HCPL-7611

Logic Output Optoisolators Overview

The HCPL-7611 is a high-speed logic optocoupler featuring a GaAsP LED and an integrated photodetector IC with a Schottky-clamped open-collector output. It provides 3750Vrms isolation and supports data rates up to 10MBd. Key electrical parameters include a maximum propagation delay of 75ns, a common mode transient immunity of 10kV/μs, and an operating temperature range of -40°C to 85°C. The device operates on a 4.5V to 5.5V supply, accepts a forward current up to 20mA, and delivers a channel output current of 50mA.

Logic Output Optoisolators Feature Summary

• Integrates a GaAsP light-emitting diode with a high-gain photodetector IC for enhanced signal integrity.
• Features a Schottky-clamped open-collector transistor output designed for LVTTL and LVCMOS compatibility.
• Provides robust electrical isolation with a common mode transient immunity rating of 10kV/μs.

Logic Output Optoisolators Applications

• High-speed digital communication interfaces requiring galvanic isolation
• Industrial control systems with noisy electrical environments
• Microprocessor-based systems needing fast signal transmission across isolation barriers

Logic Output Optoisolators Procurement Notes

Verify the specific package variant, such as DIP8, against system mechanical constraints. Confirm that the open-collector output configuration aligns with the receiving circuit's pull-up requirements. Ensure the isolation voltage rating meets the safety standards applicable to the target application environment.

Logic Output Optoisolators Selection Notes

Select this component when high-speed data transmission exceeding standard optocoupler capabilities is required. The Schottky-clamped output design minimizes storage time, making it suitable for applications demanding low propagation delay. Consider the wide input current range if driving conditions vary significantly from standard TTL levels.

Logic Output Optoisolators Part Context

This device belongs to Broadcom's family of high-speed logic optocouplers. It serves as a lower input current alternative to models like the HCPL-2601 and 6N137. The series is engineered to provide reliable signal transfer between isolated circuits while maintaining compatibility with standard logic families.

Logic Output Optoisolators Replacement Considerations

The HCPL-7611 is documented as a low input current version of the HCPL-2601 and HCPL-11. Verify pinout compatibility and ensure the replacement maintains the required 10MBd data rate and 3750Vrms isolation specifications for the specific circuit design.

Logic Output Optoisolators FAQ

What is the maximum data rate supported by the HCPL-7611?

The HCPL-7611 supports a maximum data rate of 10MBd.

How does the output stage of the HCPL-7611 function?

The output consists of a Schottky-clamped open-collector transistor, which facilitates compatibility with LVTTL and LVCMOS logic levels.