VOH263A

Overview

The VOH263A is a dual-channel high-speed optocoupler from Vishay Semiconductor Opto Division, housed in an 8-pin DIP package. It features a data rate of 10 MBd and offers 5000 Vrms isolation voltage with a common-mode transient immunity of 15 kV/µs. The device utilizes high-efficiency input LEDs coupled to integrated photo-detector logic gates, providing open-drain outputs. Key electrical parameters include a forward current of 20 mA, forward voltage of 1.38 V, and output current of 50 mA. Rise and fall times are specified at 11 ns each, with a power dissipation of 85 mW. Operating temperature ranges from -40°C to +110°C.

Feature Summary

• Dual-channel architecture integrating high-efficiency input LEDs with high-speed integrated photo-detector logic gates for signal transmission.
• High common-mode transient immunity rated at 15 kV/µs to ensure reliable operation in noisy environments.
• Open-drain output configuration compatible with standard logic families across specified supply voltage ranges.

Applications

• Digital signal isolation in industrial communication networks
• Gate drive circuits for power electronics requiring high-speed switching
• Microcontroller interface isolation for noise-sensitive applications

Procurement Notes

Verify the specific suffix code (e.g., X006, X336) against the required packaging format, as these indicate variations in tube or tape-and-reel configurations. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure the selected variant matches the desired lead-free specifications and environmental certifications required by the end application standards.

Selection Notes

Select this component when dual-channel isolation with 10 MBd speed is required within an 8-pin DIP footprint. Compare rise/fall time specifications if asymmetric switching is needed, as some variants may differ slightly. Verify that the 50 mA output current capability meets the load requirements of the receiving logic circuit without exceeding the 85 mW power dissipation limit under worst-case thermal conditions.

Part Context

This part belongs to Vishay's high-speed optocoupler family designed for robust digital isolation. It complements single-channel variants like the VOWH260A, offering doubled channel density in the same DIP-8 form factor. The series targets applications demanding fast data rates and high reliability in electrically noisy industrial settings.

Replacement Considerations

Direct pin-compatible substitutes within the same Vishay family include the VOH263A-X006 and VOH263A-X336, which share identical core electrical characteristics but may differ in packaging quantities or reel specifications. Cross-brand replacements require careful verification of CMTI ratings and propagation delay matching.