VO0661T

Overview

The VO0661T is a dual-channel high-speed optocoupler from Vishay, designed for data rates up to 10 MBd. It features an open-drain output configuration and provides 4000 Vrms isolation voltage with a common-mode transient immunity of 15 kV/µs. The device operates within a supply voltage range of 4.5V to 5.5V and supports a maximum forward current of 15 mA. Packaged in an 8-SOIC surface-mount format, it ensures reliable signal transmission across isolated boundaries.

Feature Summary

• Dual-channel architecture supporting simultaneous signal isolation
• High-speed data transmission capability up to 10 MBd
• Integrated open-drain output stage for logic interfacing
• Robust common-mode transient immunity for noisy environments

Applications

• Industrial communication bus isolation
• Data acquisition system channel separation
• Microcontroller interface protection
• Power supply feedback loop isolation

Procurement Notes

Verify the specific suffix 'T' confirms the SOIC-8 tape-and-reel packaging variant. Confirm RoHS3 compliance status matches current regulatory requirements. Ensure the supplier source aligns with Vishay Semiconductor Opto Division authorized distribution channels to guarantee component authenticity and traceability.

Selection Notes

Select this component when dual-channel isolation is required alongside high-speed digital signaling. The open-drain output necessitates external pull-up resistors tailored to the target logic voltage level. Verify that the 4000 Vrms isolation rating sufficiently exceeds the application's working voltage requirements.

Part Context

This part belongs to the VO06xxT family of high-speed optocouplers. It serves as a surface-mount alternative to through-hole DIP variants like the VO4661. The family utilizes efficient LED technology coupled with integrated photodetectors to achieve high bandwidth in compact packages suitable for dense PCB layouts.

Replacement Considerations

The HCPL0661 is a documented substitute option. Note that the HCPL0661 offers 3750 Vrms isolation compared to the VO0661T's 4000 Vrms. Verify pinout compatibility and ensure the lower isolation rating meets the specific circuit safety requirements before substitution.