HCPL-2231

Logic Output Optoisolators Overview

The HCPL-2231 is a dual-channel logic output optocoupler featuring an AlGaAs LED and detectors with totem pole output stages. It provides high-speed signal isolation with a data rate of 5 MBd and typical propagation delay of 150 ns. The device operates within a supply voltage range of 4.5 V to 20 V and supports input currents as low as 1.6 mA to 1.8 mA. It offers an isolation voltage of 3750 Vrms and maintains performance across an operating temperature range of -40°C to +85°C. Common packages include PDIP-8.

Logic Output Optoisolators Feature Summary

• Integrates AlGaAs LED with optical receivers featuring totem pole outputs for direct logic waveform generation without external pull-up resistors.
• Provides high common-mode transient immunity (CMTI) of 1 kV/µs for reliable operation in noisy environments.
• Features built-in hysteresis at the receiver input to enhance noise immunity and ensure clean digital signal transitions.

Logic Output Optoisolators Applications

• High-speed logic system isolation
• Microprocessor interface circuits
• Computer peripheral interfaces
• Ground loop elimination

Logic Output Optoisolators Procurement Notes

Verify the specific ordering suffix (e.g., 000E, 300, 500) to confirm package type, lead-free status, and reel/tube packaging configuration. Ensure the selected variant matches the required PCB footprint and manufacturing process specifications before finalizing procurement orders.

Logic Output Optoisolators Selection Notes

Select this component when dual-channel isolation with fast switching speeds is required. The totem pole output structure simplifies circuit design by eliminating the need for external pull-up resistors. Verify that the application voltage falls within the 4.5 V to 20 V range and that the thermal environment stays within the specified -40°C to +85°C limits.

Logic Output Optoisolators Part Context

The HCPL-2231 belongs to Broadcom's HCPL series of high-speed optocouplers. It is designed to replace pulse transformers and provide robust signal transmission between isolated circuits. The device is widely used in industrial and commercial applications requiring reliable digital communication across electrical barriers.

Logic Output Optoisolators Replacement Considerations

Direct pin-compatible replacements may include other dual-channel logic output optocouplers from the same manufacturer family, such as the HCPL-2232, provided the package and electrical characteristics align with the original design requirements.

Logic Output Optoisolators FAQ

Does the HCPL-2231 require external pull-up resistors?

No, the device features totem pole output stages that generate logic waveforms directly, eliminating the need for external pull-up resistors.

What is the maximum data rate supported by this optocoupler?

The HCPL-2231 supports a typical data rate of 5 MBd.