HCNW4506

Logic Output Optoisolators Overview

The Broadcom HCNW4506 is a single-channel logic output optoisolator featuring an AlGaAs LED and an open-collector photodetector with Schottky clamping. It provides 5000Vrms isolation voltage and supports a supply voltage range of 4.5V to 30V. The device operates within a temperature range of -40°C to 100°C, with a maximum DC forward current of 25mA and a typical forward voltage of 1.6V. Key electrical parameters include a maximum propagation delay of 550ns (tpLH) and 400ns (tpHL), a minimum common-mode transient immunity of 15kV/µs, and a maximum current transfer ratio of 90%. It is housed in an 8-DIP package.

Logic Output Optoisolators Feature Summary

• Integrates Schottky clamping on the output to prevent saturation and ensure fast switching performance.
• Provides high common-mode transient immunity for reliable operation in noisy environments.
• Features an AlGaAs LED input for consistent optical coupling characteristics.

Logic Output Optoisolators Applications

• Variable-speed drives
• Electric vehicle systems
• Induction cookers
• Solar inverters

Logic Output Optoisolators Procurement Notes

Verify the specific suffix (e.g., -300E, -500E) against the datasheet to confirm package type and compliance status. Confirm RoHS status as some variants may not be compliant. Ensure the supplier provides the official Broadcom datasheet for technical validation before integration.

Logic Output Optoisolators Selection Notes

Select this component when high-speed logic isolation with Schottky clamping is required. The 15kV/µs CMTI rating makes it suitable for applications with significant noise. Verify that the 15mA output current capability meets the load requirements of the connected circuitry.

Logic Output Optoisolators Part Context

The HCNW4506 belongs to the HCNW series of intelligent power module interface optocouplers. It is functionally related to the HCPL-4506 but utilizes an AlGaAs LED instead of GaAsP. This series is designed for robust isolation in power electronics and industrial control applications.

Logic Output Optoisolators Replacement Considerations

The HCPL-4506 is a direct functional equivalent within the same family, differing primarily in LED material (GaAsP vs. AlGaAs). Verify pinout compatibility and thermal characteristics when substituting.

Logic Output Optoisolators FAQ

What is the purpose of the Schottky clamp in the HCNW4506?

The Schottky clamp prevents the phototransistor from entering deep saturation, which significantly reduces storage time and improves switching speed.

What is the minimum common-mode transient immunity (CMTI) of this device?

The HCNW4506 has a minimum CMTI of 15kV/µs, ensuring reliable operation in high-noise environments.