HCPL-2631#500

Logic Output Optoisolators Overview

The HCPL-2631#500 is a high-speed optocoupler featuring two independent channels in an 8-SMD, gull-wing package. It integrates a GaAsP LED with a Schottky-clamped open-collector photodetector IC. Key electrical parameters include a data rate of 10 MBd, isolation voltage of 3750 Vrms, and common mode transient immunity of 10 kV/µs. Typical propagation delays are 100 ns for both rise and fall times, with typical transition times of 24 ns (rise) and 10 ns (fall). The device operates on a 4.5V to 5.5V supply, supports a maximum forward current of 15 mA, and functions within a temperature range of -40°C to 85°C.

Logic Output Optoisolators Feature Summary

• Integrates a GaAsP light emitting diode with an integrated high gain photo detector for optical coupling.
• Features Schottky clamping on the output transistor to minimize storage time and enhance switching speed.
• Provides LVTTL and LVCMOS logic compatibility for reliable system performance.
• Delivers high common mode transient immunity to maintain signal integrity in noisy environments.

Logic Output Optoisolators Applications

• High-speed digital communication interfaces requiring galvanic isolation
• Isolation of microprocessor buses and control signals
• Single-ended and differential line driver applications
• Industrial automation systems with noise-sensitive components

Logic Output Optoisolators Procurement Notes

Verify the specific suffix matches the required package configuration, as the #500 designation indicates surface mount packaging. Confirm that the manufacturer documentation explicitly lists this part number as active and available for production use. Ensure compliance with RoHS3 standards if environmental regulations apply to the assembly process. Cross-reference the datasheet revision to confirm pinout and electrical characteristics remain consistent with design requirements.

Logic Output Optoisolators Selection Notes

Select this component when high-speed data transmission up to 10 MBd is required alongside robust electrical isolation. The Schottky-clamped output architecture makes it suitable for applications demanding fast turn-off times and reduced signal distortion. Consider the 3750 Vrms isolation rating for safety-critical circuits. The surface mount package facilitates automated assembly in compact PCB designs where space constraints limit through-hole options.

Logic Output Optoisolators Part Context

This device belongs to the HCPL-2631 series of high-speed optocouplers manufactured by Broadcom Limited. The series combines LED emitters with integrated photodetector ICs to provide superior performance compared to discrete phototransistor designs. The HCPL-2631 family is engineered for applications requiring fast response times and high reliability in electrically noisy environments, serving as a bridge between low-voltage logic circuits and higher voltage isolated sections.

Logic Output Optoisolators Replacement Considerations

HCPL-2631-020E

Logic Output Optoisolators FAQ

What is the purpose of the Schottky clamp in the output stage?

The Schottky clamp reduces the storage time of the output transistor, which significantly improves the fall time and overall switching speed of the optocoupler.

Does this component support LVCMOS logic levels?

Yes, the integrated detector IC provides output compatibility with LVTTL and LVCMOS logic families, ensuring reliable interfacing with modern digital systems.