HCPL-0661#500

Logic Output Optoisolators Overview

The HCPL-0661#500 is a high-speed, dual-channel logic output optocoupler manufactured by Broadcom Limited. It features an AlGaAs LED coupled to a high-speed integrated photodetector logic gate. The device provides electrical isolation with a typical data rate of 10 MBd and an insulation voltage of 3750 Vrms. It utilizes an open-collector, Schottky-clamped output structure supporting wired-OR functionality. Key electrical parameters include a maximum forward current of 15 mA, a supply voltage range of 4.5V to 5.5V, and a maximum collector current of 50 mA per channel. Typical rise and fall times are 24 ns and 10 ns, respectively, with a minimum common-mode transient immunity of 15 kV/µs.

Logic Output Optoisolators Feature Summary

• High common-mode transient immunity (CMTI) of 15 kV/µs for noise rejection
• Open-collector output with Schottky clamping enables wired-OR logic configuration
• TTL-compatible logic output interface for direct digital signal processing
• Integrated shielding minimizes capacitive coupling between input and output

Logic Output Optoisolators Applications

• Computer peripheral interfaces requiring high-speed data isolation
• Data acquisition systems needing galvanic isolation
• Power supply control circuits for feedback loop isolation
• Ground loop elimination in industrial communication networks

Logic Output Optoisolators Procurement Notes

Verify the specific suffix '#500' against the manufacturer's official ordering guide to confirm packaging type and reel specifications. Ensure compliance with RoHS directives as indicated by the 'E' suffix in related part numbers. Cross-reference the datasheet revision date to confirm current electrical characteristics and mechanical dimensions before finalizing procurement orders.

Logic Output Optoisolators Selection Notes

Select this component when high-speed digital isolation is required alongside robust noise immunity. The open-collector output necessitates an external pull-up resistor; ensure the resistor value aligns with the desired switching speed and load requirements. Verify that the operating temperature range of -40°C to +85°C meets the environmental constraints of the target application.

Logic Output Optoisolators Part Context

This device belongs to the HCPL-0661 series of high-speed optocouplers originally developed by Fairchild Semiconductor and later acquired by Avago Technologies, now Broadcom. The series is designed for applications demanding fast propagation delays and high CMTI. It serves as a logical alternative to standard logic gate optocouplers where speed and noise immunity are critical performance factors.

Logic Output Optoisolators Replacement Considerations

HCPL-0661-500E

Logic Output Optoisolators FAQ

What is the maximum forward current rating?

The maximum DC forward current is specified as 15 mA.

Does the output support wired-OR operation?

Yes, the open-collector output structure allows multiple outputs to be connected together for wired-OR logic functions.