OPI1266

Overview

The OPI1266 is a high-speed optoisolator featuring a GaAlAs LED with an 890 nm peak wavelength coupled to a Schottky-clamped open collector output. It supports data rates up to 500 kbps and provides 16,000 VDC isolation voltage. The device operates with a forward current of 50 mA and delivers an output current of 15 mA per channel. Key timing parameters include an 800 ns turn-on delay time. It is designed for applications requiring high voltage isolation and reliable signal transmission in demanding environments.

Feature Summary

• High voltage isolation capability rated at 16,000 VDC
• Schottky clamping integrated into the output stage
• Utilizes a GaAlAs LED source for efficient coupling
• Open collector logic output configuration

Applications

• Industrial control systems requiring galvanic isolation
• High-voltage interface circuits
• Signal transmission in electrically noisy environments

Procurement Notes

Verify the specific datasheet revision and screening level requirements against your application's reliability standards. Confirm package pinout compatibility during integration. Ensure input drive currents do not exceed the specified maximum ratings to maintain device longevity and performance stability under operational conditions.

Selection Notes

Select this component when high voltage isolation combined with moderate speed is required. The Schottky clamp reduces storage time, improving switching performance compared to standard transistor outputs. Consider the 16 kV isolation rating for safety-critical interfaces where standard isolators may be insufficient for transient protection.

Part Context

Part of the TT Electronics/Optek Technology high-reliability optoelectronics portfolio. Designed for industrial, aerospace, and defense applications. Supports MIL-spec screening options including Group A, B, C, and D testing per MIL-PRF-19500 and MIL-STD-750 standards for enhanced quality assurance.

Replacement Considerations

Check pinout compatibility before substituting. Verify that alternative devices meet the 16,000 VDC isolation requirement and similar data rate specifications. Ensure the replacement supports Schottky-clamped outputs if fast switching is critical to the circuit design.