HCNW2611

Logic Output Optoisolators Overview

The HCNW2611 is a high-speed logic output optocoupler featuring an open collector, Schottky-clamped photodetector. It supports a data rate of 10MBd with typical propagation delays of 100ns and rise/fall times of 24ns/10ns. The device provides 5000Vrms isolation and a common-mode transient immunity of 15kV/µs. It operates within a supply voltage range of 4.5V to 5.5V, accepts a maximum DC forward current of 20mA, and delivers a 50mA output current. The component is housed in an 8-DIP package.

Logic Output Optoisolators Feature Summary

• Integrates a GaAsP LED with a high-gain integrated photodetector for digital signal transmission.
• Features Schottky clamping on the output stage to minimize storage time and enhance switching speed.
• Provides robust noise immunity through high common-mode transient rejection capabilities.

Logic Output Optoisolators Applications

• High-speed serial communication interfaces requiring galvanic isolation.
• Industrial control systems utilizing TTL-compatible logic levels.
• Data acquisition circuits necessitating fast signal transfer across isolation barriers.

Logic Output Optoisolators Procurement Notes

Verify the specific suffix (e.g., -000E) to confirm the package type, as variants exist in DIP and SMD formats. Confirm RoHS compliance status, as some versions may not meet current environmental standards. Ensure the selected variant matches the required isolation voltage and CMTI specifications for the target application environment.

Logic Output Optoisolators Selection Notes

Select this component when high-speed digital isolation is required alongside TTL compatibility. The Schottky-clamped output reduces delay variations compared to standard open-collector designs. Consider the 5000Vrms isolation rating for safety-critical applications. Verify thermal management requirements if operating near the upper temperature limits.

Logic Output Optoisolators Part Context

This part belongs to the HCNW series of high-speed optocouplers from Broadcom Limited. It is functionally related to the HCPL-2611 and 6N137 families but offers specific performance characteristics tailored for high-speed digital isolation. The series emphasizes fast response times and reliable signal integrity in noisy environments.

Logic Output Optoisolators Replacement Considerations

Direct substitutes include the HCNW2611-000E for DIP packaging or HCNW2611-500E for surface-mount applications. Cross-reference datasheets to ensure identical pinouts and electrical parameters before substitution.

Logic Output Optoisolators FAQ

What is the purpose of the Schottky clamp in the HCNW2611?

The Schottky clamp prevents transistor saturation during the ON state, significantly reducing storage time and improving the fall time of the output signal.

Is the HCNW2611 compatible with standard TTL logic levels?

Yes, the device is designed to be compatible with standard TTL logic inputs and outputs, facilitating easy integration into existing digital circuits.