immunity for noise-sensitive environments

Applications

• Industrial communication interfaces requiring galvanic isolation
• Medical equipment signal isolation
• Power supply control loop feedback
• Isolated gate driver circuits

Procurement Notes

Verify the specific suffix 'L' indicates the default low output configuration, as variants like 'H' exist with different logic states. Confirm the 16-pin WSOIC package compatibility with your PCB footprint. Ensure the operating temperature range of -40°C to +125°C meets your environmental requirements. Cross-reference the datasheet for precise pinout assignments before finalizing the design.

Selection Notes

Select this component when a four-channel isolated digital interface is required with moderate speed up to 150 Mbps. It is suitable for applications needing robust isolation without the complexity of magnetic coupling. Consider the 5 kVrms rating for safety compliance. Evaluate the 12 ns propagation delay against your system timing constraints to ensure signal integrity across the isolation barrier.

Part Context

This part belongs to the WPME-CDIS family of capacitive digital isolators manufactured by Würth Elektronik. These components are designed to replace traditional optocouplers in many applications, offering superior performance in terms of speed, power consumption, and reliability. The series supports various channel configurations and packaging options to fit diverse design needs.

Replacement Considerations

The 18014215401H is a direct functional substitute within the same series but features default high outputs instead of default low. Verify that the logic polarity difference does not impact the connected digital signals or require software inversion.