HCPL-0661-000E

Logic Output Optoisolators Overview

The HCPL-0661-000E is a high-speed, dual-channel logic output optocoupler manufactured by Broadcom Limited. It integrates an AlGaAs or GaAsP LED with a high-gain integrated photodetector and Schottky-clamped open-collector outputs. The device supports data rates up to 10 MBd and provides an isolation voltage of 3750 Vrms. Key electrical parameters include a typical rise time of 24 ns, fall time of 10 ns, and maximum propagation delay of 100 ns. It operates on a supply voltage range of 4.5V to 5.5V, with a maximum collector current of 50 mA per channel. The component functions within a temperature range of -40°C to +85°C and is housed in an 8-pin SOIC package.

Logic Output Optoisolators Feature Summary

• High common-mode transient immunity (CMTI) of 15 kV/µs due to internal shielding structure
• Schottky-clamped open-collector outputs supporting wired-OR functionality
• Logic gate configuration combining LED and integrated photodetector for fast signal transmission

Logic Output Optoisolators Applications

• Computer peripheral interfaces requiring high-speed data isolation
• Data isolation and conversion in industrial communication systems
• Switching power supply feedback loops for ground loop elimination

Logic Output Optoisolators Procurement Notes

Verify the specific suffix code against the manufacturer's official datasheet to confirm pinout compatibility and insulation ratings. Ensure the procurement source provides valid UL, CSA, and VDE certification documents corresponding to the 3750 Vrms isolation rating. Confirm that the delivered components match the HCPL-0661-000E designation to avoid substitution errors with similar series parts lacking Schottky clamping.

Logic Output Optoisolators Selection Notes

Select this component when circuit design requires high-speed digital isolation exceeding standard transistor-output optocouplers. The 10 MBd data rate and low propagation delay make it suitable for serial communication protocols. The open-collector output allows flexible interfacing with various logic families, while the wide operating temperature range ensures reliability in harsh environments.

Logic Output Optoisolators Part Context

This part belongs to the HCPL series of high-speed optocouplers originally developed by Fairchild Semiconductor and later acquired by Avago Technologies, now Broadcom. The series includes variants like HCPL-0600 and HCPL-0611. The HCPL-0661 specifically features Schottky-clamped outputs for improved switching speed and noise immunity compared to earlier generations in the family.

Logic Output Optoisolators Replacement Considerations

HCPL-0661-500E

Logic Output Optoisolators FAQ

What is the maximum common-mode transient immunity of the HCPL-0661-000E?

The device offers a minimum common-mode transient immunity (CMTI) of 15 kV/µs, achieved through its internal shielding structure.

Can multiple HCPL-0661-000E outputs be connected together?

Yes, the open-collector, Schottky-clamped output design supports wired-OR functionality, allowing multiple outputs to be connected to a common line.