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Product Detailed Parameters
- Description：DARLINGTON OUTPUT OPTOCOUPLER
- Series：*
- Mfr：Texas Instruments
- Package：Bulk
- Number of Channels：-
- Voltage - Isolation：-
- Current Transfer Ratio (Min)：-
- Current Transfer Ratio (Max)：-
- Turn On / Turn Off Time (Typ)：-
- Rise / Fall Time (Typ)：-
- Input Type：-
- Output Type：-
- Voltage - Output (Max)：-
- Current - Output / Channel：-
- Voltage - Forward (Vf) (Typ)：-
- Current - DC Forward (If) (Max)：-
- Vce Saturation (Max)：-
- Operating Temperature：-
- Mounting Type：-
- Package / Case：-
- Supplier Device Package：-
- Grade：-
- Qualification：-
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Overview
The TIL919 is a quad-channel optocoupler manufactured by Texas Instruments. It integrates four independent channels, each comprising a gallium-arsenide light-emitting diode and a silicon n-p-n Darlington phototransistor. This configuration provides electrical isolation between input and output circuits while allowing signal transmission. The device is designed for applications requiring multiple isolated channels within a compact footprint.
Feature Summary
- Quad-channel architecture with integrated LED and Darlington phototransistor per channel
- Electrical isolation capability for signal transmission between separate circuits
- Gallium-arsenide LED source combined with silicon NPN phototransistor output
Applications
- Legacy system replacement where multi-channel isolation is required
- Industrial control systems needing signal isolation
- General-purpose digital signal isolation interfaces
Procurement Notes
Verify that the output voltage rating and current gain meet specific application requirements when replacing legacy components. Confirm pinout compatibility and package dimensions against existing board layouts to ensure proper integration without redesign.
Selection Notes
Select this component when multiple isolated channels are needed in a single package. Ensure the Darlington output characteristics align with the load requirements of the destination circuit. Consider thermal management and isolation voltage ratings relative to the operating environment.
Part Context
The TIL919 belongs to a family of quad-channel optocouplers from Texas Instruments, sharing structural similarities with models like TIL917 and TIL918 but differing in channel count. These devices utilize standard optoelectronic principles for galvanic isolation.
Replacement Considerations
The TIL919 can serve as a replacement in many legacy applications, but verification is essential. Confirm that the output voltage rating and current gain match the original design specifications before implementation.
