TIL195B

Overview

The TIL195B is a high-density AC input phototransistor optically coupled isolator manufactured by Texas Instruments. It features an integrated anti-parallel LED, enabling direct connection to alternating current sources without external rectification components. The device utilizes a photovoltaic output configuration housed in an 8-pin DIP package. Designed for robust signal isolation, it operates within a standard industrial temperature range and supports applications requiring reliable electrical separation between control and load circuits.

Feature Summary

• Integrated anti-parallel LED structure allows direct AC input coupling
• Photovoltaic output design provides galvanic isolation
• High-density construction suitable for compact circuit layouts

Applications

• AC mains detection circuits
• Solid-state relay driver interfaces
• Industrial process control isolation

Procurement Notes

Verify the specific manufacturer designation on the component marking, as the TIL195B technology has been transferred to Isocom Components. Ensure the sourced parts match the original Texas Instruments specifications if legacy compatibility is required. Confirm package integrity and lead condition upon receipt to guarantee proper optical coupling performance.

Selection Notes

Select this component when direct AC drive capability is necessary to simplify circuit topology. The integrated anti-parallel LED eliminates the need for external diodes, reducing bill of materials count. Consider the photovoltaic output characteristics for applications requiring zero-bias signal transmission across the isolation barrier.

Part Context

The TIL195B belongs to a family of AC-input optocouplers that includes the TIL194B and TIL196B. These devices are engineered for applications where the input side must interface directly with alternating voltage signals. The series offers varying current transfer ratios and packaging options to suit different isolation voltage requirements and board space constraints.